/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:34:00,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:34:00,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:34:00,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 02:34:00,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:34:00,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:34:00,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:34:00,744 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 02:34:00,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:34:00,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:34:00,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:34:00,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:34:00,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:34:00,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:34:00,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:34:00,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:34:00,781 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:34:00,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:34:00,781 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:34:00,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:34:00,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:34:00,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:34:00,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:34:00,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:34:00,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:34:00,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:34:00,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:34:00,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:34:00,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:34:00,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:34:00,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:34:00,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:34:00,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:34:00,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:34:00,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:34:00,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:34:00,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:34:00,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:34:00,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:34:00,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:34:00,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:34:00,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:34:00,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:34:00,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:34:01,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:34:01,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:34:01,002 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:34:01,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-01-18 02:34:01,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b527cbde/0b7c1c164b4b46a987628506b0ec47ff/FLAG886d8c40f [2022-01-18 02:34:01,432 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:34:01,433 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2022-01-18 02:34:01,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b527cbde/0b7c1c164b4b46a987628506b0ec47ff/FLAG886d8c40f [2022-01-18 02:34:01,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b527cbde/0b7c1c164b4b46a987628506b0ec47ff [2022-01-18 02:34:01,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:34:01,849 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:34:01,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:34:01,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:34:01,855 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:34:01,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:34:01" (1/1) ... [2022-01-18 02:34:01,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c1b8fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:01, skipping insertion in model container [2022-01-18 02:34:01,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:34:01" (1/1) ... [2022-01-18 02:34:01,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:34:01,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:34:02,025 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-01-18 02:34:02,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:34:02,033 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:34:02,046 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2022-01-18 02:34:02,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:34:02,057 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:34:02,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02 WrapperNode [2022-01-18 02:34:02,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:34:02,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:34:02,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:34:02,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:34:02,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,084 INFO L137 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-01-18 02:34:02,084 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:34:02,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:34:02,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:34:02,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:34:02,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,099 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:34:02,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:34:02,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:34:02,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:34:02,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (1/1) ... [2022-01-18 02:34:02,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:34:02,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:02,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 02:34:02,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 02:34:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:34:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:34:02,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:34:02,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:34:02,166 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:34:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:34:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:34:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:34:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:34:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:34:02,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:34:02,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:34:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:34:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:34:02,168 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:34:02,225 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:34:02,227 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:34:02,356 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:34:02,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:34:02,396 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 02:34:02,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:34:02 BoogieIcfgContainer [2022-01-18 02:34:02,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:34:02,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:34:02,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:34:02,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:34:02,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:34:01" (1/3) ... [2022-01-18 02:34:02,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e6e73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:34:02, skipping insertion in model container [2022-01-18 02:34:02,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:34:02" (2/3) ... [2022-01-18 02:34:02,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70e6e73a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:34:02, skipping insertion in model container [2022-01-18 02:34:02,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:34:02" (3/3) ... [2022-01-18 02:34:02,417 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2022-01-18 02:34:02,421 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:34:02,421 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:34:02,421 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:34:02,421 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:34:02,484 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,485 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,485 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,485 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,486 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,486 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,486 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,486 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,487 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,487 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,487 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,487 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,487 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,488 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,488 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,488 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,488 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,488 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,488 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,489 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,489 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,489 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,489 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,489 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,490 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,490 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,490 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,490 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,491 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,492 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,492 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,492 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,492 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,492 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,493 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,493 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,493 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,493 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,493 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,493 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,496 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,497 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,497 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,498 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,498 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:34:02,518 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 02:34:02,565 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:34:02,570 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 02:34:02,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 02:34:02,580 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 188 flow [2022-01-18 02:34:02,629 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:02,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 02:34:02,646 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:02,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:02,648 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:02,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:02,652 INFO L85 PathProgramCache]: Analyzing trace with hash 146847265, now seen corresponding path program 1 times [2022-01-18 02:34:02,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:02,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973216461] [2022-01-18 02:34:02,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:02,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:02,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:02,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973216461] [2022-01-18 02:34:02,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973216461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:34:02,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:34:02,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:34:02,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313885617] [2022-01-18 02:34:02,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:34:02,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:34:02,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:02,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:34:02,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:34:02,896 INFO L87 Difference]: Start difference. First operand has 332 states, 331 states have (on average 2.5770392749244713) internal successors, (853), 331 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:02,949 INFO L93 Difference]: Finished difference Result 332 states and 782 transitions. [2022-01-18 02:34:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:34:02,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 02:34:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:02,965 INFO L225 Difference]: With dead ends: 332 [2022-01-18 02:34:02,965 INFO L226 Difference]: Without dead ends: 330 [2022-01-18 02:34:02,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:34:02,977 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:02,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:34:02,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-01-18 02:34:03,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2022-01-18 02:34:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.370820668693009) internal successors, (780), 329 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 780 transitions. [2022-01-18 02:34:03,039 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 780 transitions. Word has length 62 [2022-01-18 02:34:03,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:03,039 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 780 transitions. [2022-01-18 02:34:03,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 780 transitions. [2022-01-18 02:34:03,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-18 02:34:03,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:03,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:03,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:34:03,046 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash -618423457, now seen corresponding path program 1 times [2022-01-18 02:34:03,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:03,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487823760] [2022-01-18 02:34:03,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:03,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:03,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:03,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487823760] [2022-01-18 02:34:03,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487823760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:34:03,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:34:03,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 02:34:03,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240876807] [2022-01-18 02:34:03,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:34:03,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 02:34:03,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:03,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 02:34:03,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 02:34:03,368 INFO L87 Difference]: Start difference. First operand 330 states and 780 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:03,445 INFO L93 Difference]: Finished difference Result 408 states and 990 transitions. [2022-01-18 02:34:03,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 02:34:03,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-18 02:34:03,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:03,449 INFO L225 Difference]: With dead ends: 408 [2022-01-18 02:34:03,449 INFO L226 Difference]: Without dead ends: 408 [2022-01-18 02:34:03,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-01-18 02:34:03,451 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 102 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:03,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 138 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:34:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-01-18 02:34:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 369. [2022-01-18 02:34:03,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 2.404891304347826) internal successors, (885), 368 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 885 transitions. [2022-01-18 02:34:03,476 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 885 transitions. Word has length 62 [2022-01-18 02:34:03,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:03,478 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 885 transitions. [2022-01-18 02:34:03,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:03,478 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 885 transitions. [2022-01-18 02:34:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-18 02:34:03,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:03,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:03,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:34:03,483 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:03,484 INFO L85 PathProgramCache]: Analyzing trace with hash -230953445, now seen corresponding path program 1 times [2022-01-18 02:34:03,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:03,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705271317] [2022-01-18 02:34:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:03,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:03,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:03,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705271317] [2022-01-18 02:34:03,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705271317] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:03,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216342497] [2022-01-18 02:34:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:03,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:03,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:03,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:03,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:34:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:03,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-18 02:34:03,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:03,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:03,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:04,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:04,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216342497] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:04,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:04,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-01-18 02:34:04,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92506973] [2022-01-18 02:34:04,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:04,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:34:04,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:04,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:34:04,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:34:04,183 INFO L87 Difference]: Start difference. First operand 369 states and 885 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:04,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:04,241 INFO L93 Difference]: Finished difference Result 514 states and 1250 transitions. [2022-01-18 02:34:04,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:34:04,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-18 02:34:04,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:04,248 INFO L225 Difference]: With dead ends: 514 [2022-01-18 02:34:04,248 INFO L226 Difference]: Without dead ends: 436 [2022-01-18 02:34:04,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:34:04,251 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 46 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:04,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 284 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:34:04,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-18 02:34:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 389. [2022-01-18 02:34:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 388 states have (on average 2.399484536082474) internal successors, (931), 388 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 931 transitions. [2022-01-18 02:34:04,285 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 931 transitions. Word has length 64 [2022-01-18 02:34:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:04,286 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 931 transitions. [2022-01-18 02:34:04,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 931 transitions. [2022-01-18 02:34:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:04,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:04,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:04,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:04,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:04,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:04,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:04,508 INFO L85 PathProgramCache]: Analyzing trace with hash 679645881, now seen corresponding path program 1 times [2022-01-18 02:34:04,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:04,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492030514] [2022-01-18 02:34:04,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:04,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:04,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:04,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:04,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492030514] [2022-01-18 02:34:04,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492030514] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:04,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043650285] [2022-01-18 02:34:04,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:04,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:04,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:04,796 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:04,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:34:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:04,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:04,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:05,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:05,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043650285] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:05,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:05,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:05,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186075640] [2022-01-18 02:34:05,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:05,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:05,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:05,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:05,966 INFO L87 Difference]: Start difference. First operand 389 states and 931 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:07,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:07,966 INFO L93 Difference]: Finished difference Result 1666 states and 4060 transitions. [2022-01-18 02:34:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 02:34:07,967 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:07,973 INFO L225 Difference]: With dead ends: 1666 [2022-01-18 02:34:07,974 INFO L226 Difference]: Without dead ends: 1216 [2022-01-18 02:34:07,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1743 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=998, Invalid=5008, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 02:34:07,977 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 817 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:07,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 3224 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:07,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-01-18 02:34:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 652. [2022-01-18 02:34:08,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 2.493087557603687) internal successors, (1623), 651 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1623 transitions. [2022-01-18 02:34:08,008 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1623 transitions. Word has length 69 [2022-01-18 02:34:08,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:08,010 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1623 transitions. [2022-01-18 02:34:08,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1623 transitions. [2022-01-18 02:34:08,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:08,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:08,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:08,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:08,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-18 02:34:08,234 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:08,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:08,235 INFO L85 PathProgramCache]: Analyzing trace with hash 302508043, now seen corresponding path program 2 times [2022-01-18 02:34:08,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:08,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338967212] [2022-01-18 02:34:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:08,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:08,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:08,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338967212] [2022-01-18 02:34:08,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338967212] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:08,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200750960] [2022-01-18 02:34:08,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:34:08,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:08,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:08,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:08,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:34:08,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:34:08,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:08,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:08,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:09,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:09,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:09,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200750960] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:09,677 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:09,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:09,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38510947] [2022-01-18 02:34:09,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:09,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:09,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:09,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:09,680 INFO L87 Difference]: Start difference. First operand 652 states and 1623 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:12,759 INFO L93 Difference]: Finished difference Result 2266 states and 5697 transitions. [2022-01-18 02:34:12,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 02:34:12,760 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:12,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:12,770 INFO L225 Difference]: With dead ends: 2266 [2022-01-18 02:34:12,770 INFO L226 Difference]: Without dead ends: 2113 [2022-01-18 02:34:12,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3336 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1749, Invalid=7953, Unknown=0, NotChecked=0, Total=9702 [2022-01-18 02:34:12,773 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 1325 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:12,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1325 Valid, 2773 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:34:12,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2022-01-18 02:34:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 812. [2022-01-18 02:34:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.6473489519112205) internal successors, (2147), 811 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2147 transitions. [2022-01-18 02:34:12,805 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2147 transitions. Word has length 69 [2022-01-18 02:34:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:12,805 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 2147 transitions. [2022-01-18 02:34:12,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2147 transitions. [2022-01-18 02:34:12,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:12,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:12,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:12,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:13,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:13,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:13,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:13,012 INFO L85 PathProgramCache]: Analyzing trace with hash -371365213, now seen corresponding path program 3 times [2022-01-18 02:34:13,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:13,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89014440] [2022-01-18 02:34:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:13,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:13,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:13,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89014440] [2022-01-18 02:34:13,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89014440] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:13,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324127739] [2022-01-18 02:34:13,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:34:13,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:13,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:13,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:13,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:34:13,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:34:13,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:13,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:13,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:13,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:14,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324127739] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:14,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:14,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:14,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639724016] [2022-01-18 02:34:14,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:14,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:14,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:14,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:14,369 INFO L87 Difference]: Start difference. First operand 812 states and 2147 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:18,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:18,148 INFO L93 Difference]: Finished difference Result 2427 states and 6104 transitions. [2022-01-18 02:34:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 02:34:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:18,160 INFO L225 Difference]: With dead ends: 2427 [2022-01-18 02:34:18,161 INFO L226 Difference]: Without dead ends: 2199 [2022-01-18 02:34:18,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4787 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2213, Invalid=11127, Unknown=0, NotChecked=0, Total=13340 [2022-01-18 02:34:18,166 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 1482 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:18,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 3056 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:34:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2022-01-18 02:34:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 788. [2022-01-18 02:34:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.6137229987293518) internal successors, (2057), 787 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2057 transitions. [2022-01-18 02:34:18,196 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2057 transitions. Word has length 69 [2022-01-18 02:34:18,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:18,197 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 2057 transitions. [2022-01-18 02:34:18,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:18,197 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2057 transitions. [2022-01-18 02:34:18,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:18,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:18,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:18,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:18,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:18,415 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:18,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1442639007, now seen corresponding path program 4 times [2022-01-18 02:34:18,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:18,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124192466] [2022-01-18 02:34:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:18,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:18,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:18,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:18,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124192466] [2022-01-18 02:34:18,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124192466] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:18,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266810544] [2022-01-18 02:34:18,606 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:34:18,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:18,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:18,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:18,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:34:18,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:34:18,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:18,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:18,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:19,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:19,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:19,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266810544] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:19,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:19,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:19,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345488435] [2022-01-18 02:34:19,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:19,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:19,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:19,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:19,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:19,599 INFO L87 Difference]: Start difference. First operand 788 states and 2057 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:22,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:22,015 INFO L93 Difference]: Finished difference Result 1936 states and 4877 transitions. [2022-01-18 02:34:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:34:22,015 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:22,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:22,022 INFO L225 Difference]: With dead ends: 1936 [2022-01-18 02:34:22,022 INFO L226 Difference]: Without dead ends: 1714 [2022-01-18 02:34:22,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2938 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1368, Invalid=7752, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 02:34:22,025 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 891 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:22,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 3277 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2022-01-18 02:34:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 788. [2022-01-18 02:34:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 2.5984752223634056) internal successors, (2045), 787 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 2045 transitions. [2022-01-18 02:34:22,048 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 2045 transitions. Word has length 69 [2022-01-18 02:34:22,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:22,049 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 2045 transitions. [2022-01-18 02:34:22,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 2045 transitions. [2022-01-18 02:34:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:22,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:22,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:22,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:22,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:22,268 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:22,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash -281754549, now seen corresponding path program 5 times [2022-01-18 02:34:22,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:22,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591651679] [2022-01-18 02:34:22,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:22,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:22,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591651679] [2022-01-18 02:34:22,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591651679] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62838995] [2022-01-18 02:34:22,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:34:22,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:22,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:22,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:34:22,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:34:22,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:22,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:22,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:22,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:23,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62838995] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:23,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:23,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:23,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40848306] [2022-01-18 02:34:23,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:23,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:23,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:23,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=894, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:23,463 INFO L87 Difference]: Start difference. First operand 788 states and 2045 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:25,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:25,757 INFO L93 Difference]: Finished difference Result 2147 states and 5583 transitions. [2022-01-18 02:34:25,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 02:34:25,757 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:25,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:25,766 INFO L225 Difference]: With dead ends: 2147 [2022-01-18 02:34:25,766 INFO L226 Difference]: Without dead ends: 2045 [2022-01-18 02:34:25,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2408 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1302, Invalid=6180, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:34:25,770 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 911 mSDsluCounter, 2819 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:25,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 2818 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:25,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-01-18 02:34:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 832. [2022-01-18 02:34:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 2.645006016847172) internal successors, (2198), 831 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:25,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2198 transitions. [2022-01-18 02:34:25,798 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 2198 transitions. Word has length 69 [2022-01-18 02:34:25,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:25,798 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 2198 transitions. [2022-01-18 02:34:25,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:25,799 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 2198 transitions. [2022-01-18 02:34:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:25,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:25,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:25,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:26,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:26,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:26,027 INFO L85 PathProgramCache]: Analyzing trace with hash -955627805, now seen corresponding path program 6 times [2022-01-18 02:34:26,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:26,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86918386] [2022-01-18 02:34:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:26,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:26,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:26,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86918386] [2022-01-18 02:34:26,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86918386] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:26,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929783917] [2022-01-18 02:34:26,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:34:26,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:26,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:26,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:26,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:34:26,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:34:26,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:26,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:26,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:26,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:27,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929783917] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:27,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:27,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:27,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519281486] [2022-01-18 02:34:27,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:27,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:27,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:27,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:27,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=891, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:27,193 INFO L87 Difference]: Start difference. First operand 832 states and 2198 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:29,156 INFO L93 Difference]: Finished difference Result 1911 states and 4977 transitions. [2022-01-18 02:34:29,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:34:29,156 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:29,164 INFO L225 Difference]: With dead ends: 1911 [2022-01-18 02:34:29,164 INFO L226 Difference]: Without dead ends: 1794 [2022-01-18 02:34:29,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1169, Invalid=5311, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 02:34:29,166 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 766 mSDsluCounter, 2687 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 1319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:29,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2708 Invalid, 1319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1203 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-01-18 02:34:29,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 820. [2022-01-18 02:34:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 819 states have (on average 2.623931623931624) internal successors, (2149), 819 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 2149 transitions. [2022-01-18 02:34:29,189 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 2149 transitions. Word has length 69 [2022-01-18 02:34:29,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:29,190 INFO L470 AbstractCegarLoop]: Abstraction has 820 states and 2149 transitions. [2022-01-18 02:34:29,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:29,190 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 2149 transitions. [2022-01-18 02:34:29,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:29,192 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:29,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:29,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:29,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:29,416 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:29,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:29,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1554749941, now seen corresponding path program 7 times [2022-01-18 02:34:29,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:29,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721462437] [2022-01-18 02:34:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:29,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:29,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:29,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721462437] [2022-01-18 02:34:29,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721462437] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:29,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274528354] [2022-01-18 02:34:29,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:34:29,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:29,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:29,613 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:29,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:34:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:29,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:29,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:30,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:30,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274528354] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:30,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:30,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:30,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008802065] [2022-01-18 02:34:30,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:30,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:30,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:30,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=892, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:30,580 INFO L87 Difference]: Start difference. First operand 820 states and 2149 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:32,249 INFO L93 Difference]: Finished difference Result 1835 states and 4868 transitions. [2022-01-18 02:34:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 02:34:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:32,255 INFO L225 Difference]: With dead ends: 1835 [2022-01-18 02:34:32,255 INFO L226 Difference]: Without dead ends: 1784 [2022-01-18 02:34:32,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=863, Invalid=3967, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 02:34:32,257 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 511 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:32,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 2650 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2022-01-18 02:34:32,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 836. [2022-01-18 02:34:32,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 2.645508982035928) internal successors, (2209), 835 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 2209 transitions. [2022-01-18 02:34:32,277 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 2209 transitions. Word has length 69 [2022-01-18 02:34:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:32,278 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 2209 transitions. [2022-01-18 02:34:32,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 2209 transitions. [2022-01-18 02:34:32,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:32,280 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:32,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:32,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:32,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-18 02:34:32,495 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:32,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:32,496 INFO L85 PathProgramCache]: Analyzing trace with hash 880876685, now seen corresponding path program 8 times [2022-01-18 02:34:32,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:32,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711741516] [2022-01-18 02:34:32,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:32,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:32,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:32,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711741516] [2022-01-18 02:34:32,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711741516] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:32,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583506155] [2022-01-18 02:34:32,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:34:32,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:32,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:32,725 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:32,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:34:32,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:34:32,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:32,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:32,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:33,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:33,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:33,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583506155] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:33,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:33,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:33,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272455139] [2022-01-18 02:34:33,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:33,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:33,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:33,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=887, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:33,646 INFO L87 Difference]: Start difference. First operand 836 states and 2209 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:35,034 INFO L93 Difference]: Finished difference Result 1685 states and 4489 transitions. [2022-01-18 02:34:35,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:34:35,035 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:35,040 INFO L225 Difference]: With dead ends: 1685 [2022-01-18 02:34:35,040 INFO L226 Difference]: Without dead ends: 1619 [2022-01-18 02:34:35,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=803, Invalid=3619, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 02:34:35,041 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 556 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:35,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 2416 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:34:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1619 states. [2022-01-18 02:34:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1619 to 816. [2022-01-18 02:34:35,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 816 states, 815 states have (on average 2.6233128834355828) internal successors, (2138), 815 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 2138 transitions. [2022-01-18 02:34:35,061 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 2138 transitions. Word has length 69 [2022-01-18 02:34:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:35,061 INFO L470 AbstractCegarLoop]: Abstraction has 816 states and 2138 transitions. [2022-01-18 02:34:35,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 2138 transitions. [2022-01-18 02:34:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:35,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:35,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:35,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:35,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:35,284 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:35,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:35,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1872132149, now seen corresponding path program 9 times [2022-01-18 02:34:35,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:35,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270779186] [2022-01-18 02:34:35,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:35,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:35,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:35,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270779186] [2022-01-18 02:34:35,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270779186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:35,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751400919] [2022-01-18 02:34:35,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:34:35,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:35,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:35,491 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:35,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:34:35,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:34:35,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:35,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:35,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:35,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:36,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751400919] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:36,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:36,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:36,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786553692] [2022-01-18 02:34:36,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:36,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:36,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:36,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:36,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=885, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:36,493 INFO L87 Difference]: Start difference. First operand 816 states and 2138 transitions. Second operand has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:38,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:38,613 INFO L93 Difference]: Finished difference Result 1947 states and 5148 transitions. [2022-01-18 02:34:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:34:38,614 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:38,622 INFO L225 Difference]: With dead ends: 1947 [2022-01-18 02:34:38,622 INFO L226 Difference]: Without dead ends: 1896 [2022-01-18 02:34:38,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1128, Invalid=4572, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 02:34:38,623 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 742 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:38,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1999 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:34:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-01-18 02:34:38,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 832. [2022-01-18 02:34:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 831 states have (on average 2.6498194945848375) internal successors, (2202), 831 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:38,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 2202 transitions. [2022-01-18 02:34:38,643 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 2202 transitions. Word has length 69 [2022-01-18 02:34:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:38,643 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 2202 transitions. [2022-01-18 02:34:38,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.212121212121212) internal successors, (139), 33 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:38,643 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 2202 transitions. [2022-01-18 02:34:38,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:38,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:38,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:38,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:38,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 02:34:38,859 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:38,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:38,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1198258893, now seen corresponding path program 10 times [2022-01-18 02:34:38,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:38,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200917271] [2022-01-18 02:34:38,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:38,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:39,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:39,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200917271] [2022-01-18 02:34:39,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200917271] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:39,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162596369] [2022-01-18 02:34:39,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:34:39,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:39,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:39,068 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:39,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:34:39,122 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:34:39,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:39,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:39,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:39,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:40,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162596369] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:40,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:40,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2022-01-18 02:34:40,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913387029] [2022-01-18 02:34:40,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:40,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 02:34:40,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:40,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 02:34:40,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:34:40,099 INFO L87 Difference]: Start difference. First operand 832 states and 2202 transitions. Second operand has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:41,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:41,424 INFO L93 Difference]: Finished difference Result 1681 states and 4422 transitions. [2022-01-18 02:34:41,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:34:41,425 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:41,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:41,433 INFO L225 Difference]: With dead ends: 1681 [2022-01-18 02:34:41,434 INFO L226 Difference]: Without dead ends: 1615 [2022-01-18 02:34:41,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=798, Invalid=3108, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 02:34:41,435 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 568 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:41,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2236 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:34:41,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2022-01-18 02:34:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 812. [2022-01-18 02:34:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.62268803945746) internal successors, (2127), 811 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2127 transitions. [2022-01-18 02:34:41,453 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2127 transitions. Word has length 69 [2022-01-18 02:34:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:41,454 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 2127 transitions. [2022-01-18 02:34:41,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.151515151515151) internal successors, (137), 33 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:41,454 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2127 transitions. [2022-01-18 02:34:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:41,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:41,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:41,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-01-18 02:34:41,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 02:34:41,663 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:41,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash -908930907, now seen corresponding path program 11 times [2022-01-18 02:34:41,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:41,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170177390] [2022-01-18 02:34:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:41,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:41,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:41,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170177390] [2022-01-18 02:34:41,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170177390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:41,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072246924] [2022-01-18 02:34:41,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:34:41,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:41,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:41,887 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:41,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:34:41,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:34:41,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:41,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:41,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:42,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:42,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:42,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072246924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:42,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:42,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:34:42,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064360134] [2022-01-18 02:34:42,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:42,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:34:42,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:34:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:34:42,935 INFO L87 Difference]: Start difference. First operand 812 states and 2127 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:46,006 INFO L93 Difference]: Finished difference Result 2421 states and 6256 transitions. [2022-01-18 02:34:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:34:46,006 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:46,011 INFO L225 Difference]: With dead ends: 2421 [2022-01-18 02:34:46,011 INFO L226 Difference]: Without dead ends: 2268 [2022-01-18 02:34:46,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2646 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1514, Invalid=6858, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 02:34:46,012 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 952 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:46,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 2536 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:46,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2268 states. [2022-01-18 02:34:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2268 to 948. [2022-01-18 02:34:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 947 states have (on average 2.7212249208025345) internal successors, (2577), 947 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:46,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 2577 transitions. [2022-01-18 02:34:46,034 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 2577 transitions. Word has length 69 [2022-01-18 02:34:46,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:46,034 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 2577 transitions. [2022-01-18 02:34:46,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 2577 transitions. [2022-01-18 02:34:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:46,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:46,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:46,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-18 02:34:46,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 02:34:46,251 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:46,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:46,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1582804163, now seen corresponding path program 12 times [2022-01-18 02:34:46,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:46,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579540448] [2022-01-18 02:34:46,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:46,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:46,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:46,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:46,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579540448] [2022-01-18 02:34:46,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579540448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:46,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822274605] [2022-01-18 02:34:46,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:34:46,442 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:46,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:46,443 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:46,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:34:46,489 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:34:46,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:46,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:46,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:46,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:46,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:47,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822274605] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:47,393 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:47,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:34:47,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514557789] [2022-01-18 02:34:47,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:47,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:34:47,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:47,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:34:47,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=774, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:34:47,395 INFO L87 Difference]: Start difference. First operand 948 states and 2577 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:49,720 INFO L93 Difference]: Finished difference Result 2140 states and 5563 transitions. [2022-01-18 02:34:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 02:34:49,720 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:49,725 INFO L225 Difference]: With dead ends: 2140 [2022-01-18 02:34:49,725 INFO L226 Difference]: Without dead ends: 1912 [2022-01-18 02:34:49,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1135, Invalid=4871, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 02:34:49,726 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 906 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 2346 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:49,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 2346 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-01-18 02:34:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 924. [2022-01-18 02:34:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 923 states have (on average 2.677139761646804) internal successors, (2471), 923 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 2471 transitions. [2022-01-18 02:34:49,748 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 2471 transitions. Word has length 69 [2022-01-18 02:34:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:49,748 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 2471 transitions. [2022-01-18 02:34:49,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:49,748 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 2471 transitions. [2022-01-18 02:34:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:49,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:49,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:49,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:49,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 02:34:49,963 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:49,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:49,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1345350197, now seen corresponding path program 13 times [2022-01-18 02:34:49,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:49,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812222959] [2022-01-18 02:34:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:49,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:50,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:50,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:50,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812222959] [2022-01-18 02:34:50,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812222959] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:50,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033433981] [2022-01-18 02:34:50,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:34:50,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:50,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:50,156 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:50,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:34:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:50,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:50,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:50,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:51,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033433981] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:51,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:51,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:34:51,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869697188] [2022-01-18 02:34:51,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:51,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:34:51,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:34:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:34:51,095 INFO L87 Difference]: Start difference. First operand 924 states and 2471 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:53,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:53,899 INFO L93 Difference]: Finished difference Result 2474 states and 6518 transitions. [2022-01-18 02:34:53,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 02:34:53,899 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:53,904 INFO L225 Difference]: With dead ends: 2474 [2022-01-18 02:34:53,904 INFO L226 Difference]: Without dead ends: 2372 [2022-01-18 02:34:53,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1835, Invalid=7477, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 02:34:53,906 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 842 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:53,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 2719 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:53,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-01-18 02:34:53,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 1048. [2022-01-18 02:34:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 2.7621776504297992) internal successors, (2892), 1047 states have internal predecessors, (2892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 2892 transitions. [2022-01-18 02:34:53,932 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 2892 transitions. Word has length 69 [2022-01-18 02:34:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:53,933 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 2892 transitions. [2022-01-18 02:34:53,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 2892 transitions. [2022-01-18 02:34:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:53,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:53,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:53,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 02:34:54,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:54,158 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:54,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2019223453, now seen corresponding path program 14 times [2022-01-18 02:34:54,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:54,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633197241] [2022-01-18 02:34:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:54,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:54,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:54,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633197241] [2022-01-18 02:34:54,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633197241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:54,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623560760] [2022-01-18 02:34:54,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:34:54,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:54,350 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:54,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:34:54,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:34:54,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:54,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:54,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:54,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:54,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:55,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:55,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623560760] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:55,298 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:55,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:34:55,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938956865] [2022-01-18 02:34:55,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:55,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:34:55,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:55,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:34:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:34:55,299 INFO L87 Difference]: Start difference. First operand 1048 states and 2892 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:34:58,279 INFO L93 Difference]: Finished difference Result 2541 states and 6662 transitions. [2022-01-18 02:34:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:34:58,280 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:34:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:34:58,285 INFO L225 Difference]: With dead ends: 2541 [2022-01-18 02:34:58,286 INFO L226 Difference]: Without dead ends: 2394 [2022-01-18 02:34:58,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2884 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1699, Invalid=7231, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 02:34:58,287 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 826 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2873 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:34:58,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2873 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:34:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2022-01-18 02:34:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 1008. [2022-01-18 02:34:58,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 1007 states have (on average 2.714995034756703) internal successors, (2734), 1007 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 2734 transitions. [2022-01-18 02:34:58,312 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 2734 transitions. Word has length 69 [2022-01-18 02:34:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:34:58,313 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 2734 transitions. [2022-01-18 02:34:58,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:34:58,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 2734 transitions. [2022-01-18 02:34:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:34:58,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:34:58,315 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:34:58,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 02:34:58,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 02:34:58,531 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:34:58,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:34:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash -205219233, now seen corresponding path program 15 times [2022-01-18 02:34:58,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:34:58,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431449901] [2022-01-18 02:34:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:34:58,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:34:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:34:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:58,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:34:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431449901] [2022-01-18 02:34:58,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431449901] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:34:58,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946303938] [2022-01-18 02:34:58,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:34:58,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:34:58,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:34:58,728 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:34:58,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 02:34:58,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:34:58,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:34:58,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:34:58,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:34:59,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:59,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:34:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:34:59,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946303938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:34:59,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:34:59,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:34:59,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740397877] [2022-01-18 02:34:59,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:34:59,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:34:59,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:34:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:34:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=832, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:34:59,642 INFO L87 Difference]: Start difference. First operand 1008 states and 2734 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:01,383 INFO L93 Difference]: Finished difference Result 2277 states and 5902 transitions. [2022-01-18 02:35:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 02:35:01,383 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:01,388 INFO L225 Difference]: With dead ends: 2277 [2022-01-18 02:35:01,388 INFO L226 Difference]: Without dead ends: 2070 [2022-01-18 02:35:01,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=989, Invalid=5017, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 02:35:01,390 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 619 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:01,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2771 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2022-01-18 02:35:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 968. [2022-01-18 02:35:01,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 2.672182006204757) internal successors, (2584), 967 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2584 transitions. [2022-01-18 02:35:01,426 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2584 transitions. Word has length 69 [2022-01-18 02:35:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:01,426 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 2584 transitions. [2022-01-18 02:35:01,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:01,426 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2584 transitions. [2022-01-18 02:35:01,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:01,428 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:01,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:01,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:01,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-18 02:35:01,643 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:01,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1138393483, now seen corresponding path program 16 times [2022-01-18 02:35:01,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:01,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259775055] [2022-01-18 02:35:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:01,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:01,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:01,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259775055] [2022-01-18 02:35:01,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259775055] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:01,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538174406] [2022-01-18 02:35:01,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:35:01,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:01,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:01,816 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:01,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 02:35:01,875 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:35:01,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:01,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:01,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:02,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:02,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538174406] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:02,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:02,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:02,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449093507] [2022-01-18 02:35:02,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:02,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:02,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:02,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:02,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:02,686 INFO L87 Difference]: Start difference. First operand 968 states and 2584 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:04,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:04,251 INFO L93 Difference]: Finished difference Result 1943 states and 5153 transitions. [2022-01-18 02:35:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 02:35:04,251 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:04,256 INFO L225 Difference]: With dead ends: 1943 [2022-01-18 02:35:04,256 INFO L226 Difference]: Without dead ends: 1892 [2022-01-18 02:35:04,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=777, Invalid=3645, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 02:35:04,258 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 597 mSDsluCounter, 2201 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:04,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 2252 Invalid, 1422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2022-01-18 02:35:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 984. [2022-01-18 02:35:04,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 983 states have (on average 2.6897253306205493) internal successors, (2644), 983 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:04,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 2644 transitions. [2022-01-18 02:35:04,292 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 2644 transitions. Word has length 69 [2022-01-18 02:35:04,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:04,293 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 2644 transitions. [2022-01-18 02:35:04,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 2644 transitions. [2022-01-18 02:35:04,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:04,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:04,295 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:04,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:04,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:04,516 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 464520227, now seen corresponding path program 17 times [2022-01-18 02:35:04,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505275632] [2022-01-18 02:35:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:04,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:04,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:04,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505275632] [2022-01-18 02:35:04,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505275632] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:04,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548307329] [2022-01-18 02:35:04,719 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:35:04,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:04,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:04,724 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:04,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 02:35:04,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:35:04,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:05,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:05,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:05,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548307329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:05,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:05,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:05,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154460590] [2022-01-18 02:35:05,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:05,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:05,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:05,613 INFO L87 Difference]: Start difference. First operand 984 states and 2644 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:07,027 INFO L93 Difference]: Finished difference Result 1741 states and 4635 transitions. [2022-01-18 02:35:07,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 02:35:07,028 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:07,031 INFO L225 Difference]: With dead ends: 1741 [2022-01-18 02:35:07,031 INFO L226 Difference]: Without dead ends: 1675 [2022-01-18 02:35:07,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=771, Invalid=3519, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:35:07,033 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 452 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:07,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 2397 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:07,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2022-01-18 02:35:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 972. [2022-01-18 02:35:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 2.6725025746652937) internal successors, (2595), 971 states have internal predecessors, (2595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:07,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2595 transitions. [2022-01-18 02:35:07,054 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2595 transitions. Word has length 69 [2022-01-18 02:35:07,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:07,055 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 2595 transitions. [2022-01-18 02:35:07,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2595 transitions. [2022-01-18 02:35:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:07,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:07,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:07,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:07,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:07,268 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:07,268 INFO L85 PathProgramCache]: Analyzing trace with hash -639518377, now seen corresponding path program 18 times [2022-01-18 02:35:07,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:07,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681292315] [2022-01-18 02:35:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:07,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:07,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:07,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681292315] [2022-01-18 02:35:07,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681292315] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:07,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319240835] [2022-01-18 02:35:07,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:35:07,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:07,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:07,445 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:07,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 02:35:07,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:35:07,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:07,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 02:35:07,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:08,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:08,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:08,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319240835] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:08,933 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:08,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 38 [2022-01-18 02:35:08,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674107457] [2022-01-18 02:35:08,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:08,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:35:08,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:35:08,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:35:08,935 INFO L87 Difference]: Start difference. First operand 972 states and 2595 transitions. Second operand has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:11,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:11,651 INFO L93 Difference]: Finished difference Result 2080 states and 5468 transitions. [2022-01-18 02:35:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 02:35:11,652 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:11,655 INFO L225 Difference]: With dead ends: 2080 [2022-01-18 02:35:11,655 INFO L226 Difference]: Without dead ends: 2029 [2022-01-18 02:35:11,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1406, Invalid=6076, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:35:11,656 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 915 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 2334 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:11,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [915 Valid, 2334 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:35:11,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2022-01-18 02:35:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1020. [2022-01-18 02:35:11,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 1019 states have (on average 2.6957801766437686) internal successors, (2747), 1019 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 2747 transitions. [2022-01-18 02:35:11,680 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 2747 transitions. Word has length 69 [2022-01-18 02:35:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:11,680 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 2747 transitions. [2022-01-18 02:35:11,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 2747 transitions. [2022-01-18 02:35:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:11,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:11,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:11,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:11,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:11,903 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1313391633, now seen corresponding path program 19 times [2022-01-18 02:35:11,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:11,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970424117] [2022-01-18 02:35:11,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:11,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:12,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:12,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970424117] [2022-01-18 02:35:12,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970424117] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:12,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259443809] [2022-01-18 02:35:12,104 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:35:12,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:12,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:12,108 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:12,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 02:35:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:12,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:12,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:12,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:13,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:13,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259443809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:13,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:13,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:13,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620622616] [2022-01-18 02:35:13,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:13,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:13,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:13,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:13,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:13,032 INFO L87 Difference]: Start difference. First operand 1020 states and 2747 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:14,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:14,278 INFO L93 Difference]: Finished difference Result 1688 states and 4545 transitions. [2022-01-18 02:35:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 02:35:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:14,281 INFO L225 Difference]: With dead ends: 1688 [2022-01-18 02:35:14,281 INFO L226 Difference]: Without dead ends: 1622 [2022-01-18 02:35:14,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=666, Invalid=2640, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 02:35:14,281 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 421 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:14,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [421 Valid, 2401 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:14,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2022-01-18 02:35:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1016. [2022-01-18 02:35:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1016 states, 1015 states have (on average 2.695566502463054) internal successors, (2736), 1015 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1016 states to 1016 states and 2736 transitions. [2022-01-18 02:35:14,300 INFO L78 Accepts]: Start accepts. Automaton has 1016 states and 2736 transitions. Word has length 69 [2022-01-18 02:35:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:14,300 INFO L470 AbstractCegarLoop]: Abstraction has 1016 states and 2736 transitions. [2022-01-18 02:35:14,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states and 2736 transitions. [2022-01-18 02:35:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:14,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:14,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:14,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:14,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-18 02:35:14,525 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:14,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:14,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1916474139, now seen corresponding path program 20 times [2022-01-18 02:35:14,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:14,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005985639] [2022-01-18 02:35:14,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:14,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:14,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:14,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005985639] [2022-01-18 02:35:14,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005985639] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:14,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491863660] [2022-01-18 02:35:14,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:35:14,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:14,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:14,730 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:14,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 02:35:14,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:35:14,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:14,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:14,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:15,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:15,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491863660] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:15,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:15,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:35:15,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150047308] [2022-01-18 02:35:15,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:15,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:35:15,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:15,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:35:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:35:15,575 INFO L87 Difference]: Start difference. First operand 1016 states and 2736 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:18,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:18,365 INFO L93 Difference]: Finished difference Result 2804 states and 7312 transitions. [2022-01-18 02:35:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:35:18,365 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:18,369 INFO L225 Difference]: With dead ends: 2804 [2022-01-18 02:35:18,369 INFO L226 Difference]: Without dead ends: 2651 [2022-01-18 02:35:18,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2614 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1397, Invalid=6975, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 02:35:18,370 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 1072 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:18,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 2487 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:35:18,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-01-18 02:35:18,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 1172. [2022-01-18 02:35:18,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1172 states, 1171 states have (on average 2.7711357813834328) internal successors, (3245), 1171 states have internal predecessors, (3245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:18,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1172 states to 1172 states and 3245 transitions. [2022-01-18 02:35:18,394 INFO L78 Accepts]: Start accepts. Automaton has 1172 states and 3245 transitions. Word has length 69 [2022-01-18 02:35:18,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:18,395 INFO L470 AbstractCegarLoop]: Abstraction has 1172 states and 3245 transitions. [2022-01-18 02:35:18,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:18,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1172 states and 3245 transitions. [2022-01-18 02:35:18,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:18,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:18,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:18,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:18,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 02:35:18,611 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:18,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:18,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1704619901, now seen corresponding path program 21 times [2022-01-18 02:35:18,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:18,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732270684] [2022-01-18 02:35:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:18,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:18,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:18,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732270684] [2022-01-18 02:35:18,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732270684] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:18,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757391893] [2022-01-18 02:35:18,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:35:18,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:18,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:18,780 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:18,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 02:35:18,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:35:18,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:18,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:18,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:19,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:19,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757391893] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:19,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:19,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:35:19,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528096329] [2022-01-18 02:35:19,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:19,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:35:19,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:35:19,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:35:19,684 INFO L87 Difference]: Start difference. First operand 1172 states and 3245 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:21,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:21,995 INFO L93 Difference]: Finished difference Result 2627 states and 6998 transitions. [2022-01-18 02:35:21,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 02:35:21,995 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:21,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:21,999 INFO L225 Difference]: With dead ends: 2627 [2022-01-18 02:35:21,999 INFO L226 Difference]: Without dead ends: 2348 [2022-01-18 02:35:22,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1941 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1200, Invalid=5442, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:35:22,000 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 893 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 2434 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:22,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 2434 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:22,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-18 02:35:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 1328. [2022-01-18 02:35:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1327 states have (on average 2.8138658628485307) internal successors, (3734), 1327 states have internal predecessors, (3734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 3734 transitions. [2022-01-18 02:35:22,021 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 3734 transitions. Word has length 69 [2022-01-18 02:35:22,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:22,021 INFO L470 AbstractCegarLoop]: Abstraction has 1328 states and 3734 transitions. [2022-01-18 02:35:22,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 3734 transitions. [2022-01-18 02:35:22,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:22,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:22,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:22,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 02:35:22,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:22,224 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:22,224 INFO L85 PathProgramCache]: Analyzing trace with hash 331809321, now seen corresponding path program 22 times [2022-01-18 02:35:22,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:22,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743871980] [2022-01-18 02:35:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:22,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:22,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:22,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:22,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743871980] [2022-01-18 02:35:22,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743871980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:22,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660107871] [2022-01-18 02:35:22,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:35:22,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:22,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:22,395 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:22,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 02:35:22,444 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:35:22,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:22,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:22,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:22,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:22,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:23,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:23,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660107871] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:23,275 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:23,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:35:23,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513678670] [2022-01-18 02:35:23,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:23,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:35:23,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:23,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:35:23,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:35:23,277 INFO L87 Difference]: Start difference. First operand 1328 states and 3734 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:25,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:25,737 INFO L93 Difference]: Finished difference Result 2743 states and 7353 transitions. [2022-01-18 02:35:25,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 02:35:25,738 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:25,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:25,741 INFO L225 Difference]: With dead ends: 2743 [2022-01-18 02:35:25,741 INFO L226 Difference]: Without dead ends: 2464 [2022-01-18 02:35:25,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1228, Invalid=5744, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 02:35:25,742 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 892 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:25,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 2462 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:25,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2022-01-18 02:35:25,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1232. [2022-01-18 02:35:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1231 states have (on average 2.7831031681559706) internal successors, (3426), 1231 states have internal predecessors, (3426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 3426 transitions. [2022-01-18 02:35:25,762 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 3426 transitions. Word has length 69 [2022-01-18 02:35:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:25,762 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 3426 transitions. [2022-01-18 02:35:25,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 3426 transitions. [2022-01-18 02:35:25,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:25,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:25,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:25,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:25,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:25,967 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 569263287, now seen corresponding path program 23 times [2022-01-18 02:35:25,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:25,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455216476] [2022-01-18 02:35:25,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:25,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:26,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:26,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455216476] [2022-01-18 02:35:26,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455216476] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:26,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32782312] [2022-01-18 02:35:26,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:35:26,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:26,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:26,122 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:26,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 02:35:26,173 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:35:26,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:26,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:26,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:26,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:26,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32782312] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:26,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:26,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:26,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241128435] [2022-01-18 02:35:26,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:26,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:26,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:26,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:26,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:26,917 INFO L87 Difference]: Start difference. First operand 1232 states and 3426 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:29,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:29,900 INFO L93 Difference]: Finished difference Result 3170 states and 8607 transitions. [2022-01-18 02:35:29,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 02:35:29,900 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:29,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:29,904 INFO L225 Difference]: With dead ends: 3170 [2022-01-18 02:35:29,905 INFO L226 Difference]: Without dead ends: 3068 [2022-01-18 02:35:29,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3394 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1831, Invalid=8069, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:35:29,905 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 810 mSDsluCounter, 2624 mSDsCounter, 0 mSdLazyCounter, 1444 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:29,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [810 Valid, 2702 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1444 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:35:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3068 states. [2022-01-18 02:35:29,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3068 to 1332. [2022-01-18 02:35:29,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1331 states have (on average 2.825694966190834) internal successors, (3761), 1331 states have internal predecessors, (3761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 3761 transitions. [2022-01-18 02:35:29,928 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 3761 transitions. Word has length 69 [2022-01-18 02:35:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:29,928 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 3761 transitions. [2022-01-18 02:35:29,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:29,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 3761 transitions. [2022-01-18 02:35:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:29,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:29,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:29,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:30,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 02:35:30,130 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:30,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:30,131 INFO L85 PathProgramCache]: Analyzing trace with hash -104609969, now seen corresponding path program 24 times [2022-01-18 02:35:30,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:30,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405677876] [2022-01-18 02:35:30,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:30,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:30,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:30,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405677876] [2022-01-18 02:35:30,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405677876] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:30,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573292341] [2022-01-18 02:35:30,299 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:35:30,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:30,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:30,300 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:30,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 02:35:30,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:35:30,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:30,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:30,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:30,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:30,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:31,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:31,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573292341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:31,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:31,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:31,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069567573] [2022-01-18 02:35:31,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:31,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:31,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:31,131 INFO L87 Difference]: Start difference. First operand 1332 states and 3761 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:34,182 INFO L93 Difference]: Finished difference Result 2794 states and 7452 transitions. [2022-01-18 02:35:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 02:35:34,182 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:34,186 INFO L225 Difference]: With dead ends: 2794 [2022-01-18 02:35:34,186 INFO L226 Difference]: Without dead ends: 2623 [2022-01-18 02:35:34,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3103 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1769, Invalid=7737, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 02:35:34,188 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 835 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 1543 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:34,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 2902 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:35:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2623 states. [2022-01-18 02:35:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2623 to 1364. [2022-01-18 02:35:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1363 states have (on average 2.8239178283198827) internal successors, (3849), 1363 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:34,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 3849 transitions. [2022-01-18 02:35:34,225 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 3849 transitions. Word has length 69 [2022-01-18 02:35:34,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:34,225 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 3849 transitions. [2022-01-18 02:35:34,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 3849 transitions. [2022-01-18 02:35:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:34,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:34,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:34,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:34,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 02:35:34,428 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:34,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1709394251, now seen corresponding path program 25 times [2022-01-18 02:35:34,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:34,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660456608] [2022-01-18 02:35:34,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:34,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:34,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:34,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:34,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660456608] [2022-01-18 02:35:34,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660456608] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:34,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443673148] [2022-01-18 02:35:34,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:35:34,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:34,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:34,602 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:34,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 02:35:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:34,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:34,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:34,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:34,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:35,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:35,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443673148] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:35,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:35,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:35,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454492839] [2022-01-18 02:35:35,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:35,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:35,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:35,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:35,381 INFO L87 Difference]: Start difference. First operand 1364 states and 3849 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:37,032 INFO L93 Difference]: Finished difference Result 2436 states and 6507 transitions. [2022-01-18 02:35:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 02:35:37,033 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:37,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:37,037 INFO L225 Difference]: With dead ends: 2436 [2022-01-18 02:35:37,037 INFO L226 Difference]: Without dead ends: 2229 [2022-01-18 02:35:37,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=970, Invalid=4882, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 02:35:37,038 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 526 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:37,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 2594 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:37,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2022-01-18 02:35:37,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1284. [2022-01-18 02:35:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.7911145752143414) internal successors, (3581), 1283 states have internal predecessors, (3581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3581 transitions. [2022-01-18 02:35:37,056 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3581 transitions. Word has length 69 [2022-01-18 02:35:37,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:37,057 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 3581 transitions. [2022-01-18 02:35:37,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:37,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3581 transitions. [2022-01-18 02:35:37,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:37,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:37,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:37,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:37,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 02:35:37,265 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:37,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1915833585, now seen corresponding path program 26 times [2022-01-18 02:35:37,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:37,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081831083] [2022-01-18 02:35:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:37,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:37,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:37,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081831083] [2022-01-18 02:35:37,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081831083] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:37,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666807764] [2022-01-18 02:35:37,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:35:37,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:37,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:37,434 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:37,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 02:35:37,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:35:37,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:37,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:37,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:37,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:38,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666807764] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:38,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:38,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:38,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557726825] [2022-01-18 02:35:38,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:38,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:38,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:38,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:38,260 INFO L87 Difference]: Start difference. First operand 1284 states and 3581 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:41,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:41,341 INFO L93 Difference]: Finished difference Result 2984 states and 8166 transitions. [2022-01-18 02:35:41,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:35:41,342 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:41,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:41,345 INFO L225 Difference]: With dead ends: 2984 [2022-01-18 02:35:41,345 INFO L226 Difference]: Without dead ends: 2816 [2022-01-18 02:35:41,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1772, Invalid=9358, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 02:35:41,346 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 570 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:41,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [570 Valid, 3377 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:35:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2022-01-18 02:35:41,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 1440. [2022-01-18 02:35:41,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 2.8339124391938846) internal successors, (4078), 1439 states have internal predecessors, (4078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 4078 transitions. [2022-01-18 02:35:41,369 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 4078 transitions. Word has length 69 [2022-01-18 02:35:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:41,369 INFO L470 AbstractCegarLoop]: Abstraction has 1440 states and 4078 transitions. [2022-01-18 02:35:41,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 4078 transitions. [2022-01-18 02:35:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:41,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:41,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:41,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 02:35:41,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 02:35:41,595 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash 601221851, now seen corresponding path program 27 times [2022-01-18 02:35:41,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:41,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407804275] [2022-01-18 02:35:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:41,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:41,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:41,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:41,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407804275] [2022-01-18 02:35:41,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407804275] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:41,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216998795] [2022-01-18 02:35:41,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:35:41,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:41,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:41,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:41,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 02:35:41,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:35:41,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:41,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:41,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:42,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:42,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216998795] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:42,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:42,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:35:42,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359403552] [2022-01-18 02:35:42,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:42,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:35:42,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:35:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:35:42,677 INFO L87 Difference]: Start difference. First operand 1440 states and 4078 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:44,802 INFO L93 Difference]: Finished difference Result 2886 states and 8086 transitions. [2022-01-18 02:35:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 02:35:44,802 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:44,806 INFO L225 Difference]: With dead ends: 2886 [2022-01-18 02:35:44,806 INFO L226 Difference]: Without dead ends: 2706 [2022-01-18 02:35:44,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1807 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1027, Invalid=4979, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 02:35:44,807 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 630 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:44,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2360 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-01-18 02:35:44,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 1684. [2022-01-18 02:35:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 2.866904337492573) internal successors, (4825), 1683 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 4825 transitions. [2022-01-18 02:35:44,835 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 4825 transitions. Word has length 69 [2022-01-18 02:35:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:44,835 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 4825 transitions. [2022-01-18 02:35:44,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:44,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 4825 transitions. [2022-01-18 02:35:44,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:44,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:44,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:44,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:45,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:45,059 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:45,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:45,060 INFO L85 PathProgramCache]: Analyzing trace with hash 407050943, now seen corresponding path program 28 times [2022-01-18 02:35:45,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:45,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174937907] [2022-01-18 02:35:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:45,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:45,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:45,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:45,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174937907] [2022-01-18 02:35:45,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174937907] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:45,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454861902] [2022-01-18 02:35:45,226 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:35:45,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:45,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:45,227 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:45,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 02:35:45,282 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:35:45,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:45,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:45,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:45,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:45,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:46,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454861902] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:46,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:46,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:35:46,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799683898] [2022-01-18 02:35:46,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:46,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:35:46,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:35:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:35:46,112 INFO L87 Difference]: Start difference. First operand 1684 states and 4825 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:48,432 INFO L93 Difference]: Finished difference Result 3462 states and 9392 transitions. [2022-01-18 02:35:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:35:48,433 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:48,437 INFO L225 Difference]: With dead ends: 3462 [2022-01-18 02:35:48,437 INFO L226 Difference]: Without dead ends: 3258 [2022-01-18 02:35:48,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1217, Invalid=4945, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:35:48,438 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 787 mSDsluCounter, 2384 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:48,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [787 Valid, 2403 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:48,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2022-01-18 02:35:48,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 1800. [2022-01-18 02:35:48,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1799 states have (on average 2.886047804335742) internal successors, (5192), 1799 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:48,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 5192 transitions. [2022-01-18 02:35:48,464 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 5192 transitions. Word has length 69 [2022-01-18 02:35:48,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:48,465 INFO L470 AbstractCegarLoop]: Abstraction has 1800 states and 5192 transitions. [2022-01-18 02:35:48,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:48,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 5192 transitions. [2022-01-18 02:35:48,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:48,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:48,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:48,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:48,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:48,668 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:48,668 INFO L85 PathProgramCache]: Analyzing trace with hash -266822313, now seen corresponding path program 29 times [2022-01-18 02:35:48,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:48,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330341587] [2022-01-18 02:35:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:48,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:48,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:48,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330341587] [2022-01-18 02:35:48,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330341587] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:48,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196994814] [2022-01-18 02:35:48,861 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:35:48,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:48,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:48,864 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:48,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 02:35:48,939 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:35:48,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:48,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:48,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:49,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:49,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196994814] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:49,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:49,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:35:49,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350768011] [2022-01-18 02:35:49,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:49,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:35:49,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:49,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:35:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:35:49,845 INFO L87 Difference]: Start difference. First operand 1800 states and 5192 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:51,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:51,608 INFO L93 Difference]: Finished difference Result 3061 states and 8375 transitions. [2022-01-18 02:35:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 02:35:51,609 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:51,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:51,614 INFO L225 Difference]: With dead ends: 3061 [2022-01-18 02:35:51,614 INFO L226 Difference]: Without dead ends: 2833 [2022-01-18 02:35:51,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=851, Invalid=3571, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 02:35:51,615 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 673 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:51,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 2413 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:51,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2022-01-18 02:35:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 1776. [2022-01-18 02:35:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1776 states, 1775 states have (on average 2.865352112676056) internal successors, (5086), 1775 states have internal predecessors, (5086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:51,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1776 states to 1776 states and 5086 transitions. [2022-01-18 02:35:51,657 INFO L78 Accepts]: Start accepts. Automaton has 1776 states and 5086 transitions. Word has length 69 [2022-01-18 02:35:51,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:51,658 INFO L470 AbstractCegarLoop]: Abstraction has 1776 states and 5086 transitions. [2022-01-18 02:35:51,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:51,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1776 states and 5086 transitions. [2022-01-18 02:35:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:51,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:51,661 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:51,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:51,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-01-18 02:35:51,882 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1230124231, now seen corresponding path program 30 times [2022-01-18 02:35:51,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:51,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100824288] [2022-01-18 02:35:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:51,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:52,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:52,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100824288] [2022-01-18 02:35:52,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100824288] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:52,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304891892] [2022-01-18 02:35:52,079 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:35:52,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:52,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:52,081 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:52,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 02:35:52,142 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 02:35:52,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:52,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:52,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:52,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:52,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:52,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:52,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304891892] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:52,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:52,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:35:52,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704260600] [2022-01-18 02:35:52,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:52,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:35:52,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:35:52,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:35:52,957 INFO L87 Difference]: Start difference. First operand 1776 states and 5086 transitions. Second operand has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:56,104 INFO L93 Difference]: Finished difference Result 3869 states and 10465 transitions. [2022-01-18 02:35:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:35:56,104 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:56,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:56,109 INFO L225 Difference]: With dead ends: 3869 [2022-01-18 02:35:56,109 INFO L226 Difference]: Without dead ends: 3665 [2022-01-18 02:35:56,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1510, Invalid=7046, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 02:35:56,110 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 992 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1550 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:56,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 2619 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1550 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:35:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2022-01-18 02:35:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 1996. [2022-01-18 02:35:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1996 states, 1995 states have (on average 2.8987468671679197) internal successors, (5783), 1995 states have internal predecessors, (5783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 5783 transitions. [2022-01-18 02:35:56,143 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 5783 transitions. Word has length 69 [2022-01-18 02:35:56,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:56,144 INFO L470 AbstractCegarLoop]: Abstraction has 1996 states and 5783 transitions. [2022-01-18 02:35:56,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.258064516129032) internal successors, (132), 31 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 5783 transitions. [2022-01-18 02:35:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:56,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:56,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:56,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 02:35:56,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:56,363 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:56,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:56,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1903997487, now seen corresponding path program 31 times [2022-01-18 02:35:56,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:56,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066708386] [2022-01-18 02:35:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:56,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:56,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:56,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:56,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066708386] [2022-01-18 02:35:56,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066708386] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:56,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056096593] [2022-01-18 02:35:56,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:35:56,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:56,569 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:56,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 02:35:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:56,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:56,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:35:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:57,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:35:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:57,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056096593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:35:57,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:35:57,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:35:57,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105580739] [2022-01-18 02:35:57,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:35:57,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:35:57,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:35:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:35:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:35:57,407 INFO L87 Difference]: Start difference. First operand 1996 states and 5783 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:59,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:35:59,330 INFO L93 Difference]: Finished difference Result 3808 states and 10574 transitions. [2022-01-18 02:35:59,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-18 02:35:59,330 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:35:59,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:35:59,336 INFO L225 Difference]: With dead ends: 3808 [2022-01-18 02:35:59,336 INFO L226 Difference]: Without dead ends: 3529 [2022-01-18 02:35:59,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1600 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1114, Invalid=4738, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 02:35:59,338 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 932 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:35:59,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 2422 Invalid, 1419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:35:59,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3529 states. [2022-01-18 02:35:59,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3529 to 2140. [2022-01-18 02:35:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 2.929873772791024) internal successors, (6267), 2139 states have internal predecessors, (6267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 6267 transitions. [2022-01-18 02:35:59,366 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 6267 transitions. Word has length 69 [2022-01-18 02:35:59,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:35:59,366 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 6267 transitions. [2022-01-18 02:35:59,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:35:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 6267 transitions. [2022-01-18 02:35:59,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:35:59,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:35:59,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:35:59,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 02:35:59,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:59,569 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:35:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:35:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1018159229, now seen corresponding path program 32 times [2022-01-18 02:35:59,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:35:59,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637962807] [2022-01-18 02:35:59,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:35:59,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:35:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:35:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:35:59,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:35:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637962807] [2022-01-18 02:35:59,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637962807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:35:59,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485796536] [2022-01-18 02:35:59,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:35:59,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:35:59,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:35:59,770 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:35:59,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 02:35:59,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:35:59,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:35:59,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:35:59,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:00,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:00,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485796536] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:00,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:00,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-01-18 02:36:00,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094825694] [2022-01-18 02:36:00,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:00,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 02:36:00,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:00,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 02:36:00,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=778, Unknown=0, NotChecked=0, Total=930 [2022-01-18 02:36:00,615 INFO L87 Difference]: Start difference. First operand 2140 states and 6267 transitions. Second operand has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:02,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:02,730 INFO L93 Difference]: Finished difference Result 3721 states and 10301 transitions. [2022-01-18 02:36:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-01-18 02:36:02,730 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:02,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:02,735 INFO L225 Difference]: With dead ends: 3721 [2022-01-18 02:36:02,735 INFO L226 Difference]: Without dead ends: 3442 [2022-01-18 02:36:02,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1263, Invalid=5379, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 02:36:02,736 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 961 mSDsluCounter, 2391 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:02,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 2459 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:36:02,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2022-01-18 02:36:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 1944. [2022-01-18 02:36:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1943 states have (on average 2.8903757076685537) internal successors, (5616), 1943 states have internal predecessors, (5616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:02,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 5616 transitions. [2022-01-18 02:36:02,759 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 5616 transitions. Word has length 69 [2022-01-18 02:36:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:02,760 INFO L470 AbstractCegarLoop]: Abstraction has 1944 states and 5616 transitions. [2022-01-18 02:36:02,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.193548387096774) internal successors, (130), 31 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 5616 transitions. [2022-01-18 02:36:02,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:36:02,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:02,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:02,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:02,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-01-18 02:36:02,963 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:02,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:02,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1255613195, now seen corresponding path program 33 times [2022-01-18 02:36:02,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:02,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078608677] [2022-01-18 02:36:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:02,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:02,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:03,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:03,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078608677] [2022-01-18 02:36:03,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078608677] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:03,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685592457] [2022-01-18 02:36:03,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:36:03,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:03,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:03,131 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:03,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 02:36:03,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:36:03,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:03,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:36:03,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:03,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:03,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685592457] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:03,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:03,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:36:03,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234652153] [2022-01-18 02:36:03,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:03,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:36:03,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:36:03,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:36:03,937 INFO L87 Difference]: Start difference. First operand 1944 states and 5616 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:06,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:06,585 INFO L93 Difference]: Finished difference Result 3735 states and 10356 transitions. [2022-01-18 02:36:06,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 02:36:06,585 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:06,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:06,590 INFO L225 Difference]: With dead ends: 3735 [2022-01-18 02:36:06,590 INFO L226 Difference]: Without dead ends: 3633 [2022-01-18 02:36:06,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2984 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1683, Invalid=7247, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 02:36:06,592 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 782 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:06,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 3057 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:36:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2022-01-18 02:36:06,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 2004. [2022-01-18 02:36:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2004 states, 2003 states have (on average 2.9061407888167747) internal successors, (5821), 2003 states have internal predecessors, (5821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2004 states to 2004 states and 5821 transitions. [2022-01-18 02:36:06,640 INFO L78 Accepts]: Start accepts. Automaton has 2004 states and 5821 transitions. Word has length 69 [2022-01-18 02:36:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:06,640 INFO L470 AbstractCegarLoop]: Abstraction has 2004 states and 5821 transitions. [2022-01-18 02:36:06,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2004 states and 5821 transitions. [2022-01-18 02:36:06,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:36:06,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:06,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:06,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:06,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-18 02:36:06,855 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash 581739939, now seen corresponding path program 34 times [2022-01-18 02:36:06,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:06,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847251385] [2022-01-18 02:36:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:06,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:07,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:07,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847251385] [2022-01-18 02:36:07,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847251385] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535780032] [2022-01-18 02:36:07,029 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:36:07,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:07,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:07,030 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:07,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 02:36:07,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:36:07,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:07,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:36:07,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:07,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:07,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535780032] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:07,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:07,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:36:07,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057258117] [2022-01-18 02:36:07,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:07,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:36:07,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:07,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:36:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=831, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:36:07,762 INFO L87 Difference]: Start difference. First operand 2004 states and 5821 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:10,382 INFO L93 Difference]: Finished difference Result 3591 states and 9886 transitions. [2022-01-18 02:36:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 02:36:10,382 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:10,387 INFO L225 Difference]: With dead ends: 3591 [2022-01-18 02:36:10,388 INFO L226 Difference]: Without dead ends: 3420 [2022-01-18 02:36:10,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2816 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1668, Invalid=7074, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 02:36:10,389 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1043 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:10,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 2374 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:36:10,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3420 states. [2022-01-18 02:36:10,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3420 to 2036. [2022-01-18 02:36:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2036 states, 2035 states have (on average 2.903685503685504) internal successors, (5909), 2035 states have internal predecessors, (5909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 5909 transitions. [2022-01-18 02:36:10,414 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 5909 transitions. Word has length 69 [2022-01-18 02:36:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:10,414 INFO L470 AbstractCegarLoop]: Abstraction has 2036 states and 5909 transitions. [2022-01-18 02:36:10,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 5909 transitions. [2022-01-18 02:36:10,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:36:10,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:10,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:10,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:10,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 02:36:10,618 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:10,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:10,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1899223137, now seen corresponding path program 35 times [2022-01-18 02:36:10,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:10,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639544519] [2022-01-18 02:36:10,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:10,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:10,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:10,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639544519] [2022-01-18 02:36:10,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639544519] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:10,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811480164] [2022-01-18 02:36:10,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:36:10,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:10,768 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:10,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 02:36:10,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:10,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:10,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:36:10,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:11,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:11,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:11,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811480164] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:11,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:11,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:36:11,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992191704] [2022-01-18 02:36:11,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:11,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:36:11,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:11,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:36:11,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:36:11,515 INFO L87 Difference]: Start difference. First operand 2036 states and 5909 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:13,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:13,021 INFO L93 Difference]: Finished difference Result 3197 states and 8830 transitions. [2022-01-18 02:36:13,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:36:13,021 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:13,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:13,026 INFO L225 Difference]: With dead ends: 3197 [2022-01-18 02:36:13,026 INFO L226 Difference]: Without dead ends: 2990 [2022-01-18 02:36:13,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=931, Invalid=4769, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 02:36:13,027 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 644 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:13,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 2155 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:36:13,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2990 states. [2022-01-18 02:36:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2990 to 1933. [2022-01-18 02:36:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 2.8840579710144927) internal successors, (5572), 1932 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 5572 transitions. [2022-01-18 02:36:13,065 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 5572 transitions. Word has length 69 [2022-01-18 02:36:13,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:13,065 INFO L470 AbstractCegarLoop]: Abstraction has 1933 states and 5572 transitions. [2022-01-18 02:36:13,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:13,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 5572 transitions. [2022-01-18 02:36:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:36:13,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:13,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:13,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 02:36:13,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:13,268 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:13,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:13,269 INFO L85 PathProgramCache]: Analyzing trace with hash -555610421, now seen corresponding path program 36 times [2022-01-18 02:36:13,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:13,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107715928] [2022-01-18 02:36:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:13,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:13,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:13,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107715928] [2022-01-18 02:36:13,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107715928] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:13,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370188857] [2022-01-18 02:36:13,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:36:13,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:13,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:13,445 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:13,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 02:36:13,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:36:13,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:36:13,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:13,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:14,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:14,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370188857] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:14,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:14,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:36:14,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986582763] [2022-01-18 02:36:14,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:14,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:36:14,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:36:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:36:14,171 INFO L87 Difference]: Start difference. First operand 1933 states and 5572 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:17,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:17,126 INFO L93 Difference]: Finished difference Result 4414 states and 12245 transitions. [2022-01-18 02:36:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 02:36:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:17,133 INFO L225 Difference]: With dead ends: 4414 [2022-01-18 02:36:17,133 INFO L226 Difference]: Without dead ends: 4312 [2022-01-18 02:36:17,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1894, Invalid=9236, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 02:36:17,134 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 857 mSDsluCounter, 2631 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:17,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 2725 Invalid, 1819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:36:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4312 states. [2022-01-18 02:36:17,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4312 to 2005. [2022-01-18 02:36:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 2.8932135728542914) internal successors, (5798), 2004 states have internal predecessors, (5798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:17,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 5798 transitions. [2022-01-18 02:36:17,174 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 5798 transitions. Word has length 69 [2022-01-18 02:36:17,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:17,174 INFO L470 AbstractCegarLoop]: Abstraction has 2005 states and 5798 transitions. [2022-01-18 02:36:17,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:17,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 5798 transitions. [2022-01-18 02:36:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:36:17,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:17,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:17,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:17,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 02:36:17,400 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:17,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1229483677, now seen corresponding path program 37 times [2022-01-18 02:36:17,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:17,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986669666] [2022-01-18 02:36:17,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:17,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:17,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:17,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986669666] [2022-01-18 02:36:17,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986669666] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:17,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640578486] [2022-01-18 02:36:17,581 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:36:17,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:17,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:17,582 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:17,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 02:36:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:17,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:36:17,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:17,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:18,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640578486] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:18,353 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:18,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:36:18,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047529298] [2022-01-18 02:36:18,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:18,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:36:18,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:36:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:36:18,354 INFO L87 Difference]: Start difference. First operand 2005 states and 5798 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:20,804 INFO L93 Difference]: Finished difference Result 3849 states and 10811 transitions. [2022-01-18 02:36:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 02:36:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:20,810 INFO L225 Difference]: With dead ends: 3849 [2022-01-18 02:36:20,810 INFO L226 Difference]: Without dead ends: 3681 [2022-01-18 02:36:20,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1510, Invalid=7046, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 02:36:20,811 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 675 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 675 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:20,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [675 Valid, 2721 Invalid, 1574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:36:20,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2022-01-18 02:36:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 2001. [2022-01-18 02:36:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 2.8855) internal successors, (5771), 2000 states have internal predecessors, (5771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:20,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 5771 transitions. [2022-01-18 02:36:20,842 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 5771 transitions. Word has length 69 [2022-01-18 02:36:20,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:20,842 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 5771 transitions. [2022-01-18 02:36:20,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 5771 transitions. [2022-01-18 02:36:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:36:20,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:20,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:20,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:21,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 02:36:21,060 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1961445015, now seen corresponding path program 38 times [2022-01-18 02:36:21,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:21,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448004465] [2022-01-18 02:36:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:21,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:21,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:21,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448004465] [2022-01-18 02:36:21,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448004465] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:21,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544977815] [2022-01-18 02:36:21,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:21,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:21,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:21,217 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:21,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 02:36:21,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:21,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:21,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:36:21,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:21,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:22,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544977815] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:22,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:22,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:36:22,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356524683] [2022-01-18 02:36:22,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:22,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:36:22,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:36:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=841, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:36:22,036 INFO L87 Difference]: Start difference. First operand 2001 states and 5771 transitions. Second operand has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:26,439 INFO L93 Difference]: Finished difference Result 4952 states and 13817 transitions. [2022-01-18 02:36:26,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 02:36:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:26,460 INFO L225 Difference]: With dead ends: 4952 [2022-01-18 02:36:26,461 INFO L226 Difference]: Without dead ends: 4799 [2022-01-18 02:36:26,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4246 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2175, Invalid=10481, Unknown=0, NotChecked=0, Total=12656 [2022-01-18 02:36:26,462 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 876 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 3077 SdHoareTripleChecker+Invalid, 2130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:26,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 3077 Invalid, 2130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:36:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-01-18 02:36:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 2409. [2022-01-18 02:36:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 2.933970099667774) internal successors, (7065), 2408 states have internal predecessors, (7065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 7065 transitions. [2022-01-18 02:36:26,506 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 7065 transitions. Word has length 69 [2022-01-18 02:36:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:26,506 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 7065 transitions. [2022-01-18 02:36:26,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.15625) internal successors, (133), 32 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 7065 transitions. [2022-01-18 02:36:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-18 02:36:26,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:26,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:26,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:26,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:26,731 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:26,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1287571759, now seen corresponding path program 39 times [2022-01-18 02:36:26,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:26,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977151102] [2022-01-18 02:36:26,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:26,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:26,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:26,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977151102] [2022-01-18 02:36:26,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977151102] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:26,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522518606] [2022-01-18 02:36:26,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:36:26,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:26,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:26,899 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:26,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 02:36:26,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 02:36:26,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:26,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 02:36:26,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:27,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:27,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:27,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522518606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:27,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:27,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-01-18 02:36:27,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518752125] [2022-01-18 02:36:27,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:27,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 02:36:27,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 02:36:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=839, Unknown=0, NotChecked=0, Total=992 [2022-01-18 02:36:27,714 INFO L87 Difference]: Start difference. First operand 2409 states and 7065 transitions. Second operand has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:30,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:30,093 INFO L93 Difference]: Finished difference Result 4385 states and 12544 transitions. [2022-01-18 02:36:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 02:36:30,093 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-18 02:36:30,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:30,100 INFO L225 Difference]: With dead ends: 4385 [2022-01-18 02:36:30,100 INFO L226 Difference]: Without dead ends: 4151 [2022-01-18 02:36:30,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 119 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2127 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1300, Invalid=5672, Unknown=0, NotChecked=0, Total=6972 [2022-01-18 02:36:30,101 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 788 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 1405 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:30,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [788 Valid, 2504 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1405 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:36:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4151 states. [2022-01-18 02:36:30,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4151 to 2457. [2022-01-18 02:36:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 2456 states have (on average 2.91571661237785) internal successors, (7161), 2456 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 7161 transitions. [2022-01-18 02:36:30,135 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 7161 transitions. Word has length 69 [2022-01-18 02:36:30,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:30,135 INFO L470 AbstractCegarLoop]: Abstraction has 2457 states and 7161 transitions. [2022-01-18 02:36:30,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.09375) internal successors, (131), 32 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 7161 transitions. [2022-01-18 02:36:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:36:30,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:30,138 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:30,154 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 02:36:30,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 02:36:30,339 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1319302325, now seen corresponding path program 40 times [2022-01-18 02:36:30,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:30,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038402118] [2022-01-18 02:36:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:30,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:30,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:30,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038402118] [2022-01-18 02:36:30,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038402118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:30,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747826172] [2022-01-18 02:36:30,573 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:36:30,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:30,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:30,575 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:30,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 02:36:30,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:36:30,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:30,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:36:30,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:31,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:31,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:31,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747826172] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:31,788 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:31,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:36:31,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264493329] [2022-01-18 02:36:31,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:31,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:36:31,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:31,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:36:31,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1460, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:36:31,789 INFO L87 Difference]: Start difference. First operand 2457 states and 7161 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:35,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:35,807 INFO L93 Difference]: Finished difference Result 5078 states and 14210 transitions. [2022-01-18 02:36:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 02:36:35,808 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:36:35,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:35,815 INFO L225 Difference]: With dead ends: 5078 [2022-01-18 02:36:35,815 INFO L226 Difference]: Without dead ends: 4724 [2022-01-18 02:36:35,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5834 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1835, Invalid=16255, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 02:36:35,816 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1692 mSDsluCounter, 4906 mSDsCounter, 0 mSdLazyCounter, 1899 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1692 SdHoareTripleChecker+Valid, 4830 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:35,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1692 Valid, 4830 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1899 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:36:35,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4724 states. [2022-01-18 02:36:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4724 to 2756. [2022-01-18 02:36:35,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2755 states have (on average 2.9288566243194194) internal successors, (8069), 2755 states have internal predecessors, (8069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 8069 transitions. [2022-01-18 02:36:35,857 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 8069 transitions. Word has length 74 [2022-01-18 02:36:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:35,857 INFO L470 AbstractCegarLoop]: Abstraction has 2756 states and 8069 transitions. [2022-01-18 02:36:35,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:35,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 8069 transitions. [2022-01-18 02:36:35,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:36:35,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:35,862 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:35,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:36,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:36,077 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:36,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:36,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1906029941, now seen corresponding path program 41 times [2022-01-18 02:36:36,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:36,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292273681] [2022-01-18 02:36:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:36,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:36,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:36,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292273681] [2022-01-18 02:36:36,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292273681] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:36,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915636013] [2022-01-18 02:36:36,316 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:36:36,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:36,317 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:36,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 02:36:36,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:36:36,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:36,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:36:36,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:36,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:37,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915636013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:37,515 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:37,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:36:37,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768828250] [2022-01-18 02:36:37,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:37,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:36:37,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:36:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:36:37,517 INFO L87 Difference]: Start difference. First operand 2756 states and 8069 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:41,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:41,465 INFO L93 Difference]: Finished difference Result 5564 states and 15546 transitions. [2022-01-18 02:36:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 02:36:41,465 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:36:41,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:41,473 INFO L225 Difference]: With dead ends: 5564 [2022-01-18 02:36:41,473 INFO L226 Difference]: Without dead ends: 5462 [2022-01-18 02:36:41,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4981 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1621, Invalid=14129, Unknown=0, NotChecked=0, Total=15750 [2022-01-18 02:36:41,475 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1330 mSDsluCounter, 5527 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 2589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:41,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 5426 Invalid, 2589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 2405 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:36:41,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5462 states. [2022-01-18 02:36:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5462 to 2856. [2022-01-18 02:36:41,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2856 states, 2855 states have (on average 2.9408056042031525) internal successors, (8396), 2855 states have internal predecessors, (8396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 8396 transitions. [2022-01-18 02:36:41,535 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 8396 transitions. Word has length 74 [2022-01-18 02:36:41,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:41,535 INFO L470 AbstractCegarLoop]: Abstraction has 2856 states and 8396 transitions. [2022-01-18 02:36:41,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 8396 transitions. [2022-01-18 02:36:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:36:41,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:41,539 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:41,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 02:36:41,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:41,739 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:41,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1715064099, now seen corresponding path program 42 times [2022-01-18 02:36:41,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:41,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069204861] [2022-01-18 02:36:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:41,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:41,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:41,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:41,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069204861] [2022-01-18 02:36:41,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069204861] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:41,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191384452] [2022-01-18 02:36:41,939 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:36:41,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:41,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:41,940 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:41,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 02:36:42,004 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:36:42,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:42,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:36:42,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:42,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:43,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191384452] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:43,178 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:43,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:36:43,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754902929] [2022-01-18 02:36:43,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:43,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:36:43,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:36:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:36:43,179 INFO L87 Difference]: Start difference. First operand 2856 states and 8396 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:47,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:47,661 INFO L93 Difference]: Finished difference Result 5008 states and 14002 transitions. [2022-01-18 02:36:47,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 02:36:47,661 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:36:47,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:47,668 INFO L225 Difference]: With dead ends: 5008 [2022-01-18 02:36:47,668 INFO L226 Difference]: Without dead ends: 4840 [2022-01-18 02:36:47,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5624 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1764, Invalid=15528, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 02:36:47,670 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1628 mSDsluCounter, 4718 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 2443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:47,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 4687 Invalid, 2443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:36:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2022-01-18 02:36:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 2824. [2022-01-18 02:36:47,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2824 states, 2823 states have (on average 2.933049946865037) internal successors, (8280), 2823 states have internal predecessors, (8280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2824 states to 2824 states and 8280 transitions. [2022-01-18 02:36:47,713 INFO L78 Accepts]: Start accepts. Automaton has 2824 states and 8280 transitions. Word has length 74 [2022-01-18 02:36:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:47,713 INFO L470 AbstractCegarLoop]: Abstraction has 2824 states and 8280 transitions. [2022-01-18 02:36:47,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2824 states and 8280 transitions. [2022-01-18 02:36:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:36:47,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:47,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:47,733 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 02:36:47,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-01-18 02:36:47,918 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:47,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:47,919 INFO L85 PathProgramCache]: Analyzing trace with hash -69525451, now seen corresponding path program 43 times [2022-01-18 02:36:47,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:47,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884960465] [2022-01-18 02:36:47,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:47,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:48,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:48,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:48,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884960465] [2022-01-18 02:36:48,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884960465] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:48,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408434830] [2022-01-18 02:36:48,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:36:48,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:48,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:48,188 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:48,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 02:36:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:48,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:36:48,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:48,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:48,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:49,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:49,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408434830] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:49,486 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:49,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:36:49,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236710268] [2022-01-18 02:36:49,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:49,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:36:49,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:49,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:36:49,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:36:49,488 INFO L87 Difference]: Start difference. First operand 2824 states and 8280 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:36:54,056 INFO L93 Difference]: Finished difference Result 5999 states and 16712 transitions. [2022-01-18 02:36:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2022-01-18 02:36:54,056 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:36:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:36:54,064 INFO L225 Difference]: With dead ends: 5999 [2022-01-18 02:36:54,064 INFO L226 Difference]: Without dead ends: 5846 [2022-01-18 02:36:54,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6406 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2075, Invalid=17107, Unknown=0, NotChecked=0, Total=19182 [2022-01-18 02:36:54,066 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1390 mSDsluCounter, 5984 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 5899 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:36:54,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 5899 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:36:54,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5846 states. [2022-01-18 02:36:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5846 to 2972. [2022-01-18 02:36:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2971 states have (on average 2.9481656008078088) internal successors, (8759), 2971 states have internal predecessors, (8759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:54,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 8759 transitions. [2022-01-18 02:36:54,114 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 8759 transitions. Word has length 74 [2022-01-18 02:36:54,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:36:54,114 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 8759 transitions. [2022-01-18 02:36:54,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:36:54,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 8759 transitions. [2022-01-18 02:36:54,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:36:54,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:36:54,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:36:54,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 02:36:54,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 02:36:54,318 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:36:54,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:36:54,318 INFO L85 PathProgramCache]: Analyzing trace with hash -743398707, now seen corresponding path program 44 times [2022-01-18 02:36:54,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:36:54,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887121901] [2022-01-18 02:36:54,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:36:54,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:36:54,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:36:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:54,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:36:54,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887121901] [2022-01-18 02:36:54,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887121901] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:36:54,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716458317] [2022-01-18 02:36:54,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:36:54,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:36:54,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:36:54,566 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:36:54,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 02:36:54,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:36:54,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:36:54,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:36:54,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:36:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:55,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:36:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:36:55,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716458317] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:36:55,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:36:55,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:36:55,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62749672] [2022-01-18 02:36:55,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:36:55,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:36:55,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:36:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:36:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:36:55,786 INFO L87 Difference]: Start difference. First operand 2972 states and 8759 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:00,713 INFO L93 Difference]: Finished difference Result 5333 states and 14931 transitions. [2022-01-18 02:37:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 02:37:00,714 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:00,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:00,721 INFO L225 Difference]: With dead ends: 5333 [2022-01-18 02:37:00,721 INFO L226 Difference]: Without dead ends: 5099 [2022-01-18 02:37:00,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7757 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=2381, Invalid=19969, Unknown=0, NotChecked=0, Total=22350 [2022-01-18 02:37:00,723 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 1463 mSDsluCounter, 5182 mSDsCounter, 0 mSdLazyCounter, 2556 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 5130 SdHoareTripleChecker+Invalid, 2748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:00,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1463 Valid, 5130 Invalid, 2748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2556 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:37:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5099 states. [2022-01-18 02:37:00,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5099 to 2852. [2022-01-18 02:37:00,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 2.9354612416695898) internal successors, (8369), 2851 states have internal predecessors, (8369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 8369 transitions. [2022-01-18 02:37:00,760 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 8369 transitions. Word has length 74 [2022-01-18 02:37:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:00,760 INFO L470 AbstractCegarLoop]: Abstraction has 2852 states and 8369 transitions. [2022-01-18 02:37:00,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 8369 transitions. [2022-01-18 02:37:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:00,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:00,764 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:00,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 02:37:00,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 02:37:00,964 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:00,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1084664455, now seen corresponding path program 45 times [2022-01-18 02:37:00,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:00,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887231450] [2022-01-18 02:37:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:00,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:00,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:01,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:01,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887231450] [2022-01-18 02:37:01,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887231450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:01,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439898239] [2022-01-18 02:37:01,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:37:01,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:01,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:01,172 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:01,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 02:37:01,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:37:01,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:01,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:01,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:01,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:02,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439898239] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:02,359 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:02,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:02,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838890046] [2022-01-18 02:37:02,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:02,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:02,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:02,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:02,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1425, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:02,361 INFO L87 Difference]: Start difference. First operand 2852 states and 8369 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:04,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:04,326 INFO L93 Difference]: Finished difference Result 4260 states and 12093 transitions. [2022-01-18 02:37:04,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 02:37:04,326 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:04,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:04,333 INFO L225 Difference]: With dead ends: 4260 [2022-01-18 02:37:04,333 INFO L226 Difference]: Without dead ends: 4158 [2022-01-18 02:37:04,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=873, Invalid=6609, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:37:04,334 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 894 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:04,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 3754 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:37:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4158 states. [2022-01-18 02:37:04,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4158 to 3034. [2022-01-18 02:37:04,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3034 states, 3033 states have (on average 2.945268710847346) internal successors, (8933), 3033 states have internal predecessors, (8933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 8933 transitions. [2022-01-18 02:37:04,375 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 8933 transitions. Word has length 74 [2022-01-18 02:37:04,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:04,375 INFO L470 AbstractCegarLoop]: Abstraction has 3034 states and 8933 transitions. [2022-01-18 02:37:04,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:04,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 8933 transitions. [2022-01-18 02:37:04,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:04,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:04,379 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:04,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:04,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:04,579 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:04,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:04,580 INFO L85 PathProgramCache]: Analyzing trace with hash 440163693, now seen corresponding path program 46 times [2022-01-18 02:37:04,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:04,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393890949] [2022-01-18 02:37:04,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:04,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:04,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:04,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393890949] [2022-01-18 02:37:04,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393890949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:04,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197150975] [2022-01-18 02:37:04,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:37:04,807 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:04,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:04,808 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:04,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 02:37:04,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:37:04,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:04,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:04,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:05,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:05,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:05,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197150975] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:05,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:05,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:05,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136124042] [2022-01-18 02:37:05,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:05,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:05,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:05,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1414, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:05,938 INFO L87 Difference]: Start difference. First operand 3034 states and 8933 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:11,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:11,907 INFO L93 Difference]: Finished difference Result 6528 states and 17989 transitions. [2022-01-18 02:37:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-01-18 02:37:11,907 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:11,917 INFO L225 Difference]: With dead ends: 6528 [2022-01-18 02:37:11,917 INFO L226 Difference]: Without dead ends: 6324 [2022-01-18 02:37:11,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10052 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3586, Invalid=24806, Unknown=0, NotChecked=0, Total=28392 [2022-01-18 02:37:11,920 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 1922 mSDsluCounter, 5963 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1922 SdHoareTripleChecker+Valid, 5937 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:11,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1922 Valid, 5937 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:37:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2022-01-18 02:37:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 3174. [2022-01-18 02:37:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3174 states, 3173 states have (on average 2.970690198550268) internal successors, (9426), 3173 states have internal predecessors, (9426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3174 states to 3174 states and 9426 transitions. [2022-01-18 02:37:12,001 INFO L78 Accepts]: Start accepts. Automaton has 3174 states and 9426 transitions. Word has length 74 [2022-01-18 02:37:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:12,001 INFO L470 AbstractCegarLoop]: Abstraction has 3174 states and 9426 transitions. [2022-01-18 02:37:12,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:12,001 INFO L276 IsEmpty]: Start isEmpty. Operand 3174 states and 9426 transitions. [2022-01-18 02:37:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:12,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:12,007 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:12,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:12,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 02:37:12,207 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:12,208 INFO L85 PathProgramCache]: Analyzing trace with hash -233709563, now seen corresponding path program 47 times [2022-01-18 02:37:12,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:12,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866392746] [2022-01-18 02:37:12,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:12,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:12,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866392746] [2022-01-18 02:37:12,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866392746] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450915395] [2022-01-18 02:37:12,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:37:12,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:12,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:12,460 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:12,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 02:37:12,541 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:37:12,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:12,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:12,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:13,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:13,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450915395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:13,703 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:13,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:13,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850735985] [2022-01-18 02:37:13,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:13,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:13,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:13,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:13,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=1409, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:13,704 INFO L87 Difference]: Start difference. First operand 3174 states and 9426 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:17,839 INFO L93 Difference]: Finished difference Result 5542 states and 15554 transitions. [2022-01-18 02:37:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 02:37:17,839 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:17,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:17,846 INFO L225 Difference]: With dead ends: 5542 [2022-01-18 02:37:17,847 INFO L226 Difference]: Without dead ends: 5182 [2022-01-18 02:37:17,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6118 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2686, Invalid=15674, Unknown=0, NotChecked=0, Total=18360 [2022-01-18 02:37:17,848 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 1553 mSDsluCounter, 4386 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1553 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:17,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1553 Valid, 4333 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:37:17,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2022-01-18 02:37:17,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 3145. [2022-01-18 02:37:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3145 states, 3144 states have (on average 2.9580152671755724) internal successors, (9300), 3144 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 9300 transitions. [2022-01-18 02:37:17,896 INFO L78 Accepts]: Start accepts. Automaton has 3145 states and 9300 transitions. Word has length 74 [2022-01-18 02:37:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:17,896 INFO L470 AbstractCegarLoop]: Abstraction has 3145 states and 9300 transitions. [2022-01-18 02:37:17,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3145 states and 9300 transitions. [2022-01-18 02:37:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:17,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:17,901 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:17,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-01-18 02:37:18,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 02:37:18,101 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:18,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:18,102 INFO L85 PathProgramCache]: Analyzing trace with hash 126938247, now seen corresponding path program 48 times [2022-01-18 02:37:18,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:18,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996513737] [2022-01-18 02:37:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:18,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:18,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:18,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996513737] [2022-01-18 02:37:18,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996513737] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:18,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248737504] [2022-01-18 02:37:18,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:37:18,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:18,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:18,351 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:18,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 02:37:18,431 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:37:18,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:18,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:18,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:18,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:19,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248737504] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:19,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:19,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:19,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75893073] [2022-01-18 02:37:19,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:19,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:19,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:19,574 INFO L87 Difference]: Start difference. First operand 3145 states and 9300 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:25,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:25,344 INFO L93 Difference]: Finished difference Result 6751 states and 18929 transitions. [2022-01-18 02:37:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 02:37:25,345 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:25,354 INFO L225 Difference]: With dead ends: 6751 [2022-01-18 02:37:25,354 INFO L226 Difference]: Without dead ends: 6598 [2022-01-18 02:37:25,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7798 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2198, Invalid=20452, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 02:37:25,355 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 1423 mSDsluCounter, 6159 mSDsCounter, 0 mSdLazyCounter, 3365 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 6129 SdHoareTripleChecker+Invalid, 3544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:25,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1423 Valid, 6129 Invalid, 3544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 3365 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:37:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6598 states. [2022-01-18 02:37:25,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6598 to 3321. [2022-01-18 02:37:25,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3321 states, 3320 states have (on average 2.9819277108433737) internal successors, (9900), 3320 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:25,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 9900 transitions. [2022-01-18 02:37:25,404 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 9900 transitions. Word has length 74 [2022-01-18 02:37:25,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:25,405 INFO L470 AbstractCegarLoop]: Abstraction has 3321 states and 9900 transitions. [2022-01-18 02:37:25,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:25,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 9900 transitions. [2022-01-18 02:37:25,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:25,409 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:25,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:25,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:25,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:25,609 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:25,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash -546935009, now seen corresponding path program 49 times [2022-01-18 02:37:25,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:25,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036075943] [2022-01-18 02:37:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:25,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:25,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036075943] [2022-01-18 02:37:25,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036075943] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:25,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239949343] [2022-01-18 02:37:25,867 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:37:25,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:25,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:25,872 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:25,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 02:37:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:25,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:25,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:26,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:27,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239949343] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:27,124 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:27,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:27,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630011018] [2022-01-18 02:37:27,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:27,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:27,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:27,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:27,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1450, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:27,126 INFO L87 Difference]: Start difference. First operand 3321 states and 9900 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:32,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:32,631 INFO L93 Difference]: Finished difference Result 5917 states and 16625 transitions. [2022-01-18 02:37:32,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-18 02:37:32,632 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:32,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:32,640 INFO L225 Difference]: With dead ends: 5917 [2022-01-18 02:37:32,640 INFO L226 Difference]: Without dead ends: 5674 [2022-01-18 02:37:32,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8089 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2207, Invalid=21049, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 02:37:32,642 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1267 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 6029 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:32,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 6029 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:37:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5674 states. [2022-01-18 02:37:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5674 to 3289. [2022-01-18 02:37:32,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3289 states, 3288 states have (on average 2.9695863746958637) internal successors, (9764), 3288 states have internal predecessors, (9764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:32,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3289 states to 3289 states and 9764 transitions. [2022-01-18 02:37:32,690 INFO L78 Accepts]: Start accepts. Automaton has 3289 states and 9764 transitions. Word has length 74 [2022-01-18 02:37:32,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:32,690 INFO L470 AbstractCegarLoop]: Abstraction has 3289 states and 9764 transitions. [2022-01-18 02:37:32,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:32,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3289 states and 9764 transitions. [2022-01-18 02:37:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:32,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:32,694 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:32,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:32,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-01-18 02:37:32,895 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1507884503, now seen corresponding path program 50 times [2022-01-18 02:37:32,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720756547] [2022-01-18 02:37:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:32,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:33,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:33,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720756547] [2022-01-18 02:37:33,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720756547] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:33,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885418102] [2022-01-18 02:37:33,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:37:33,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:33,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:33,164 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:33,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 02:37:33,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:37:33,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:33,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:33,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:33,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:33,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:34,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:34,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885418102] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:34,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:34,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:34,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286578068] [2022-01-18 02:37:34,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:34,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:34,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:34,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:34,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:34,410 INFO L87 Difference]: Start difference. First operand 3289 states and 9764 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:38,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:38,865 INFO L93 Difference]: Finished difference Result 6358 states and 17923 transitions. [2022-01-18 02:37:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-18 02:37:38,865 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:38,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:38,874 INFO L225 Difference]: With dead ends: 6358 [2022-01-18 02:37:38,874 INFO L226 Difference]: Without dead ends: 6205 [2022-01-18 02:37:38,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5959 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1786, Invalid=16304, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 02:37:38,876 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 1301 mSDsluCounter, 5205 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 5183 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:38,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1301 Valid, 5183 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:37:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2022-01-18 02:37:38,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 3349. [2022-01-18 02:37:38,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3348 states have (on average 2.9811827956989245) internal successors, (9981), 3348 states have internal predecessors, (9981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 9981 transitions. [2022-01-18 02:37:38,925 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 9981 transitions. Word has length 74 [2022-01-18 02:37:38,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:38,925 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 9981 transitions. [2022-01-18 02:37:38,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 9981 transitions. [2022-01-18 02:37:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:38,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:38,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:38,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 02:37:39,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:39,147 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:39,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:39,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2113209537, now seen corresponding path program 51 times [2022-01-18 02:37:39,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:39,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768737614] [2022-01-18 02:37:39,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:39,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:39,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:39,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:39,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768737614] [2022-01-18 02:37:39,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768737614] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:39,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944273848] [2022-01-18 02:37:39,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:37:39,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:39,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:39,416 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:39,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 02:37:39,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:37:39,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:39,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:39,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:40,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:40,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:40,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944273848] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:40,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:40,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:40,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508195430] [2022-01-18 02:37:40,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:40,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:40,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:40,630 INFO L87 Difference]: Start difference. First operand 3349 states and 9981 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:44,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:44,593 INFO L93 Difference]: Finished difference Result 5612 states and 15933 transitions. [2022-01-18 02:37:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 02:37:44,593 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:44,600 INFO L225 Difference]: With dead ends: 5612 [2022-01-18 02:37:44,600 INFO L226 Difference]: Without dead ends: 5369 [2022-01-18 02:37:44,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5344 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1628, Invalid=14884, Unknown=0, NotChecked=0, Total=16512 [2022-01-18 02:37:44,601 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 1106 mSDsluCounter, 5146 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 2758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:44,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1106 Valid, 5155 Invalid, 2758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 2598 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:37:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5369 states. [2022-01-18 02:37:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5369 to 3325. [2022-01-18 02:37:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3325 states, 3324 states have (on average 2.9732250300842358) internal successors, (9883), 3324 states have internal predecessors, (9883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3325 states to 3325 states and 9883 transitions. [2022-01-18 02:37:44,643 INFO L78 Accepts]: Start accepts. Automaton has 3325 states and 9883 transitions. Word has length 74 [2022-01-18 02:37:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:44,644 INFO L470 AbstractCegarLoop]: Abstraction has 3325 states and 9883 transitions. [2022-01-18 02:37:44,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3325 states and 9883 transitions. [2022-01-18 02:37:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:44,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:44,648 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:44,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:44,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 02:37:44,848 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:44,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1327806731, now seen corresponding path program 52 times [2022-01-18 02:37:44,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:44,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261811784] [2022-01-18 02:37:44,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:44,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:45,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:45,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261811784] [2022-01-18 02:37:45,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261811784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:45,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405934131] [2022-01-18 02:37:45,068 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:37:45,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:45,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:45,069 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:45,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 02:37:45,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:37:45,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:45,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:45,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:45,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:46,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405934131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:46,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:46,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:46,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953982841] [2022-01-18 02:37:46,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:46,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:46,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1461, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:46,295 INFO L87 Difference]: Start difference. First operand 3325 states and 9883 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:51,684 INFO L93 Difference]: Finished difference Result 6086 states and 17244 transitions. [2022-01-18 02:37:51,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-01-18 02:37:51,685 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:51,693 INFO L225 Difference]: With dead ends: 6086 [2022-01-18 02:37:51,693 INFO L226 Difference]: Without dead ends: 5873 [2022-01-18 02:37:51,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7977 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2229, Invalid=21027, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 02:37:51,694 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 1228 mSDsluCounter, 4894 mSDsCounter, 0 mSdLazyCounter, 2285 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1228 SdHoareTripleChecker+Valid, 4924 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 2285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:51,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1228 Valid, 4924 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 2285 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:37:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5873 states. [2022-01-18 02:37:51,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5873 to 3509. [2022-01-18 02:37:51,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3508 states have (on average 2.9740592930444696) internal successors, (10433), 3508 states have internal predecessors, (10433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:51,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 10433 transitions. [2022-01-18 02:37:51,747 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 10433 transitions. Word has length 74 [2022-01-18 02:37:51,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:51,747 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 10433 transitions. [2022-01-18 02:37:51,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 10433 transitions. [2022-01-18 02:37:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:51,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:51,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:51,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 02:37:51,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 02:37:51,952 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:51,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash -485881909, now seen corresponding path program 53 times [2022-01-18 02:37:51,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:51,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117180297] [2022-01-18 02:37:51,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:51,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:52,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:52,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:52,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117180297] [2022-01-18 02:37:52,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117180297] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:52,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248003943] [2022-01-18 02:37:52,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:37:52,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:52,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:52,168 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:52,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 02:37:52,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:37:52,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:52,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:52,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:37:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:52,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:37:53,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:53,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248003943] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:37:53,373 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:37:53,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:37:53,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418284873] [2022-01-18 02:37:53,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:37:53,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:37:53,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:37:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:37:53,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1463, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:37:53,374 INFO L87 Difference]: Start difference. First operand 3509 states and 10433 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:59,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:37:59,103 INFO L93 Difference]: Finished difference Result 7054 states and 20040 transitions. [2022-01-18 02:37:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-18 02:37:59,104 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:37:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:37:59,114 INFO L225 Difference]: With dead ends: 7054 [2022-01-18 02:37:59,114 INFO L226 Difference]: Without dead ends: 6901 [2022-01-18 02:37:59,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8492 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=2703, Invalid=21477, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 02:37:59,116 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1230 mSDsluCounter, 7479 mSDsCounter, 0 mSdLazyCounter, 3866 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 7433 SdHoareTripleChecker+Invalid, 4057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 3866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:37:59,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 7433 Invalid, 4057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 3866 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 02:37:59,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6901 states. [2022-01-18 02:37:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6901 to 3597. [2022-01-18 02:37:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 2.981924360400445) internal successors, (10723), 3596 states have internal predecessors, (10723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 10723 transitions. [2022-01-18 02:37:59,199 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 10723 transitions. Word has length 74 [2022-01-18 02:37:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:37:59,199 INFO L470 AbstractCegarLoop]: Abstraction has 3597 states and 10723 transitions. [2022-01-18 02:37:59,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:37:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 10723 transitions. [2022-01-18 02:37:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:37:59,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:37:59,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:37:59,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 02:37:59,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:59,404 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:37:59,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:37:59,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1159755165, now seen corresponding path program 54 times [2022-01-18 02:37:59,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:37:59,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570747760] [2022-01-18 02:37:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:37:59,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:37:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:37:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:37:59,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:37:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570747760] [2022-01-18 02:37:59,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570747760] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:37:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565021319] [2022-01-18 02:37:59,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:37:59,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:37:59,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:37:59,656 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:37:59,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 02:37:59,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:37:59,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:37:59,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:37:59,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:00,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:00,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565021319] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:00,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:00,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:38:00,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594265951] [2022-01-18 02:38:00,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:00,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:38:00,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:00,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:38:00,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1464, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:38:00,931 INFO L87 Difference]: Start difference. First operand 3597 states and 10723 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:06,503 INFO L93 Difference]: Finished difference Result 6511 states and 18544 transitions. [2022-01-18 02:38:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 02:38:06,503 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:06,513 INFO L225 Difference]: With dead ends: 6511 [2022-01-18 02:38:06,513 INFO L226 Difference]: Without dead ends: 6313 [2022-01-18 02:38:06,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9175 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2527, Invalid=23233, Unknown=0, NotChecked=0, Total=25760 [2022-01-18 02:38:06,514 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1272 mSDsluCounter, 5118 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 2784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:06,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 5179 Invalid, 2784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:38:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6313 states. [2022-01-18 02:38:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6313 to 3593. [2022-01-18 02:38:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3592 states have (on average 2.977728285077951) internal successors, (10696), 3592 states have internal predecessors, (10696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 10696 transitions. [2022-01-18 02:38:06,584 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 10696 transitions. Word has length 74 [2022-01-18 02:38:06,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:06,584 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 10696 transitions. [2022-01-18 02:38:06,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:06,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 10696 transitions. [2022-01-18 02:38:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:06,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:06,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:06,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:06,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:06,789 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:06,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:06,790 INFO L85 PathProgramCache]: Analyzing trace with hash -410298985, now seen corresponding path program 55 times [2022-01-18 02:38:06,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:06,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237814072] [2022-01-18 02:38:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:06,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:06,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:06,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237814072] [2022-01-18 02:38:06,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237814072] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:06,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567392256] [2022-01-18 02:38:06,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:38:06,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:06,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:06,977 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:06,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 02:38:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:07,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:07,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:07,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:07,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:08,036 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:08,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567392256] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:08,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:08,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:38:08,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879289103] [2022-01-18 02:38:08,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:08,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:38:08,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:08,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:38:08,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1365, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:38:08,038 INFO L87 Difference]: Start difference. First operand 3593 states and 10696 transitions. Second operand has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:10,427 INFO L93 Difference]: Finished difference Result 5647 states and 16137 transitions. [2022-01-18 02:38:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:38:10,427 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:10,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:10,434 INFO L225 Difference]: With dead ends: 5647 [2022-01-18 02:38:10,435 INFO L226 Difference]: Without dead ends: 5545 [2022-01-18 02:38:10,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3196 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1246, Invalid=9056, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 02:38:10,436 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 931 mSDsluCounter, 4578 mSDsCounter, 0 mSdLazyCounter, 2058 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:10,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [931 Valid, 4545 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2058 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:38:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-01-18 02:38:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 3749. [2022-01-18 02:38:10,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3749 states, 3748 states have (on average 2.9906616862326576) internal successors, (11209), 3748 states have internal predecessors, (11209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:10,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3749 states to 3749 states and 11209 transitions. [2022-01-18 02:38:10,496 INFO L78 Accepts]: Start accepts. Automaton has 3749 states and 11209 transitions. Word has length 74 [2022-01-18 02:38:10,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:10,496 INFO L470 AbstractCegarLoop]: Abstraction has 3749 states and 11209 transitions. [2022-01-18 02:38:10,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.75) internal successors, (150), 40 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states and 11209 transitions. [2022-01-18 02:38:10,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:10,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:10,502 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:10,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:10,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:10,715 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:10,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:10,716 INFO L85 PathProgramCache]: Analyzing trace with hash -389581599, now seen corresponding path program 56 times [2022-01-18 02:38:10,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:10,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873203617] [2022-01-18 02:38:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:10,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:10,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873203617] [2022-01-18 02:38:10,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873203617] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104235063] [2022-01-18 02:38:10,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:38:10,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:10,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:10,904 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:10,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 02:38:10,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:38:10,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:10,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:10,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:11,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:12,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104235063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:12,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:12,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:38:12,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649373579] [2022-01-18 02:38:12,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:12,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:38:12,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:12,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:38:12,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1436, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:38:12,054 INFO L87 Difference]: Start difference. First operand 3749 states and 11209 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:14,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:14,882 INFO L93 Difference]: Finished difference Result 5455 states and 15673 transitions. [2022-01-18 02:38:14,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 02:38:14,882 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:14,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:14,890 INFO L225 Difference]: With dead ends: 5455 [2022-01-18 02:38:14,890 INFO L226 Difference]: Without dead ends: 5353 [2022-01-18 02:38:14,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2678 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1115, Invalid=7815, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 02:38:14,890 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 941 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 4014 SdHoareTripleChecker+Invalid, 1960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:14,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 4014 Invalid, 1960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:38:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5353 states. [2022-01-18 02:38:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5353 to 3777. [2022-01-18 02:38:14,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3777 states, 3776 states have (on average 2.9909957627118646) internal successors, (11294), 3776 states have internal predecessors, (11294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:14,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 11294 transitions. [2022-01-18 02:38:14,937 INFO L78 Accepts]: Start accepts. Automaton has 3777 states and 11294 transitions. Word has length 74 [2022-01-18 02:38:14,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:14,937 INFO L470 AbstractCegarLoop]: Abstraction has 3777 states and 11294 transitions. [2022-01-18 02:38:14,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:14,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3777 states and 11294 transitions. [2022-01-18 02:38:14,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:14,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:14,942 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:14,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 02:38:15,142 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:15,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:15,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1034082361, now seen corresponding path program 57 times [2022-01-18 02:38:15,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:15,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021579562] [2022-01-18 02:38:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:15,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:15,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:15,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021579562] [2022-01-18 02:38:15,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021579562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:15,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386555693] [2022-01-18 02:38:15,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:38:15,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:15,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:15,357 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:15,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 02:38:15,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:38:15,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:15,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:15,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:15,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:16,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386555693] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:16,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:16,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:38:16,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044074463] [2022-01-18 02:38:16,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:16,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:38:16,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:38:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:38:16,410 INFO L87 Difference]: Start difference. First operand 3777 states and 11294 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:23,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:23,775 INFO L93 Difference]: Finished difference Result 8438 states and 23665 transitions. [2022-01-18 02:38:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-01-18 02:38:23,775 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:23,786 INFO L225 Difference]: With dead ends: 8438 [2022-01-18 02:38:23,786 INFO L226 Difference]: Without dead ends: 8204 [2022-01-18 02:38:23,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16868 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=5486, Invalid=38404, Unknown=0, NotChecked=0, Total=43890 [2022-01-18 02:38:23,788 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 2232 mSDsluCounter, 5929 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 5939 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:23,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2232 Valid, 5939 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:38:23,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2022-01-18 02:38:23,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 4045. [2022-01-18 02:38:23,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4045 states, 4044 states have (on average 3.007665677546983) internal successors, (12163), 4044 states have internal predecessors, (12163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4045 states to 4045 states and 12163 transitions. [2022-01-18 02:38:23,864 INFO L78 Accepts]: Start accepts. Automaton has 4045 states and 12163 transitions. Word has length 74 [2022-01-18 02:38:23,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:23,865 INFO L470 AbstractCegarLoop]: Abstraction has 4045 states and 12163 transitions. [2022-01-18 02:38:23,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:23,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4045 states and 12163 transitions. [2022-01-18 02:38:23,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:23,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:23,872 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:23,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:24,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 02:38:24,095 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:24,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1509045113, now seen corresponding path program 58 times [2022-01-18 02:38:24,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:24,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057126403] [2022-01-18 02:38:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:24,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:24,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057126403] [2022-01-18 02:38:24,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057126403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:24,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785577481] [2022-01-18 02:38:24,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:38:24,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:24,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:24,354 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:24,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 02:38:24,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:38:24,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:24,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:24,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:24,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:25,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785577481] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:25,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:25,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:38:25,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898785424] [2022-01-18 02:38:25,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:25,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:38:25,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:25,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:38:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:38:25,605 INFO L87 Difference]: Start difference. First operand 4045 states and 12163 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:32,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:32,706 INFO L93 Difference]: Finished difference Result 8622 states and 24476 transitions. [2022-01-18 02:38:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-01-18 02:38:32,706 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:32,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:32,718 INFO L225 Difference]: With dead ends: 8622 [2022-01-18 02:38:32,718 INFO L226 Difference]: Without dead ends: 8337 [2022-01-18 02:38:32,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12173 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=2808, Invalid=30498, Unknown=0, NotChecked=0, Total=33306 [2022-01-18 02:38:32,719 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1608 mSDsluCounter, 6504 mSDsCounter, 0 mSdLazyCounter, 3310 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 6528 SdHoareTripleChecker+Invalid, 3510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 3310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:32,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 6528 Invalid, 3510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 3310 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:38:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8337 states. [2022-01-18 02:38:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8337 to 4325. [2022-01-18 02:38:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4325 states, 4324 states have (on average 3.027058279370953) internal successors, (13089), 4324 states have internal predecessors, (13089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4325 states to 4325 states and 13089 transitions. [2022-01-18 02:38:32,783 INFO L78 Accepts]: Start accepts. Automaton has 4325 states and 13089 transitions. Word has length 74 [2022-01-18 02:38:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:32,783 INFO L470 AbstractCegarLoop]: Abstraction has 4325 states and 13089 transitions. [2022-01-18 02:38:32,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 4325 states and 13089 transitions. [2022-01-18 02:38:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:32,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:32,788 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:32,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:32,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:32,989 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:32,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:32,989 INFO L85 PathProgramCache]: Analyzing trace with hash 835171857, now seen corresponding path program 59 times [2022-01-18 02:38:32,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:32,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216139482] [2022-01-18 02:38:32,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:32,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:33,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216139482] [2022-01-18 02:38:33,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216139482] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:33,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943063555] [2022-01-18 02:38:33,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:38:33,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:33,214 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:33,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 02:38:33,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:38:33,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:33,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:33,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:33,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:34,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:34,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943063555] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:34,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:34,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:38:34,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526783046] [2022-01-18 02:38:34,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:34,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:38:34,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:38:34,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:38:34,438 INFO L87 Difference]: Start difference. First operand 4325 states and 13089 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:40,732 INFO L93 Difference]: Finished difference Result 7542 states and 21572 transitions. [2022-01-18 02:38:40,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2022-01-18 02:38:40,732 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:40,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:40,742 INFO L225 Difference]: With dead ends: 7542 [2022-01-18 02:38:40,742 INFO L226 Difference]: Without dead ends: 7131 [2022-01-18 02:38:40,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9795 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2682, Invalid=25040, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 02:38:40,744 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1374 mSDsluCounter, 6476 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 6464 SdHoareTripleChecker+Invalid, 3621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:40,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 6464 Invalid, 3621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 3443 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:38:40,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7131 states. [2022-01-18 02:38:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7131 to 4573. [2022-01-18 02:38:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 3.034776902887139) internal successors, (13875), 4572 states have internal predecessors, (13875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 13875 transitions. [2022-01-18 02:38:40,808 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 13875 transitions. Word has length 74 [2022-01-18 02:38:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:40,808 INFO L470 AbstractCegarLoop]: Abstraction has 4573 states and 13875 transitions. [2022-01-18 02:38:40,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 13875 transitions. [2022-01-18 02:38:40,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:40,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:40,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:40,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:41,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:41,014 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash -125777637, now seen corresponding path program 60 times [2022-01-18 02:38:41,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:41,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649704326] [2022-01-18 02:38:41,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:41,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:41,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:41,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649704326] [2022-01-18 02:38:41,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649704326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:41,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400860757] [2022-01-18 02:38:41,233 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:38:41,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:41,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:41,234 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:41,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 02:38:41,309 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:38:41,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:41,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:41,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:41,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:42,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:42,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400860757] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:42,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:42,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:38:42,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938404528] [2022-01-18 02:38:42,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:42,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:38:42,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:42,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:38:42,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:38:42,463 INFO L87 Difference]: Start difference. First operand 4573 states and 13875 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:50,743 INFO L93 Difference]: Finished difference Result 9691 states and 27577 transitions. [2022-01-18 02:38:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-01-18 02:38:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:50,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:50,757 INFO L225 Difference]: With dead ends: 9691 [2022-01-18 02:38:50,757 INFO L226 Difference]: Without dead ends: 9478 [2022-01-18 02:38:50,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15071 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3428, Invalid=36772, Unknown=0, NotChecked=0, Total=40200 [2022-01-18 02:38:50,760 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1816 mSDsluCounter, 8084 mSDsCounter, 0 mSdLazyCounter, 3978 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 7954 SdHoareTripleChecker+Invalid, 4247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 3978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:50,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1816 Valid, 7954 Invalid, 4247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 3978 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:38:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9478 states. [2022-01-18 02:38:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9478 to 4804. [2022-01-18 02:38:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4804 states, 4803 states have (on average 3.047886737455757) internal successors, (14639), 4803 states have internal predecessors, (14639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4804 states to 4804 states and 14639 transitions. [2022-01-18 02:38:50,859 INFO L78 Accepts]: Start accepts. Automaton has 4804 states and 14639 transitions. Word has length 74 [2022-01-18 02:38:50,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:50,859 INFO L470 AbstractCegarLoop]: Abstraction has 4804 states and 14639 transitions. [2022-01-18 02:38:50,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4804 states and 14639 transitions. [2022-01-18 02:38:50,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:50,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:50,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:50,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:51,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:51,067 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash -799650893, now seen corresponding path program 61 times [2022-01-18 02:38:51,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:51,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578088988] [2022-01-18 02:38:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:51,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:51,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:51,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:51,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578088988] [2022-01-18 02:38:51,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578088988] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:51,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066971506] [2022-01-18 02:38:51,294 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:38:51,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:51,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:51,296 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:51,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 02:38:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:51,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:51,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:51,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:38:52,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:52,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066971506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:38:52,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:38:52,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:38:52,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661902677] [2022-01-18 02:38:52,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:38:52,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:38:52,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:38:52,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:38:52,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1451, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:38:52,514 INFO L87 Difference]: Start difference. First operand 4804 states and 14639 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:38:58,496 INFO L93 Difference]: Finished difference Result 7968 states and 22993 transitions. [2022-01-18 02:38:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2022-01-18 02:38:58,496 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:38:58,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:38:58,508 INFO L225 Difference]: With dead ends: 7968 [2022-01-18 02:38:58,509 INFO L226 Difference]: Without dead ends: 7644 [2022-01-18 02:38:58,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9845 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2738, Invalid=25318, Unknown=0, NotChecked=0, Total=28056 [2022-01-18 02:38:58,511 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1519 mSDsluCounter, 5989 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 3442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:38:58,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1519 Valid, 5976 Invalid, 3442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:38:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7644 states. [2022-01-18 02:38:58,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7644 to 4836. [2022-01-18 02:38:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4836 states, 4835 states have (on average 3.050879007238883) internal successors, (14751), 4835 states have internal predecessors, (14751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4836 states to 4836 states and 14751 transitions. [2022-01-18 02:38:58,612 INFO L78 Accepts]: Start accepts. Automaton has 4836 states and 14751 transitions. Word has length 74 [2022-01-18 02:38:58,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:38:58,613 INFO L470 AbstractCegarLoop]: Abstraction has 4836 states and 14751 transitions. [2022-01-18 02:38:58,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:38:58,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4836 states and 14751 transitions. [2022-01-18 02:38:58,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:38:58,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:38:58,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:38:58,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 02:38:58,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:58,821 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:38:58,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:38:58,822 INFO L85 PathProgramCache]: Analyzing trace with hash -537638723, now seen corresponding path program 62 times [2022-01-18 02:38:58,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:38:58,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326559635] [2022-01-18 02:38:58,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:38:58,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:38:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:38:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:59,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:38:59,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326559635] [2022-01-18 02:38:59,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326559635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:38:59,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678308951] [2022-01-18 02:38:59,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:38:59,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:38:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:38:59,047 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:38:59,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 02:38:59,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:38:59,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:38:59,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:38:59,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:38:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:38:59,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:00,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:00,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678308951] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:00,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:00,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:39:00,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399470290] [2022-01-18 02:39:00,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:00,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:39:00,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:39:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:39:00,384 INFO L87 Difference]: Start difference. First operand 4836 states and 14751 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:07,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:07,461 INFO L93 Difference]: Finished difference Result 8123 states and 23369 transitions. [2022-01-18 02:39:07,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-01-18 02:39:07,462 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:39:07,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:07,474 INFO L225 Difference]: With dead ends: 8123 [2022-01-18 02:39:07,474 INFO L226 Difference]: Without dead ends: 7712 [2022-01-18 02:39:07,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11234 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2914, Invalid=28592, Unknown=0, NotChecked=0, Total=31506 [2022-01-18 02:39:07,476 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 1330 mSDsluCounter, 6715 mSDsCounter, 0 mSdLazyCounter, 3500 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 6688 SdHoareTripleChecker+Invalid, 3702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:07,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 6688 Invalid, 3702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3500 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:39:07,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7712 states. [2022-01-18 02:39:07,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7712 to 4848. [2022-01-18 02:39:07,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4848 states, 4847 states have (on average 3.042706828966371) internal successors, (14748), 4847 states have internal predecessors, (14748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4848 states to 4848 states and 14748 transitions. [2022-01-18 02:39:07,547 INFO L78 Accepts]: Start accepts. Automaton has 4848 states and 14748 transitions. Word has length 74 [2022-01-18 02:39:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:07,547 INFO L470 AbstractCegarLoop]: Abstraction has 4848 states and 14748 transitions. [2022-01-18 02:39:07,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:07,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4848 states and 14748 transitions. [2022-01-18 02:39:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:39:07,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:07,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:39:07,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:07,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-01-18 02:39:07,754 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:07,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:07,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2122505823, now seen corresponding path program 63 times [2022-01-18 02:39:07,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:07,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317242665] [2022-01-18 02:39:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:07,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:07,997 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:07,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:07,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317242665] [2022-01-18 02:39:07,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317242665] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:07,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883081293] [2022-01-18 02:39:07,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:39:07,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:07,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:07,998 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:07,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 02:39:08,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:39:08,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:08,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:39:08,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:08,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:09,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883081293] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:09,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:09,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:39:09,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721084685] [2022-01-18 02:39:09,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:09,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:39:09,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:09,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:39:09,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1455, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:39:09,166 INFO L87 Difference]: Start difference. First operand 4848 states and 14748 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:15,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:15,329 INFO L93 Difference]: Finished difference Result 8163 states and 23528 transitions. [2022-01-18 02:39:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-01-18 02:39:15,329 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:39:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:15,341 INFO L225 Difference]: With dead ends: 8163 [2022-01-18 02:39:15,341 INFO L226 Difference]: Without dead ends: 7839 [2022-01-18 02:39:15,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10803 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=2796, Invalid=27654, Unknown=0, NotChecked=0, Total=30450 [2022-01-18 02:39:15,343 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1321 mSDsluCounter, 6664 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 6642 SdHoareTripleChecker+Invalid, 3714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:15,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1321 Valid, 6642 Invalid, 3714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:39:15,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7839 states. [2022-01-18 02:39:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7839 to 4669. [2022-01-18 02:39:15,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4669 states, 4668 states have (on average 3.0366323907455013) internal successors, (14175), 4668 states have internal predecessors, (14175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4669 states to 4669 states and 14175 transitions. [2022-01-18 02:39:15,407 INFO L78 Accepts]: Start accepts. Automaton has 4669 states and 14175 transitions. Word has length 74 [2022-01-18 02:39:15,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:15,407 INFO L470 AbstractCegarLoop]: Abstraction has 4669 states and 14175 transitions. [2022-01-18 02:39:15,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:15,408 INFO L276 IsEmpty]: Start isEmpty. Operand 4669 states and 14175 transitions. [2022-01-18 02:39:15,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:39:15,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:15,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:39:15,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:15,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:15,613 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:15,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1337103017, now seen corresponding path program 64 times [2022-01-18 02:39:15,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:15,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228037231] [2022-01-18 02:39:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:15,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:15,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:15,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228037231] [2022-01-18 02:39:15,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228037231] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:15,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843097708] [2022-01-18 02:39:15,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:39:15,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:15,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:15,826 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:15,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 02:39:15,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:39:15,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:15,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:39:15,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:16,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:16,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:17,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843097708] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:17,032 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:17,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:39:17,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839457837] [2022-01-18 02:39:17,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:17,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:39:17,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:39:17,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1466, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:39:17,033 INFO L87 Difference]: Start difference. First operand 4669 states and 14175 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:22,964 INFO L93 Difference]: Finished difference Result 7668 states and 22189 transitions. [2022-01-18 02:39:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-18 02:39:22,964 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:39:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:22,976 INFO L225 Difference]: With dead ends: 7668 [2022-01-18 02:39:22,976 INFO L226 Difference]: Without dead ends: 7425 [2022-01-18 02:39:22,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9594 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2653, Invalid=24737, Unknown=0, NotChecked=0, Total=27390 [2022-01-18 02:39:22,978 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1220 mSDsluCounter, 4658 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 2532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:22,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 4704 Invalid, 2532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:39:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2022-01-18 02:39:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 4875. [2022-01-18 02:39:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 3.036725482150185) internal successors, (14801), 4874 states have internal predecessors, (14801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:23,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 14801 transitions. [2022-01-18 02:39:23,077 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 14801 transitions. Word has length 74 [2022-01-18 02:39:23,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:23,077 INFO L470 AbstractCegarLoop]: Abstraction has 4875 states and 14801 transitions. [2022-01-18 02:39:23,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 14801 transitions. [2022-01-18 02:39:23,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:39:23,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:23,083 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:39:23,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:23,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-18 02:39:23,284 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:23,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -476585623, now seen corresponding path program 65 times [2022-01-18 02:39:23,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:23,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218042523] [2022-01-18 02:39:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:23,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:23,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218042523] [2022-01-18 02:39:23,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218042523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:23,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302476350] [2022-01-18 02:39:23,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:39:23,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:23,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:23,546 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:23,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 02:39:23,639 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:39:23,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:23,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:39:23,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:24,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:24,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302476350] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:24,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:24,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:39:24,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942474975] [2022-01-18 02:39:24,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:24,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:39:24,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:24,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:39:24,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:39:24,760 INFO L87 Difference]: Start difference. First operand 4875 states and 14801 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:33,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:33,911 INFO L93 Difference]: Finished difference Result 9948 states and 28623 transitions. [2022-01-18 02:39:33,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 202 states. [2022-01-18 02:39:33,911 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:39:33,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:33,926 INFO L225 Difference]: With dead ends: 9948 [2022-01-18 02:39:33,926 INFO L226 Difference]: Without dead ends: 9744 [2022-01-18 02:39:33,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19607 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=4533, Invalid=45419, Unknown=0, NotChecked=0, Total=49952 [2022-01-18 02:39:33,929 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 1260 mSDsluCounter, 9353 mSDsCounter, 0 mSdLazyCounter, 4745 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 9285 SdHoareTripleChecker+Invalid, 4967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 4745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:33,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1260 Valid, 9285 Invalid, 4967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 4745 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 02:39:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9744 states. [2022-01-18 02:39:34,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9744 to 4951. [2022-01-18 02:39:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4951 states, 4950 states have (on average 3.0436363636363635) internal successors, (15066), 4950 states have internal predecessors, (15066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:34,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4951 states to 4951 states and 15066 transitions. [2022-01-18 02:39:34,034 INFO L78 Accepts]: Start accepts. Automaton has 4951 states and 15066 transitions. Word has length 74 [2022-01-18 02:39:34,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:34,034 INFO L470 AbstractCegarLoop]: Abstraction has 4951 states and 15066 transitions. [2022-01-18 02:39:34,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:34,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4951 states and 15066 transitions. [2022-01-18 02:39:34,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:39:34,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:34,040 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:39:34,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:34,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 02:39:34,241 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1150458879, now seen corresponding path program 66 times [2022-01-18 02:39:34,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:34,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134415727] [2022-01-18 02:39:34,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:34,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:34,492 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:34,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:34,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134415727] [2022-01-18 02:39:34,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134415727] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:34,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255049649] [2022-01-18 02:39:34,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:39:34,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:34,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:34,494 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:34,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 02:39:34,575 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:39:34,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:34,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:39:34,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:35,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:35,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:35,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255049649] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:35,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:35,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 41 [2022-01-18 02:39:35,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142109786] [2022-01-18 02:39:35,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:35,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:39:35,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:35,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:39:35,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1469, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:39:35,713 INFO L87 Difference]: Start difference. First operand 4951 states and 15066 transitions. Second operand has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:44,632 INFO L93 Difference]: Finished difference Result 8769 states and 25042 transitions. [2022-01-18 02:39:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-01-18 02:39:44,632 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:39:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:44,645 INFO L225 Difference]: With dead ends: 8769 [2022-01-18 02:39:44,645 INFO L226 Difference]: Without dead ends: 8469 [2022-01-18 02:39:44,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15500 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=3798, Invalid=37614, Unknown=0, NotChecked=0, Total=41412 [2022-01-18 02:39:44,647 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1378 mSDsluCounter, 7225 mSDsCounter, 0 mSdLazyCounter, 3729 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 7216 SdHoareTripleChecker+Invalid, 3951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 3729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:44,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 7216 Invalid, 3951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 3729 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:39:44,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8469 states. [2022-01-18 02:39:44,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8469 to 4907. [2022-01-18 02:39:44,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4907 states, 4906 states have (on average 3.0454545454545454) internal successors, (14941), 4906 states have internal predecessors, (14941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4907 states to 4907 states and 14941 transitions. [2022-01-18 02:39:44,734 INFO L78 Accepts]: Start accepts. Automaton has 4907 states and 14941 transitions. Word has length 74 [2022-01-18 02:39:44,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:44,734 INFO L470 AbstractCegarLoop]: Abstraction has 4907 states and 14941 transitions. [2022-01-18 02:39:44,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.658536585365854) internal successors, (150), 41 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:44,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4907 states and 14941 transitions. [2022-01-18 02:39:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:39:44,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:44,740 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:39:44,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:44,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 02:39:44,940 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:44,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:44,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1173322375, now seen corresponding path program 67 times [2022-01-18 02:39:44,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:44,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67931100] [2022-01-18 02:39:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:44,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:45,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:45,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67931100] [2022-01-18 02:39:45,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67931100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:45,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973432853] [2022-01-18 02:39:45,142 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:39:45,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:45,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:45,143 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:45,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 02:39:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:45,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:39:45,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:45,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:45,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:46,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973432853] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:46,196 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:46,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:39:46,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960677601] [2022-01-18 02:39:46,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:46,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:39:46,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:39:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:39:46,197 INFO L87 Difference]: Start difference. First operand 4907 states and 14941 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:48,846 INFO L93 Difference]: Finished difference Result 7553 states and 22130 transitions. [2022-01-18 02:39:48,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 02:39:48,846 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:39:48,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:48,859 INFO L225 Difference]: With dead ends: 7553 [2022-01-18 02:39:48,859 INFO L226 Difference]: Without dead ends: 7451 [2022-01-18 02:39:48,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1361, Invalid=10411, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 02:39:48,861 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 713 mSDsluCounter, 4538 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:48,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [713 Valid, 4512 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:39:48,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7451 states. [2022-01-18 02:39:48,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7451 to 5079. [2022-01-18 02:39:48,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 5078 states have (on average 3.0496258369436786) internal successors, (15486), 5078 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:48,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 15486 transitions. [2022-01-18 02:39:48,960 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 15486 transitions. Word has length 74 [2022-01-18 02:39:48,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:48,961 INFO L470 AbstractCegarLoop]: Abstraction has 5079 states and 15486 transitions. [2022-01-18 02:39:48,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 15486 transitions. [2022-01-18 02:39:48,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:39:48,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:48,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:39:48,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:49,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 02:39:49,167 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:49,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1152604989, now seen corresponding path program 68 times [2022-01-18 02:39:49,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:49,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023948568] [2022-01-18 02:39:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:49,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:49,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:49,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023948568] [2022-01-18 02:39:49,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023948568] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:49,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876837854] [2022-01-18 02:39:49,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:39:49,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:49,366 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:49,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 02:39:49,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:39:49,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:49,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:39:49,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:49,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:50,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876837854] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:50,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:50,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:39:50,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242686321] [2022-01-18 02:39:50,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:50,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:39:50,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:50,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:39:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:39:50,377 INFO L87 Difference]: Start difference. First operand 5079 states and 15486 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:53,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:39:53,033 INFO L93 Difference]: Finished difference Result 7397 states and 21753 transitions. [2022-01-18 02:39:53,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 02:39:53,033 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:39:53,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:39:53,044 INFO L225 Difference]: With dead ends: 7397 [2022-01-18 02:39:53,045 INFO L226 Difference]: Without dead ends: 7295 [2022-01-18 02:39:53,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3061 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1201, Invalid=8899, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 02:39:53,045 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 805 mSDsluCounter, 4133 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 4139 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:39:53,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 4139 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:39:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7295 states. [2022-01-18 02:39:53,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7295 to 5115. [2022-01-18 02:39:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5115 states, 5114 states have (on average 3.0498631208447398) internal successors, (15597), 5114 states have internal predecessors, (15597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5115 states to 5115 states and 15597 transitions. [2022-01-18 02:39:53,116 INFO L78 Accepts]: Start accepts. Automaton has 5115 states and 15597 transitions. Word has length 74 [2022-01-18 02:39:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:39:53,117 INFO L470 AbstractCegarLoop]: Abstraction has 5115 states and 15597 transitions. [2022-01-18 02:39:53,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:39:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 5115 states and 15597 transitions. [2022-01-18 02:39:53,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:39:53,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:39:53,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:39:53,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 02:39:53,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:53,324 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:39:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:39:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1797105751, now seen corresponding path program 69 times [2022-01-18 02:39:53,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:39:53,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856319564] [2022-01-18 02:39:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:39:53,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:39:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:39:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:53,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:39:53,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856319564] [2022-01-18 02:39:53,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856319564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:39:53,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2577553] [2022-01-18 02:39:53,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:39:53,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:39:53,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:39:53,534 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:39:53,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 02:39:53,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:39:53,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:39:53,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:39:53,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:39:54,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:54,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:39:54,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:39:54,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2577553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:39:54,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:39:54,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:39:54,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835583948] [2022-01-18 02:39:54,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:39:54,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:39:54,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:39:54,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:39:54,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1368, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:39:54,540 INFO L87 Difference]: Start difference. First operand 5115 states and 15597 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:04,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:04,296 INFO L93 Difference]: Finished difference Result 12164 states and 34786 transitions. [2022-01-18 02:40:04,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-01-18 02:40:04,296 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:40:04,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:04,314 INFO L225 Difference]: With dead ends: 12164 [2022-01-18 02:40:04,314 INFO L226 Difference]: Without dead ends: 11747 [2022-01-18 02:40:04,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24035 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=7539, Invalid=54711, Unknown=0, NotChecked=0, Total=62250 [2022-01-18 02:40:04,318 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1819 mSDsluCounter, 9310 mSDsCounter, 0 mSdLazyCounter, 4509 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 9130 SdHoareTripleChecker+Invalid, 4869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 4509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:04,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1819 Valid, 9130 Invalid, 4869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 4509 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 02:40:04,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11747 states. [2022-01-18 02:40:04,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11747 to 5419. [2022-01-18 02:40:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 3.0596160944998156) internal successors, (16577), 5418 states have internal predecessors, (16577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 16577 transitions. [2022-01-18 02:40:04,416 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 16577 transitions. Word has length 74 [2022-01-18 02:40:04,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:04,416 INFO L470 AbstractCegarLoop]: Abstraction has 5419 states and 16577 transitions. [2022-01-18 02:40:04,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:04,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 16577 transitions. [2022-01-18 02:40:04,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:40:04,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:04,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:04,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 02:40:04,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:04,624 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:04,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:04,624 INFO L85 PathProgramCache]: Analyzing trace with hash 746021723, now seen corresponding path program 70 times [2022-01-18 02:40:04,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:04,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134590559] [2022-01-18 02:40:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:04,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:04,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:04,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:04,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:04,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134590559] [2022-01-18 02:40:04,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134590559] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:04,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472428188] [2022-01-18 02:40:04,857 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:40:04,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:04,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:04,858 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:04,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 02:40:04,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:40:04,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:04,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:40:04,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:05,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:05,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:06,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472428188] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:06,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:06,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:40:06,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295040083] [2022-01-18 02:40:06,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:06,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:40:06,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:06,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:40:06,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:40:06,131 INFO L87 Difference]: Start difference. First operand 5419 states and 16577 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:16,777 INFO L93 Difference]: Finished difference Result 12050 states and 34806 transitions. [2022-01-18 02:40:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-01-18 02:40:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:40:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:16,795 INFO L225 Difference]: With dead ends: 12050 [2022-01-18 02:40:16,795 INFO L226 Difference]: Without dead ends: 11654 [2022-01-18 02:40:16,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19156 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3949, Invalid=46003, Unknown=0, NotChecked=0, Total=49952 [2022-01-18 02:40:16,798 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 1659 mSDsluCounter, 7302 mSDsCounter, 0 mSdLazyCounter, 3793 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 7367 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 3793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:16,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 7367 Invalid, 4066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 3793 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:40:16,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11654 states. [2022-01-18 02:40:16,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11654 to 6102. [2022-01-18 02:40:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6102 states, 6101 states have (on average 3.0808064251762004) internal successors, (18796), 6101 states have internal predecessors, (18796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:16,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6102 states to 6102 states and 18796 transitions. [2022-01-18 02:40:16,907 INFO L78 Accepts]: Start accepts. Automaton has 6102 states and 18796 transitions. Word has length 74 [2022-01-18 02:40:16,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:16,907 INFO L470 AbstractCegarLoop]: Abstraction has 6102 states and 18796 transitions. [2022-01-18 02:40:16,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:16,908 INFO L276 IsEmpty]: Start isEmpty. Operand 6102 states and 18796 transitions. [2022-01-18 02:40:16,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:40:16,915 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:16,915 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:16,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 02:40:17,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:17,117 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:17,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:17,118 INFO L85 PathProgramCache]: Analyzing trace with hash 72148467, now seen corresponding path program 71 times [2022-01-18 02:40:17,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:17,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770216610] [2022-01-18 02:40:17,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:17,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:17,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:17,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770216610] [2022-01-18 02:40:17,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770216610] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:17,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456083950] [2022-01-18 02:40:17,376 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:40:17,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:17,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:17,380 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:17,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 02:40:17,473 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:40:17,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:17,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:40:17,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:18,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:18,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:18,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456083950] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:18,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:18,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:40:18,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440668113] [2022-01-18 02:40:18,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:18,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:40:18,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:18,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:40:18,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:40:18,681 INFO L87 Difference]: Start difference. First operand 6102 states and 18796 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:27,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:27,794 INFO L93 Difference]: Finished difference Result 12376 states and 36090 transitions. [2022-01-18 02:40:27,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-01-18 02:40:27,794 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:40:27,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:27,814 INFO L225 Difference]: With dead ends: 12376 [2022-01-18 02:40:27,815 INFO L226 Difference]: Without dead ends: 11845 [2022-01-18 02:40:27,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17065 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3982, Invalid=41174, Unknown=0, NotChecked=0, Total=45156 [2022-01-18 02:40:27,818 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 1304 mSDsluCounter, 7307 mSDsCounter, 0 mSdLazyCounter, 4021 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 7291 SdHoareTripleChecker+Invalid, 4251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 4021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:27,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 7291 Invalid, 4251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 4021 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:40:27,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11845 states. [2022-01-18 02:40:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11845 to 6710. [2022-01-18 02:40:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 6709 states have (on average 3.0997167983306007) internal successors, (20796), 6709 states have internal predecessors, (20796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 20796 transitions. [2022-01-18 02:40:27,940 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 20796 transitions. Word has length 74 [2022-01-18 02:40:27,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:27,940 INFO L470 AbstractCegarLoop]: Abstraction has 6710 states and 20796 transitions. [2022-01-18 02:40:27,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 20796 transitions. [2022-01-18 02:40:27,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:40:27,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:27,949 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:27,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 02:40:28,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-01-18 02:40:28,150 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:28,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1300662113, now seen corresponding path program 72 times [2022-01-18 02:40:28,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:28,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968277696] [2022-01-18 02:40:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:28,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:28,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:28,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:28,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968277696] [2022-01-18 02:40:28,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968277696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:28,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50585573] [2022-01-18 02:40:28,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:40:28,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:28,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:28,359 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:28,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 02:40:28,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:40:28,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:28,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:40:28,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:28,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:29,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:29,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50585573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:29,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:29,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:40:29,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576248351] [2022-01-18 02:40:29,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:29,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:40:29,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:40:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1392, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:40:29,648 INFO L87 Difference]: Start difference. First operand 6710 states and 20796 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:38,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:38,992 INFO L93 Difference]: Finished difference Result 12204 states and 35577 transitions. [2022-01-18 02:40:38,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-01-18 02:40:38,993 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:40:38,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:39,012 INFO L225 Difference]: With dead ends: 12204 [2022-01-18 02:40:39,012 INFO L226 Difference]: Without dead ends: 11778 [2022-01-18 02:40:39,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17311 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=3918, Invalid=42092, Unknown=0, NotChecked=0, Total=46010 [2022-01-18 02:40:39,014 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1470 mSDsluCounter, 6188 mSDsCounter, 0 mSdLazyCounter, 3405 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 3655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 3405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:39,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 6251 Invalid, 3655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 3405 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:40:39,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11778 states. [2022-01-18 02:40:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11778 to 6411. [2022-01-18 02:40:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 3.088455538221529) internal successors, (19797), 6410 states have internal predecessors, (19797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 19797 transitions. [2022-01-18 02:40:39,135 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 19797 transitions. Word has length 74 [2022-01-18 02:40:39,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:39,135 INFO L470 AbstractCegarLoop]: Abstraction has 6411 states and 19797 transitions. [2022-01-18 02:40:39,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 19797 transitions. [2022-01-18 02:40:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:40:39,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:39,144 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:39,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 02:40:39,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:39,345 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash 574079627, now seen corresponding path program 73 times [2022-01-18 02:40:39,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:39,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029050834] [2022-01-18 02:40:39,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:39,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:39,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:39,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:39,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029050834] [2022-01-18 02:40:39,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029050834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:39,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488127114] [2022-01-18 02:40:39,550 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:40:39,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:39,551 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:39,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 02:40:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:39,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:40:39,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:40,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:40,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488127114] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:40,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:40,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:40:40,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334040460] [2022-01-18 02:40:40,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:40,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:40:40,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:40,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:40:40,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1400, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:40:40,765 INFO L87 Difference]: Start difference. First operand 6411 states and 19797 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:40:48,298 INFO L93 Difference]: Finished difference Result 11326 states and 33741 transitions. [2022-01-18 02:40:48,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-18 02:40:48,298 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:40:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:40:48,316 INFO L225 Difference]: With dead ends: 11326 [2022-01-18 02:40:48,317 INFO L226 Difference]: Without dead ends: 11113 [2022-01-18 02:40:48,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13254 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=3326, Invalid=32964, Unknown=0, NotChecked=0, Total=36290 [2022-01-18 02:40:48,319 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 1062 mSDsluCounter, 5329 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 5364 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:40:48,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1062 Valid, 5364 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:40:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11113 states. [2022-01-18 02:40:48,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11113 to 6907. [2022-01-18 02:40:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 6906 states have (on average 3.08673617144512) internal successors, (21317), 6906 states have internal predecessors, (21317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 21317 transitions. [2022-01-18 02:40:48,442 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 21317 transitions. Word has length 74 [2022-01-18 02:40:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:40:48,442 INFO L470 AbstractCegarLoop]: Abstraction has 6907 states and 21317 transitions. [2022-01-18 02:40:48,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:40:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 21317 transitions. [2022-01-18 02:40:48,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:40:48,451 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:40:48,451 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:40:48,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-01-18 02:40:48,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:48,652 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:40:48,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:40:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1239609013, now seen corresponding path program 74 times [2022-01-18 02:40:48,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:40:48,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315263949] [2022-01-18 02:40:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:40:48,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:40:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:40:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:48,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:40:48,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315263949] [2022-01-18 02:40:48,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315263949] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:40:48,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315028859] [2022-01-18 02:40:48,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:40:48,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:40:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:40:48,860 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:40:48,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 02:40:48,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:40:48,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:40:48,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:40:48,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:40:49,406 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:49,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:40:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:40:50,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315028859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:40:50,042 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:40:50,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:40:50,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031284701] [2022-01-18 02:40:50,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:40:50,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:40:50,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:40:50,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:40:50,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:40:50,043 INFO L87 Difference]: Start difference. First operand 6907 states and 21317 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:01,033 INFO L93 Difference]: Finished difference Result 14462 states and 42857 transitions. [2022-01-18 02:41:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 02:41:01,034 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:41:01,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:01,057 INFO L225 Difference]: With dead ends: 14462 [2022-01-18 02:41:01,057 INFO L226 Difference]: Without dead ends: 14258 [2022-01-18 02:41:01,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23027 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=5051, Invalid=53755, Unknown=0, NotChecked=0, Total=58806 [2022-01-18 02:41:01,060 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 1347 mSDsluCounter, 7440 mSDsCounter, 0 mSdLazyCounter, 4124 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 7493 SdHoareTripleChecker+Invalid, 4359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 4124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:01,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 7493 Invalid, 4359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 4124 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 02:41:01,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14258 states. [2022-01-18 02:41:01,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14258 to 7235. [2022-01-18 02:41:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7235 states, 7234 states have (on average 3.1112800663533315) internal successors, (22507), 7234 states have internal predecessors, (22507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7235 states to 7235 states and 22507 transitions. [2022-01-18 02:41:01,196 INFO L78 Accepts]: Start accepts. Automaton has 7235 states and 22507 transitions. Word has length 74 [2022-01-18 02:41:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:01,196 INFO L470 AbstractCegarLoop]: Abstraction has 7235 states and 22507 transitions. [2022-01-18 02:41:01,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 7235 states and 22507 transitions. [2022-01-18 02:41:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:41:01,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:01,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:01,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 02:41:01,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-01-18 02:41:01,415 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:01,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:01,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1913482269, now seen corresponding path program 75 times [2022-01-18 02:41:01,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:01,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264955922] [2022-01-18 02:41:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:01,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:01,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:01,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:01,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264955922] [2022-01-18 02:41:01,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264955922] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:01,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221378918] [2022-01-18 02:41:01,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:41:01,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:01,672 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:01,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 02:41:01,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:41:01,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:01,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 02:41:01,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:02,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:02,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:03,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221378918] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:03,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:03,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-01-18 02:41:03,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286554429] [2022-01-18 02:41:03,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:03,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 02:41:03,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:03,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 02:41:03,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 02:41:03,496 INFO L87 Difference]: Start difference. First operand 7235 states and 22507 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:14,870 INFO L93 Difference]: Finished difference Result 12632 states and 37409 transitions. [2022-01-18 02:41:14,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-01-18 02:41:14,870 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:41:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:14,901 INFO L225 Difference]: With dead ends: 12632 [2022-01-18 02:41:14,901 INFO L226 Difference]: Without dead ends: 12449 [2022-01-18 02:41:14,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15625 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4664, Invalid=38808, Unknown=0, NotChecked=0, Total=43472 [2022-01-18 02:41:14,904 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1671 mSDsluCounter, 6439 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 6319 SdHoareTripleChecker+Invalid, 4110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:14,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1671 Valid, 6319 Invalid, 4110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:41:14,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-01-18 02:41:15,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 7219. [2022-01-18 02:41:15,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7219 states, 7218 states have (on average 3.1115267387087835) internal successors, (22459), 7218 states have internal predecessors, (22459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:15,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7219 states to 7219 states and 22459 transitions. [2022-01-18 02:41:15,028 INFO L78 Accepts]: Start accepts. Automaton has 7219 states and 22459 transitions. Word has length 74 [2022-01-18 02:41:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:15,028 INFO L470 AbstractCegarLoop]: Abstraction has 7219 states and 22459 transitions. [2022-01-18 02:41:15,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 7219 states and 22459 transitions. [2022-01-18 02:41:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:41:15,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:15,072 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:15,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 02:41:15,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 02:41:15,273 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:15,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:15,273 INFO L85 PathProgramCache]: Analyzing trace with hash 746662277, now seen corresponding path program 76 times [2022-01-18 02:41:15,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:15,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968229959] [2022-01-18 02:41:15,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:15,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:15,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:15,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968229959] [2022-01-18 02:41:15,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968229959] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:15,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427975541] [2022-01-18 02:41:15,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:41:15,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:15,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:15,497 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:15,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 02:41:15,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:41:15,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:15,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:41:15,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:16,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:16,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:16,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427975541] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:16,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:16,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:41:16,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257717559] [2022-01-18 02:41:16,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:16,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:41:16,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:16,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:41:16,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1398, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:41:16,721 INFO L87 Difference]: Start difference. First operand 7219 states and 22459 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:25,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:25,437 INFO L93 Difference]: Finished difference Result 12840 states and 38579 transitions. [2022-01-18 02:41:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-01-18 02:41:25,438 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:41:25,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:25,461 INFO L225 Difference]: With dead ends: 12840 [2022-01-18 02:41:25,461 INFO L226 Difference]: Without dead ends: 12441 [2022-01-18 02:41:25,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17130 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=4124, Invalid=41458, Unknown=0, NotChecked=0, Total=45582 [2022-01-18 02:41:25,464 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1071 mSDsluCounter, 8074 mSDsCounter, 0 mSdLazyCounter, 4317 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 8024 SdHoareTripleChecker+Invalid, 4540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 4317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:25,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 8024 Invalid, 4540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 4317 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 02:41:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12441 states. [2022-01-18 02:41:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12441 to 7791. [2022-01-18 02:41:25,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 7790 states have (on average 3.1296534017971758) internal successors, (24380), 7790 states have internal predecessors, (24380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 24380 transitions. [2022-01-18 02:41:25,593 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 24380 transitions. Word has length 74 [2022-01-18 02:41:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:25,593 INFO L470 AbstractCegarLoop]: Abstraction has 7791 states and 24380 transitions. [2022-01-18 02:41:25,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 24380 transitions. [2022-01-18 02:41:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:41:25,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:25,603 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:25,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-01-18 02:41:25,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:25,804 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:25,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:25,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1031249583, now seen corresponding path program 77 times [2022-01-18 02:41:25,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:25,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344380771] [2022-01-18 02:41:25,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:25,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:26,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344380771] [2022-01-18 02:41:26,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344380771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864271289] [2022-01-18 02:41:26,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:41:26,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:26,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:26,024 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:26,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 02:41:26,106 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:41:26,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:26,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:41:26,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:26,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:27,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:27,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864271289] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:27,203 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:27,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:41:27,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460954070] [2022-01-18 02:41:27,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:27,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:41:27,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:27,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:41:27,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:41:27,204 INFO L87 Difference]: Start difference. First operand 7791 states and 24380 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:34,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:34,573 INFO L93 Difference]: Finished difference Result 13445 states and 40428 transitions. [2022-01-18 02:41:34,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-01-18 02:41:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:41:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:34,596 INFO L225 Difference]: With dead ends: 13445 [2022-01-18 02:41:34,596 INFO L226 Difference]: Without dead ends: 12920 [2022-01-18 02:41:34,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13023 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3158, Invalid=32752, Unknown=0, NotChecked=0, Total=35910 [2022-01-18 02:41:34,598 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1273 mSDsluCounter, 7442 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 7394 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:34,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1273 Valid, 7394 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:41:34,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12920 states. [2022-01-18 02:41:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12920 to 7963. [2022-01-18 02:41:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7963 states, 7962 states have (on average 3.12597337352424) internal successors, (24889), 7962 states have internal predecessors, (24889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7963 states to 7963 states and 24889 transitions. [2022-01-18 02:41:34,738 INFO L78 Accepts]: Start accepts. Automaton has 7963 states and 24889 transitions. Word has length 74 [2022-01-18 02:41:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:34,738 INFO L470 AbstractCegarLoop]: Abstraction has 7963 states and 24889 transitions. [2022-01-18 02:41:34,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:34,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7963 states and 24889 transitions. [2022-01-18 02:41:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:41:34,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:34,749 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:34,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-18 02:41:34,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:34,950 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:34,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1668906567, now seen corresponding path program 78 times [2022-01-18 02:41:34,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:34,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494386330] [2022-01-18 02:41:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:34,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:35,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:35,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494386330] [2022-01-18 02:41:35,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494386330] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:35,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829655021] [2022-01-18 02:41:35,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:41:35,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:35,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:35,166 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:35,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 02:41:35,248 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:41:35,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:35,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:41:35,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:35,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:36,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829655021] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:36,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:36,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-01-18 02:41:36,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819732797] [2022-01-18 02:41:36,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:36,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:41:36,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:36,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:41:36,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:41:36,224 INFO L87 Difference]: Start difference. First operand 7963 states and 24889 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:39,005 INFO L93 Difference]: Finished difference Result 11229 states and 33866 transitions. [2022-01-18 02:41:39,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 02:41:39,005 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:41:39,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:39,032 INFO L225 Difference]: With dead ends: 11229 [2022-01-18 02:41:39,033 INFO L226 Difference]: Without dead ends: 11127 [2022-01-18 02:41:39,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3775 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1421, Invalid=10351, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 02:41:39,034 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 823 mSDsluCounter, 3426 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:39,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 3466 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:41:39,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11127 states. [2022-01-18 02:41:39,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11127 to 8027. [2022-01-18 02:41:39,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8027 states, 8026 states have (on average 3.128457513082482) internal successors, (25109), 8026 states have internal predecessors, (25109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8027 states to 8027 states and 25109 transitions. [2022-01-18 02:41:39,228 INFO L78 Accepts]: Start accepts. Automaton has 8027 states and 25109 transitions. Word has length 74 [2022-01-18 02:41:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:39,228 INFO L470 AbstractCegarLoop]: Abstraction has 8027 states and 25109 transitions. [2022-01-18 02:41:39,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 8027 states and 25109 transitions. [2022-01-18 02:41:39,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:41:39,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:39,239 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:39,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-01-18 02:41:39,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:39,440 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:39,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1648189181, now seen corresponding path program 79 times [2022-01-18 02:41:39,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:39,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621225173] [2022-01-18 02:41:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:39,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:39,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:39,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621225173] [2022-01-18 02:41:39,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621225173] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:39,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112025569] [2022-01-18 02:41:39,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:41:39,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:39,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:39,643 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:39,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 02:41:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:39,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:41:39,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:40,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:40,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:40,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112025569] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:40,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:40,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:41:40,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008395125] [2022-01-18 02:41:40,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:40,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:41:40,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:41:40,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:41:40,667 INFO L87 Difference]: Start difference. First operand 8027 states and 25109 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:43,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:43,700 INFO L93 Difference]: Finished difference Result 11073 states and 33489 transitions. [2022-01-18 02:41:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 02:41:43,700 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:41:43,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:43,729 INFO L225 Difference]: With dead ends: 11073 [2022-01-18 02:41:43,729 INFO L226 Difference]: Without dead ends: 10971 [2022-01-18 02:41:43,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3157 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1322, Invalid=8980, Unknown=0, NotChecked=0, Total=10302 [2022-01-18 02:41:43,730 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 775 mSDsluCounter, 4293 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 4282 SdHoareTripleChecker+Invalid, 2144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:43,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 4282 Invalid, 2144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:41:43,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10971 states. [2022-01-18 02:41:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10971 to 8047. [2022-01-18 02:41:43,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8047 states, 8046 states have (on average 3.129008202833706) internal successors, (25176), 8046 states have internal predecessors, (25176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8047 states to 8047 states and 25176 transitions. [2022-01-18 02:41:43,883 INFO L78 Accepts]: Start accepts. Automaton has 8047 states and 25176 transitions. Word has length 74 [2022-01-18 02:41:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:43,883 INFO L470 AbstractCegarLoop]: Abstraction has 8047 states and 25176 transitions. [2022-01-18 02:41:43,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 8047 states and 25176 transitions. [2022-01-18 02:41:43,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:41:43,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:43,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:43,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 02:41:44,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:44,095 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:44,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:44,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2002277353, now seen corresponding path program 80 times [2022-01-18 02:41:44,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:44,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823685097] [2022-01-18 02:41:44,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:44,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:44,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:44,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823685097] [2022-01-18 02:41:44,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823685097] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:44,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642337887] [2022-01-18 02:41:44,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:41:44,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:44,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:44,301 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:44,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 02:41:44,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:41:44,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:44,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:41:44,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:44,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:45,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642337887] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:45,331 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:45,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:41:45,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458075715] [2022-01-18 02:41:45,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:45,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:41:45,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:45,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:41:45,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1295, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:41:45,332 INFO L87 Difference]: Start difference. First operand 8047 states and 25176 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:41:55,468 INFO L93 Difference]: Finished difference Result 16319 states and 48104 transitions. [2022-01-18 02:41:55,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2022-01-18 02:41:55,468 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:41:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:41:55,507 INFO L225 Difference]: With dead ends: 16319 [2022-01-18 02:41:55,508 INFO L226 Difference]: Without dead ends: 15821 [2022-01-18 02:41:55,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24168 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=7498, Invalid=54752, Unknown=0, NotChecked=0, Total=62250 [2022-01-18 02:41:55,511 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 1660 mSDsluCounter, 8463 mSDsCounter, 0 mSdLazyCounter, 4194 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1660 SdHoareTripleChecker+Valid, 8337 SdHoareTripleChecker+Invalid, 4531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 4194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:41:55,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1660 Valid, 8337 Invalid, 4531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 4194 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 02:41:55,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15821 states. [2022-01-18 02:41:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15821 to 8199. [2022-01-18 02:41:55,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8199 states, 8198 states have (on average 3.1278360575750184) internal successors, (25642), 8198 states have internal predecessors, (25642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:55,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8199 states to 8199 states and 25642 transitions. [2022-01-18 02:41:55,685 INFO L78 Accepts]: Start accepts. Automaton has 8199 states and 25642 transitions. Word has length 74 [2022-01-18 02:41:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:41:55,685 INFO L470 AbstractCegarLoop]: Abstraction has 8199 states and 25642 transitions. [2022-01-18 02:41:55,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:41:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8199 states and 25642 transitions. [2022-01-18 02:41:55,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:41:55,697 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:41:55,697 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:41:55,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 02:41:55,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:55,898 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:41:55,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:41:55,898 INFO L85 PathProgramCache]: Analyzing trace with hash 250437531, now seen corresponding path program 81 times [2022-01-18 02:41:55,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:41:55,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026906976] [2022-01-18 02:41:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:41:55,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:41:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:41:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:56,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:41:56,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026906976] [2022-01-18 02:41:56,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026906976] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:41:56,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649325311] [2022-01-18 02:41:56,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:41:56,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:41:56,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:41:56,101 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:41:56,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 02:41:56,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:41:56,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:41:56,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 02:41:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:41:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:56,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:41:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:41:58,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649325311] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:41:58,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:41:58,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 20] total 48 [2022-01-18 02:41:58,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891645503] [2022-01-18 02:41:58,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:41:58,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 02:41:58,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:41:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 02:41:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2045, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 02:41:58,164 INFO L87 Difference]: Start difference. First operand 8199 states and 25642 transitions. Second operand has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:05,107 INFO L93 Difference]: Finished difference Result 13607 states and 41214 transitions. [2022-01-18 02:42:05,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-01-18 02:42:05,107 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:05,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:05,137 INFO L225 Difference]: With dead ends: 13607 [2022-01-18 02:42:05,137 INFO L226 Difference]: Without dead ends: 13505 [2022-01-18 02:42:05,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7512 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2252, Invalid=20398, Unknown=0, NotChecked=0, Total=22650 [2022-01-18 02:42:05,139 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 1333 mSDsluCounter, 4765 mSDsCounter, 0 mSdLazyCounter, 2632 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 4743 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:05,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 4743 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2632 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:42:05,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13505 states. [2022-01-18 02:42:05,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13505 to 8271. [2022-01-18 02:42:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8271 states, 8270 states have (on average 3.1279322853688027) internal successors, (25868), 8270 states have internal predecessors, (25868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 25868 transitions. [2022-01-18 02:42:05,315 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 25868 transitions. Word has length 74 [2022-01-18 02:42:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:05,316 INFO L470 AbstractCegarLoop]: Abstraction has 8271 states and 25868 transitions. [2022-01-18 02:42:05,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.5208333333333335) internal successors, (169), 48 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 25868 transitions. [2022-01-18 02:42:05,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:05,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:05,326 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:05,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:05,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2022-01-18 02:42:05,527 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:05,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1384385219, now seen corresponding path program 82 times [2022-01-18 02:42:05,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:05,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050109505] [2022-01-18 02:42:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:05,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:05,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050109505] [2022-01-18 02:42:05,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050109505] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:05,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752458683] [2022-01-18 02:42:05,731 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:42:05,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:05,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:05,732 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:05,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 02:42:05,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:42:05,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:05,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:05,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:06,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:06,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752458683] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:06,971 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:06,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:42:06,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477256019] [2022-01-18 02:42:06,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:06,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:42:06,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:06,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:42:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1324, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:42:06,973 INFO L87 Difference]: Start difference. First operand 8271 states and 25868 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:14,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:14,916 INFO L93 Difference]: Finished difference Result 14185 states and 42493 transitions. [2022-01-18 02:42:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-01-18 02:42:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:14,947 INFO L225 Difference]: With dead ends: 14185 [2022-01-18 02:42:14,947 INFO L226 Difference]: Without dead ends: 14032 [2022-01-18 02:42:14,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11407 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=2992, Invalid=28514, Unknown=0, NotChecked=0, Total=31506 [2022-01-18 02:42:14,950 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 1206 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 2790 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 5016 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:14,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 5016 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2790 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:42:14,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2022-01-18 02:42:15,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 8675. [2022-01-18 02:42:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8675 states, 8674 states have (on average 3.1154023518561216) internal successors, (27023), 8674 states have internal predecessors, (27023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8675 states to 8675 states and 27023 transitions. [2022-01-18 02:42:15,171 INFO L78 Accepts]: Start accepts. Automaton has 8675 states and 27023 transitions. Word has length 74 [2022-01-18 02:42:15,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:15,171 INFO L470 AbstractCegarLoop]: Abstraction has 8675 states and 27023 transitions. [2022-01-18 02:42:15,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:15,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8675 states and 27023 transitions. [2022-01-18 02:42:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:15,187 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:15,187 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:15,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:15,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:15,411 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:15,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:15,412 INFO L85 PathProgramCache]: Analyzing trace with hash -270174689, now seen corresponding path program 83 times [2022-01-18 02:42:15,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:15,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972545489] [2022-01-18 02:42:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:15,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:15,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:15,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972545489] [2022-01-18 02:42:15,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972545489] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:15,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111947005] [2022-01-18 02:42:15,652 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:42:15,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:15,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:15,653 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:15,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 02:42:15,735 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:42:15,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:15,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:15,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:16,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:16,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111947005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:16,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:16,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:42:16,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677732686] [2022-01-18 02:42:16,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:16,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:42:16,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:16,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:42:16,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1293, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:42:16,637 INFO L87 Difference]: Start difference. First operand 8675 states and 27023 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:20,379 INFO L93 Difference]: Finished difference Result 12515 states and 37548 transitions. [2022-01-18 02:42:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-18 02:42:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:20,410 INFO L225 Difference]: With dead ends: 12515 [2022-01-18 02:42:20,410 INFO L226 Difference]: Without dead ends: 12041 [2022-01-18 02:42:20,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6139 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2533, Invalid=16099, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 02:42:20,412 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 1769 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 4651 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:20,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 4651 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:42:20,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12041 states. [2022-01-18 02:42:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12041 to 9191. [2022-01-18 02:42:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9191 states, 9190 states have (on average 3.108378672470076) internal successors, (28566), 9190 states have internal predecessors, (28566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9191 states to 9191 states and 28566 transitions. [2022-01-18 02:42:20,601 INFO L78 Accepts]: Start accepts. Automaton has 9191 states and 28566 transitions. Word has length 74 [2022-01-18 02:42:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:20,601 INFO L470 AbstractCegarLoop]: Abstraction has 9191 states and 28566 transitions. [2022-01-18 02:42:20,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9191 states and 28566 transitions. [2022-01-18 02:42:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:20,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:20,614 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:20,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:20,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:20,815 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1690876699, now seen corresponding path program 84 times [2022-01-18 02:42:20,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:20,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964785691] [2022-01-18 02:42:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:20,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:21,042 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:21,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:21,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964785691] [2022-01-18 02:42:21,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964785691] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:21,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638018707] [2022-01-18 02:42:21,042 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:42:21,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:21,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:21,044 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:21,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 02:42:21,128 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:42:21,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:21,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:21,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:21,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:21,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:22,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638018707] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:22,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:22,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:42:22,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360191107] [2022-01-18 02:42:22,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:22,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:42:22,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:42:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:42:22,026 INFO L87 Difference]: Start difference. First operand 9191 states and 28566 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:28,230 INFO L93 Difference]: Finished difference Result 14706 states and 43590 transitions. [2022-01-18 02:42:28,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2022-01-18 02:42:28,230 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:28,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:28,268 INFO L225 Difference]: With dead ends: 14706 [2022-01-18 02:42:28,268 INFO L226 Difference]: Without dead ends: 14502 [2022-01-18 02:42:28,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12264 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=3398, Invalid=29908, Unknown=0, NotChecked=0, Total=33306 [2022-01-18 02:42:28,272 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 1343 mSDsluCounter, 6729 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 6771 SdHoareTripleChecker+Invalid, 3695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:28,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 6771 Invalid, 3695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 02:42:28,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14502 states. [2022-01-18 02:42:28,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14502 to 9327. [2022-01-18 02:42:28,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9327 states, 9326 states have (on average 3.1082993780827795) internal successors, (28988), 9326 states have internal predecessors, (28988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9327 states to 9327 states and 28988 transitions. [2022-01-18 02:42:28,518 INFO L78 Accepts]: Start accepts. Automaton has 9327 states and 28988 transitions. Word has length 74 [2022-01-18 02:42:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:28,518 INFO L470 AbstractCegarLoop]: Abstraction has 9327 states and 28988 transitions. [2022-01-18 02:42:28,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 9327 states and 28988 transitions. [2022-01-18 02:42:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:28,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:28,531 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:28,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:28,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:28,731 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1936259769, now seen corresponding path program 85 times [2022-01-18 02:42:28,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529284555] [2022-01-18 02:42:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:28,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:28,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:28,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529284555] [2022-01-18 02:42:28,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529284555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:28,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015982527] [2022-01-18 02:42:28,913 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:42:28,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:28,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:28,914 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:28,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 02:42:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:28,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:28,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:29,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:29,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:29,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015982527] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:29,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:29,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-01-18 02:42:29,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996932825] [2022-01-18 02:42:29,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:29,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:42:29,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:29,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:42:29,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:42:29,818 INFO L87 Difference]: Start difference. First operand 9327 states and 28988 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:31,443 INFO L93 Difference]: Finished difference Result 12315 states and 37330 transitions. [2022-01-18 02:42:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 02:42:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:31,466 INFO L225 Difference]: With dead ends: 12315 [2022-01-18 02:42:31,466 INFO L226 Difference]: Without dead ends: 12213 [2022-01-18 02:42:31,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=839, Invalid=6643, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 02:42:31,467 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 711 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:31,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 3339 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:42:31,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12213 states. [2022-01-18 02:42:31,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12213 to 9387. [2022-01-18 02:42:31,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9387 states, 9386 states have (on average 3.1038781163434903) internal successors, (29133), 9386 states have internal predecessors, (29133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:31,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9387 states to 9387 states and 29133 transitions. [2022-01-18 02:42:31,669 INFO L78 Accepts]: Start accepts. Automaton has 9387 states and 29133 transitions. Word has length 74 [2022-01-18 02:42:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:31,669 INFO L470 AbstractCegarLoop]: Abstraction has 9387 states and 29133 transitions. [2022-01-18 02:42:31,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9387 states and 29133 transitions. [2022-01-18 02:42:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:31,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:31,683 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:31,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2022-01-18 02:42:31,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:31,884 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash -525424113, now seen corresponding path program 86 times [2022-01-18 02:42:31,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:31,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008945063] [2022-01-18 02:42:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:31,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:32,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008945063] [2022-01-18 02:42:32,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008945063] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581431550] [2022-01-18 02:42:32,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:42:32,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:32,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:32,086 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:32,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 02:42:32,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:42:32,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:32,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:32,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:32,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:33,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:33,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581431550] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:33,103 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:33,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:42:33,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867846398] [2022-01-18 02:42:33,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:33,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:42:33,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:42:33,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:42:33,105 INFO L87 Difference]: Start difference. First operand 9387 states and 29133 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:35,663 INFO L93 Difference]: Finished difference Result 12716 states and 38283 transitions. [2022-01-18 02:42:35,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 02:42:35,663 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:35,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:35,685 INFO L225 Difference]: With dead ends: 12716 [2022-01-18 02:42:35,685 INFO L226 Difference]: Without dead ends: 12563 [2022-01-18 02:42:35,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3667 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1364, Invalid=10408, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 02:42:35,686 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1050 mSDsluCounter, 3160 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 1619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:35,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1050 Valid, 3222 Invalid, 1619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:42:35,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12563 states. [2022-01-18 02:42:35,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12563 to 9643. [2022-01-18 02:42:35,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9643 states, 9642 states have (on average 3.1114913918274216) internal successors, (30001), 9642 states have internal predecessors, (30001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9643 states to 9643 states and 30001 transitions. [2022-01-18 02:42:35,867 INFO L78 Accepts]: Start accepts. Automaton has 9643 states and 30001 transitions. Word has length 74 [2022-01-18 02:42:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:35,868 INFO L470 AbstractCegarLoop]: Abstraction has 9643 states and 30001 transitions. [2022-01-18 02:42:35,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 9643 states and 30001 transitions. [2022-01-18 02:42:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:35,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:35,882 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:35,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:36,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:36,083 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:36,083 INFO L85 PathProgramCache]: Analyzing trace with hash -504706727, now seen corresponding path program 87 times [2022-01-18 02:42:36,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:36,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459520117] [2022-01-18 02:42:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:36,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:36,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:36,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459520117] [2022-01-18 02:42:36,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459520117] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:36,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83250582] [2022-01-18 02:42:36,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:42:36,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:36,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:36,267 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:36,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 02:42:36,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:42:36,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:36,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:36,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:36,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:37,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83250582] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:37,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:37,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:42:37,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065784480] [2022-01-18 02:42:37,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:37,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:42:37,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:37,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:42:37,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:42:37,347 INFO L87 Difference]: Start difference. First operand 9643 states and 30001 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:40,450 INFO L93 Difference]: Finished difference Result 12717 states and 38338 transitions. [2022-01-18 02:42:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 02:42:40,450 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:40,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:40,473 INFO L225 Difference]: With dead ends: 12717 [2022-01-18 02:42:40,473 INFO L226 Difference]: Without dead ends: 12615 [2022-01-18 02:42:40,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2737 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1118, Invalid=8194, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 02:42:40,474 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 802 mSDsluCounter, 3171 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:40,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 3251 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:42:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12615 states. [2022-01-18 02:42:40,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12615 to 9659. [2022-01-18 02:42:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9659 states, 9658 states have (on average 3.111720853178712) internal successors, (30053), 9658 states have internal predecessors, (30053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9659 states to 9659 states and 30053 transitions. [2022-01-18 02:42:40,632 INFO L78 Accepts]: Start accepts. Automaton has 9659 states and 30053 transitions. Word has length 74 [2022-01-18 02:42:40,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:40,632 INFO L470 AbstractCegarLoop]: Abstraction has 9659 states and 30053 transitions. [2022-01-18 02:42:40,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:40,632 INFO L276 IsEmpty]: Start isEmpty. Operand 9659 states and 30053 transitions. [2022-01-18 02:42:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:40,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:40,645 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:40,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-01-18 02:42:40,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-01-18 02:42:40,845 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:40,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:40,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1149207489, now seen corresponding path program 88 times [2022-01-18 02:42:40,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:40,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573404536] [2022-01-18 02:42:40,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:40,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:41,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:41,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573404536] [2022-01-18 02:42:41,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573404536] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:41,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265498959] [2022-01-18 02:42:41,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:42:41,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:41,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:41,046 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:41,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 02:42:41,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:42:41,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:41,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:41,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:41,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:42,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:42,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265498959] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:42,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:42,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:42:42,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200824737] [2022-01-18 02:42:42,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:42,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:42:42,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:42:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1367, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:42:42,206 INFO L87 Difference]: Start difference. First operand 9659 states and 30053 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:52,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:52,987 INFO L93 Difference]: Finished difference Result 18049 states and 52586 transitions. [2022-01-18 02:42:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-01-18 02:42:52,987 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:42:53,014 INFO L225 Difference]: With dead ends: 18049 [2022-01-18 02:42:53,015 INFO L226 Difference]: Without dead ends: 17530 [2022-01-18 02:42:53,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24679 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=8239, Invalid=55517, Unknown=0, NotChecked=0, Total=63756 [2022-01-18 02:42:53,018 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 1957 mSDsluCounter, 8793 mSDsCounter, 0 mSdLazyCounter, 4468 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 8728 SdHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 4468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:42:53,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 8728 Invalid, 4780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 4468 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 02:42:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17530 states. [2022-01-18 02:42:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17530 to 10051. [2022-01-18 02:42:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10051 states, 10050 states have (on average 3.119900497512438) internal successors, (31355), 10050 states have internal predecessors, (31355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:53,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10051 states to 10051 states and 31355 transitions. [2022-01-18 02:42:53,199 INFO L78 Accepts]: Start accepts. Automaton has 10051 states and 31355 transitions. Word has length 74 [2022-01-18 02:42:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:42:53,199 INFO L470 AbstractCegarLoop]: Abstraction has 10051 states and 31355 transitions. [2022-01-18 02:42:53,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 10051 states and 31355 transitions. [2022-01-18 02:42:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:42:53,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:42:53,214 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:42:53,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 02:42:53,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:53,415 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:42:53,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:42:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1263759537, now seen corresponding path program 89 times [2022-01-18 02:42:53,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:42:53,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460563340] [2022-01-18 02:42:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:42:53,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:42:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:42:53,617 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:53,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:42:53,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460563340] [2022-01-18 02:42:53,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460563340] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:42:53,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163275573] [2022-01-18 02:42:53,617 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:42:53,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:42:53,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:42:53,618 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:42:53,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 02:42:53,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:42:53,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:42:53,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:42:53,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:42:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:54,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:42:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:42:54,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163275573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:42:54,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:42:54,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:42:54,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420331526] [2022-01-18 02:42:54,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:42:54,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:42:54,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:42:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:42:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:42:54,907 INFO L87 Difference]: Start difference. First operand 10051 states and 31355 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:42:59,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:42:59,990 INFO L93 Difference]: Finished difference Result 14599 states and 44273 transitions. [2022-01-18 02:42:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 02:42:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:42:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:00,016 INFO L225 Difference]: With dead ends: 14599 [2022-01-18 02:43:00,016 INFO L226 Difference]: Without dead ends: 14320 [2022-01-18 02:43:00,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6502 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1744, Invalid=17996, Unknown=0, NotChecked=0, Total=19740 [2022-01-18 02:43:00,018 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 934 mSDsluCounter, 4625 mSDsCounter, 0 mSdLazyCounter, 2563 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 2563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:00,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [934 Valid, 4683 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 2563 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:43:00,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14320 states. [2022-01-18 02:43:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14320 to 11399. [2022-01-18 02:43:00,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11399 states, 11398 states have (on average 3.1186173012809264) internal successors, (35546), 11398 states have internal predecessors, (35546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11399 states to 11399 states and 35546 transitions. [2022-01-18 02:43:00,214 INFO L78 Accepts]: Start accepts. Automaton has 11399 states and 35546 transitions. Word has length 74 [2022-01-18 02:43:00,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:00,214 INFO L470 AbstractCegarLoop]: Abstraction has 11399 states and 35546 transitions. [2022-01-18 02:43:00,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11399 states and 35546 transitions. [2022-01-18 02:43:00,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:43:00,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:00,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:00,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 02:43:00,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:00,431 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:00,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:00,432 INFO L85 PathProgramCache]: Analyzing trace with hash -914776021, now seen corresponding path program 90 times [2022-01-18 02:43:00,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:00,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378826016] [2022-01-18 02:43:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:00,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:00,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:00,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378826016] [2022-01-18 02:43:00,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378826016] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:00,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028268763] [2022-01-18 02:43:00,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:43:00,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:00,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:00,683 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:00,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 02:43:00,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:43:00,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:00,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:43:00,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:01,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:01,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028268763] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:01,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:01,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:43:01,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876089152] [2022-01-18 02:43:01,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:01,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:43:01,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:43:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:43:01,877 INFO L87 Difference]: Start difference. First operand 11399 states and 35546 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:10,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:10,442 INFO L93 Difference]: Finished difference Result 17269 states and 51859 transitions. [2022-01-18 02:43:10,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-01-18 02:43:10,442 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:43:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:10,472 INFO L225 Difference]: With dead ends: 17269 [2022-01-18 02:43:10,472 INFO L226 Difference]: Without dead ends: 16744 [2022-01-18 02:43:10,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14173 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3426, Invalid=35186, Unknown=0, NotChecked=0, Total=38612 [2022-01-18 02:43:10,475 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 1318 mSDsluCounter, 7430 mSDsCounter, 0 mSdLazyCounter, 4085 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 7515 SdHoareTripleChecker+Invalid, 4353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 4085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:10,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 7515 Invalid, 4353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 4085 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:43:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16744 states. [2022-01-18 02:43:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16744 to 11795. [2022-01-18 02:43:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11795 states, 11794 states have (on average 3.1323554349669323) internal successors, (36943), 11794 states have internal predecessors, (36943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11795 states to 11795 states and 36943 transitions. [2022-01-18 02:43:10,687 INFO L78 Accepts]: Start accepts. Automaton has 11795 states and 36943 transitions. Word has length 74 [2022-01-18 02:43:10,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:10,687 INFO L470 AbstractCegarLoop]: Abstraction has 11795 states and 36943 transitions. [2022-01-18 02:43:10,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:10,687 INFO L276 IsEmpty]: Start isEmpty. Operand 11795 states and 36943 transitions. [2022-01-18 02:43:10,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:43:10,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:10,703 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:10,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-01-18 02:43:10,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:10,904 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1658397179, now seen corresponding path program 91 times [2022-01-18 02:43:10,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:10,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393935558] [2022-01-18 02:43:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:10,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:11,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:11,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393935558] [2022-01-18 02:43:11,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393935558] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:11,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992135507] [2022-01-18 02:43:11,102 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:43:11,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:11,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:11,103 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:11,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 02:43:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:11,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:43:11,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:11,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:12,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992135507] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:12,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:12,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:43:12,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861404265] [2022-01-18 02:43:12,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:12,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:43:12,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:12,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:43:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:43:12,406 INFO L87 Difference]: Start difference. First operand 11795 states and 36943 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:17,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:17,146 INFO L93 Difference]: Finished difference Result 15389 states and 46991 transitions. [2022-01-18 02:43:17,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-01-18 02:43:17,146 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:43:17,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:17,174 INFO L225 Difference]: With dead ends: 15389 [2022-01-18 02:43:17,175 INFO L226 Difference]: Without dead ends: 15176 [2022-01-18 02:43:17,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5529 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1507, Invalid=15785, Unknown=0, NotChecked=0, Total=17292 [2022-01-18 02:43:17,177 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 725 mSDsluCounter, 5958 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 6056 SdHoareTripleChecker+Invalid, 3242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:17,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 6056 Invalid, 3242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:43:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15176 states. [2022-01-18 02:43:17,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15176 to 12299. [2022-01-18 02:43:17,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12299 states, 12298 states have (on average 3.131322166205887) internal successors, (38509), 12298 states have internal predecessors, (38509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 38509 transitions. [2022-01-18 02:43:17,424 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 38509 transitions. Word has length 74 [2022-01-18 02:43:17,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:17,424 INFO L470 AbstractCegarLoop]: Abstraction has 12299 states and 38509 transitions. [2022-01-18 02:43:17,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:17,424 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 38509 transitions. [2022-01-18 02:43:17,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:43:17,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:17,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:17,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 02:43:17,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:17,643 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2007380695, now seen corresponding path program 92 times [2022-01-18 02:43:17,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:17,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771237261] [2022-01-18 02:43:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:17,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:17,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:17,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771237261] [2022-01-18 02:43:17,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771237261] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:17,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45712564] [2022-01-18 02:43:17,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:43:17,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:17,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:17,852 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:17,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 02:43:17,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:43:17,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:17,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:43:17,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:18,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:19,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:19,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45712564] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:19,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:19,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:43:19,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736966123] [2022-01-18 02:43:19,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:19,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:43:19,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:19,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:43:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:43:19,062 INFO L87 Difference]: Start difference. First operand 12299 states and 38509 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:27,391 INFO L93 Difference]: Finished difference Result 18546 states and 56229 transitions. [2022-01-18 02:43:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2022-01-18 02:43:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:43:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:27,424 INFO L225 Difference]: With dead ends: 18546 [2022-01-18 02:43:27,424 INFO L226 Difference]: Without dead ends: 18051 [2022-01-18 02:43:27,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12665 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3170, Invalid=31986, Unknown=0, NotChecked=0, Total=35156 [2022-01-18 02:43:27,428 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 1355 mSDsluCounter, 8016 mSDsCounter, 0 mSdLazyCounter, 4291 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 8096 SdHoareTripleChecker+Invalid, 4562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 4291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:27,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 8096 Invalid, 4562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 4291 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 02:43:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18051 states. [2022-01-18 02:43:27,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18051 to 12491. [2022-01-18 02:43:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 3.1619695756605286) internal successors, (39493), 12490 states have internal predecessors, (39493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:27,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 39493 transitions. [2022-01-18 02:43:27,713 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 39493 transitions. Word has length 74 [2022-01-18 02:43:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:27,713 INFO L470 AbstractCegarLoop]: Abstraction has 12491 states and 39493 transitions. [2022-01-18 02:43:27,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:27,713 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 39493 transitions. [2022-01-18 02:43:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:43:27,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:27,732 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:27,747 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-01-18 02:43:27,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:27,932 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1221977889, now seen corresponding path program 93 times [2022-01-18 02:43:27,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:27,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831420494] [2022-01-18 02:43:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:27,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:28,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:28,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:28,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831420494] [2022-01-18 02:43:28,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831420494] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:28,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512909083] [2022-01-18 02:43:28,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:43:28,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:28,133 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:28,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 02:43:28,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:43:28,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:28,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 30 conjunts are in the unsatisfiable core [2022-01-18 02:43:28,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:28,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:29,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512909083] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:29,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:29,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 21] total 49 [2022-01-18 02:43:29,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386965476] [2022-01-18 02:43:29,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:29,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 02:43:29,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:29,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 02:43:29,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=2114, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 02:43:29,774 INFO L87 Difference]: Start difference. First operand 12491 states and 39493 transitions. Second operand has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:35,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:35,768 INFO L93 Difference]: Finished difference Result 16670 states and 51165 transitions. [2022-01-18 02:43:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-01-18 02:43:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:43:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:35,798 INFO L225 Difference]: With dead ends: 16670 [2022-01-18 02:43:35,798 INFO L226 Difference]: Without dead ends: 16508 [2022-01-18 02:43:35,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5471 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2129, Invalid=16777, Unknown=0, NotChecked=0, Total=18906 [2022-01-18 02:43:35,800 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1318 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 2107 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:35,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 3240 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 2107 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:43:35,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16508 states. [2022-01-18 02:43:35,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16508 to 12699. [2022-01-18 02:43:36,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12699 states, 12698 states have (on average 3.1700267758702156) internal successors, (40253), 12698 states have internal predecessors, (40253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12699 states to 12699 states and 40253 transitions. [2022-01-18 02:43:36,038 INFO L78 Accepts]: Start accepts. Automaton has 12699 states and 40253 transitions. Word has length 74 [2022-01-18 02:43:36,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:36,038 INFO L470 AbstractCegarLoop]: Abstraction has 12699 states and 40253 transitions. [2022-01-18 02:43:36,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.4081632653061225) internal successors, (167), 49 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 12699 states and 40253 transitions. [2022-01-18 02:43:36,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:43:36,057 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:36,057 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:36,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-18 02:43:36,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-01-18 02:43:36,258 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:36,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:36,258 INFO L85 PathProgramCache]: Analyzing trace with hash -591710751, now seen corresponding path program 94 times [2022-01-18 02:43:36,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:36,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848598379] [2022-01-18 02:43:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:36,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:36,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848598379] [2022-01-18 02:43:36,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848598379] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057966103] [2022-01-18 02:43:36,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:43:36,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:36,464 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:36,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 02:43:36,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:43:36,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:36,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:43:36,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:37,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:37,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:37,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057966103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:37,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:37,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:43:37,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821496216] [2022-01-18 02:43:37,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:37,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:43:37,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:37,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:43:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:43:37,706 INFO L87 Difference]: Start difference. First operand 12699 states and 40253 transitions. Second operand has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:43:48,611 INFO L93 Difference]: Finished difference Result 21395 states and 65297 transitions. [2022-01-18 02:43:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2022-01-18 02:43:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:43:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:43:48,650 INFO L225 Difference]: With dead ends: 21395 [2022-01-18 02:43:48,650 INFO L226 Difference]: Without dead ends: 21191 [2022-01-18 02:43:48,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18686 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4394, Invalid=43348, Unknown=0, NotChecked=0, Total=47742 [2022-01-18 02:43:48,654 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 1411 mSDsluCounter, 6799 mSDsCounter, 0 mSdLazyCounter, 3802 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 6954 SdHoareTripleChecker+Invalid, 4042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 3802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:43:48,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1411 Valid, 6954 Invalid, 4042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 3802 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:43:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21191 states. [2022-01-18 02:43:48,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21191 to 14307. [2022-01-18 02:43:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14307 states, 14306 states have (on average 3.185726268698448) internal successors, (45575), 14306 states have internal predecessors, (45575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14307 states to 14307 states and 45575 transitions. [2022-01-18 02:43:49,040 INFO L78 Accepts]: Start accepts. Automaton has 14307 states and 45575 transitions. Word has length 74 [2022-01-18 02:43:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:43:49,040 INFO L470 AbstractCegarLoop]: Abstraction has 14307 states and 45575 transitions. [2022-01-18 02:43:49,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.675) internal successors, (147), 40 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:43:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 14307 states and 45575 transitions. [2022-01-18 02:43:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:43:49,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:43:49,062 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:43:49,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-01-18 02:43:49,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable96 [2022-01-18 02:43:49,262 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:43:49,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:43:49,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1265584007, now seen corresponding path program 95 times [2022-01-18 02:43:49,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:43:49,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605268371] [2022-01-18 02:43:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:43:49,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:43:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:43:49,468 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:49,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:43:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605268371] [2022-01-18 02:43:49,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605268371] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:43:49,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121277642] [2022-01-18 02:43:49,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:43:49,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:43:49,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:43:49,470 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:43:49,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 02:43:49,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 02:43:49,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:43:49,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:43:49,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:43:50,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:50,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:43:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:43:50,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121277642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:43:50,611 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:43:50,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:43:50,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354562827] [2022-01-18 02:43:50,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:43:50,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:43:50,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:43:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:43:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:43:50,612 INFO L87 Difference]: Start difference. First operand 14307 states and 45575 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:01,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:01,011 INFO L93 Difference]: Finished difference Result 22034 states and 67223 transitions. [2022-01-18 02:44:01,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2022-01-18 02:44:01,011 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:01,053 INFO L225 Difference]: With dead ends: 22034 [2022-01-18 02:44:01,053 INFO L226 Difference]: Without dead ends: 21524 [2022-01-18 02:44:01,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18815 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=4518, Invalid=44544, Unknown=0, NotChecked=0, Total=49062 [2022-01-18 02:44:01,058 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1614 mSDsluCounter, 7176 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 7300 SdHoareTripleChecker+Invalid, 4177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:01,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 7300 Invalid, 4177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 3862 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 02:44:01,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21524 states. [2022-01-18 02:44:01,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21524 to 14327. [2022-01-18 02:44:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14327 states, 14326 states have (on average 3.1834426916096605) internal successors, (45606), 14326 states have internal predecessors, (45606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14327 states to 14327 states and 45606 transitions. [2022-01-18 02:44:01,389 INFO L78 Accepts]: Start accepts. Automaton has 14327 states and 45606 transitions. Word has length 74 [2022-01-18 02:44:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:01,389 INFO L470 AbstractCegarLoop]: Abstraction has 14327 states and 45606 transitions. [2022-01-18 02:44:01,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14327 states and 45606 transitions. [2022-01-18 02:44:01,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:01,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:01,415 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:01,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-01-18 02:44:01,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:01,615 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:01,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:01,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1021008305, now seen corresponding path program 96 times [2022-01-18 02:44:01,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:01,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523906102] [2022-01-18 02:44:01,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:01,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:01,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:01,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523906102] [2022-01-18 02:44:01,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523906102] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:01,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067935901] [2022-01-18 02:44:01,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:44:01,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:01,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:01,820 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:01,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 02:44:01,913 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:44:01,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:01,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:01,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:02,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:02,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067935901] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:02,837 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:02,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-01-18 02:44:02,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503738534] [2022-01-18 02:44:02,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:02,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:44:02,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:02,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:44:02,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1239, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:44:02,838 INFO L87 Difference]: Start difference. First operand 14327 states and 45606 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:05,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:05,819 INFO L93 Difference]: Finished difference Result 18624 states and 57947 transitions. [2022-01-18 02:44:05,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 02:44:05,820 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:05,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:05,854 INFO L225 Difference]: With dead ends: 18624 [2022-01-18 02:44:05,854 INFO L226 Difference]: Without dead ends: 18522 [2022-01-18 02:44:05,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3863 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1306, Invalid=10684, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 02:44:05,855 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 701 mSDsluCounter, 4283 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:05,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 4298 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:44:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18522 states. [2022-01-18 02:44:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18522 to 14923. [2022-01-18 02:44:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14923 states, 14922 states have (on average 3.185430907385069) internal successors, (47533), 14922 states have internal predecessors, (47533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:06,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14923 states to 14923 states and 47533 transitions. [2022-01-18 02:44:06,139 INFO L78 Accepts]: Start accepts. Automaton has 14923 states and 47533 transitions. Word has length 74 [2022-01-18 02:44:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:06,139 INFO L470 AbstractCegarLoop]: Abstraction has 14923 states and 47533 transitions. [2022-01-18 02:44:06,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14923 states and 47533 transitions. [2022-01-18 02:44:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:06,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:06,161 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:06,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-01-18 02:44:06,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:06,363 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1000290919, now seen corresponding path program 97 times [2022-01-18 02:44:06,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:06,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756900410] [2022-01-18 02:44:06,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:06,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:06,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:06,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756900410] [2022-01-18 02:44:06,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756900410] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:06,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612344697] [2022-01-18 02:44:06,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:44:06,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:06,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:06,556 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:06,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 02:44:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:06,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:06,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:07,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:07,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612344697] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:07,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:07,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:44:07,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461461126] [2022-01-18 02:44:07,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:07,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:07,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:07,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:07,617 INFO L87 Difference]: Start difference. First operand 14923 states and 47533 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:11,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:11,378 INFO L93 Difference]: Finished difference Result 18508 states and 57720 transitions. [2022-01-18 02:44:11,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 02:44:11,378 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:11,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:11,414 INFO L225 Difference]: With dead ends: 18508 [2022-01-18 02:44:11,415 INFO L226 Difference]: Without dead ends: 18406 [2022-01-18 02:44:11,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3456 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1297, Invalid=9833, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 02:44:11,416 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 741 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 1860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:11,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3439 Invalid, 1860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1732 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 02:44:11,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18406 states. [2022-01-18 02:44:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18406 to 14951. [2022-01-18 02:44:11,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14951 states, 14950 states have (on average 3.184882943143813) internal successors, (47614), 14950 states have internal predecessors, (47614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14951 states to 14951 states and 47614 transitions. [2022-01-18 02:44:11,706 INFO L78 Accepts]: Start accepts. Automaton has 14951 states and 47614 transitions. Word has length 74 [2022-01-18 02:44:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:11,706 INFO L470 AbstractCegarLoop]: Abstraction has 14951 states and 47614 transitions. [2022-01-18 02:44:11,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 14951 states and 47614 transitions. [2022-01-18 02:44:11,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:11,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:11,729 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:11,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:11,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2022-01-18 02:44:11,935 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:11,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1644791681, now seen corresponding path program 98 times [2022-01-18 02:44:11,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:11,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748460385] [2022-01-18 02:44:11,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:11,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:12,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:12,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748460385] [2022-01-18 02:44:12,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748460385] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:12,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378393485] [2022-01-18 02:44:12,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:44:12,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:12,144 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:12,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 02:44:12,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:44:12,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:12,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:12,673 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:12,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:13,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378393485] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:13,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:13,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:44:13,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875361597] [2022-01-18 02:44:13,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:13,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:13,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:13,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:13,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:13,248 INFO L87 Difference]: Start difference. First operand 14951 states and 47614 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:24,275 INFO L93 Difference]: Finished difference Result 25325 states and 76492 transitions. [2022-01-18 02:44:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-01-18 02:44:24,275 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:24,324 INFO L225 Difference]: With dead ends: 25325 [2022-01-18 02:44:24,325 INFO L226 Difference]: Without dead ends: 24776 [2022-01-18 02:44:24,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27098 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=8356, Invalid=60026, Unknown=0, NotChecked=0, Total=68382 [2022-01-18 02:44:24,330 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1879 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 4559 mSolverCounterSat, 357 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 8652 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 4559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:24,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1879 Valid, 8652 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [357 Valid, 4559 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 02:44:24,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24776 states. [2022-01-18 02:44:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24776 to 15319. [2022-01-18 02:44:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15319 states, 15318 states have (on average 3.188014101057579) internal successors, (48834), 15318 states have internal predecessors, (48834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15319 states to 15319 states and 48834 transitions. [2022-01-18 02:44:24,722 INFO L78 Accepts]: Start accepts. Automaton has 15319 states and 48834 transitions. Word has length 74 [2022-01-18 02:44:24,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:24,722 INFO L470 AbstractCegarLoop]: Abstraction has 15319 states and 48834 transitions. [2022-01-18 02:44:24,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:24,722 INFO L276 IsEmpty]: Start isEmpty. Operand 15319 states and 48834 transitions. [2022-01-18 02:44:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:24,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:24,746 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:24,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:24,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:24,947 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash 377723573, now seen corresponding path program 99 times [2022-01-18 02:44:24,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:24,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205391467] [2022-01-18 02:44:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:24,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:25,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:25,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:25,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205391467] [2022-01-18 02:44:25,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205391467] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967158417] [2022-01-18 02:44:25,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:44:25,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:25,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:25,144 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:25,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 02:44:25,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:44:25,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:25,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:25,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:25,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:26,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:26,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967158417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:26,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:26,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:44:26,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887153791] [2022-01-18 02:44:26,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:26,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:26,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:26,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:26,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:26,180 INFO L87 Difference]: Start difference. First operand 15319 states and 48834 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:30,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:30,202 INFO L93 Difference]: Finished difference Result 20270 states and 62885 transitions. [2022-01-18 02:44:30,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 02:44:30,202 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:30,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:30,242 INFO L225 Difference]: With dead ends: 20270 [2022-01-18 02:44:30,242 INFO L226 Difference]: Without dead ends: 19694 [2022-01-18 02:44:30,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6531 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2589, Invalid=16871, Unknown=0, NotChecked=0, Total=19460 [2022-01-18 02:44:30,244 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 1539 mSDsluCounter, 4102 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:30,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1539 Valid, 4208 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:44:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19694 states. [2022-01-18 02:44:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19694 to 15967. [2022-01-18 02:44:30,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15967 states, 15966 states have (on average 3.18952774646123) internal successors, (50924), 15966 states have internal predecessors, (50924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15967 states to 15967 states and 50924 transitions. [2022-01-18 02:44:30,538 INFO L78 Accepts]: Start accepts. Automaton has 15967 states and 50924 transitions. Word has length 74 [2022-01-18 02:44:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:30,538 INFO L470 AbstractCegarLoop]: Abstraction has 15967 states and 50924 transitions. [2022-01-18 02:44:30,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 15967 states and 50924 transitions. [2022-01-18 02:44:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:30,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:30,561 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:30,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-01-18 02:44:30,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:30,762 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:30,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:30,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1042978437, now seen corresponding path program 100 times [2022-01-18 02:44:30,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:30,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346867143] [2022-01-18 02:44:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:30,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:30,965 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:30,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:30,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346867143] [2022-01-18 02:44:30,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346867143] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:30,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452827383] [2022-01-18 02:44:30,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:44:30,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:30,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:30,967 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:30,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 02:44:31,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:44:31,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:31,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:31,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:31,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:32,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452827383] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:32,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:32,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:44:32,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983391904] [2022-01-18 02:44:32,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:32,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:32,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:32,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1314, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:32,096 INFO L87 Difference]: Start difference. First operand 15967 states and 50924 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:37,388 INFO L93 Difference]: Finished difference Result 23277 states and 71172 transitions. [2022-01-18 02:44:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-18 02:44:37,388 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:37,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:37,427 INFO L225 Difference]: With dead ends: 23277 [2022-01-18 02:44:37,428 INFO L226 Difference]: Without dead ends: 23073 [2022-01-18 02:44:37,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9187 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2673, Invalid=23409, Unknown=0, NotChecked=0, Total=26082 [2022-01-18 02:44:37,429 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1096 mSDsluCounter, 5656 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 5761 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:37,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 5761 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2968 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:44:37,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23073 states. [2022-01-18 02:44:37,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23073 to 16135. [2022-01-18 02:44:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16135 states, 16134 states have (on average 3.1876781951159043) internal successors, (51430), 16134 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:37,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16135 states to 16135 states and 51430 transitions. [2022-01-18 02:44:37,739 INFO L78 Accepts]: Start accepts. Automaton has 16135 states and 51430 transitions. Word has length 74 [2022-01-18 02:44:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:37,739 INFO L470 AbstractCegarLoop]: Abstraction has 16135 states and 51430 transitions. [2022-01-18 02:44:37,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 16135 states and 51430 transitions. [2022-01-18 02:44:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:37,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:37,764 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:37,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 02:44:37,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-01-18 02:44:37,964 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1710809265, now seen corresponding path program 101 times [2022-01-18 02:44:37,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:37,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635094304] [2022-01-18 02:44:37,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:37,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:38,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:38,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635094304] [2022-01-18 02:44:38,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635094304] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:38,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117359337] [2022-01-18 02:44:38,179 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:44:38,179 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:38,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:38,180 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:38,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 02:44:38,277 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:44:38,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:38,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:38,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:38,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:39,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:39,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117359337] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:39,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:39,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-01-18 02:44:39,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29259536] [2022-01-18 02:44:39,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:39,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:44:39,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:39,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:44:39,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:44:39,140 INFO L87 Difference]: Start difference. First operand 16135 states and 51430 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:40,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:40,539 INFO L93 Difference]: Finished difference Result 19873 states and 62108 transitions. [2022-01-18 02:44:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 02:44:40,540 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:40,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:40,580 INFO L225 Difference]: With dead ends: 19873 [2022-01-18 02:44:40,580 INFO L226 Difference]: Without dead ends: 19771 [2022-01-18 02:44:40,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=559, Invalid=4411, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 02:44:40,581 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 496 mSDsluCounter, 3740 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:40,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 3783 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 02:44:40,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19771 states. [2022-01-18 02:44:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19771 to 16135. [2022-01-18 02:44:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16135 states, 16134 states have (on average 3.1876781951159043) internal successors, (51430), 16134 states have internal predecessors, (51430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16135 states to 16135 states and 51430 transitions. [2022-01-18 02:44:40,919 INFO L78 Accepts]: Start accepts. Automaton has 16135 states and 51430 transitions. Word has length 74 [2022-01-18 02:44:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:40,920 INFO L470 AbstractCegarLoop]: Abstraction has 16135 states and 51430 transitions. [2022-01-18 02:44:40,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 16135 states and 51430 transitions. [2022-01-18 02:44:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:40,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:40,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:40,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 02:44:41,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-01-18 02:44:41,145 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash 864727055, now seen corresponding path program 102 times [2022-01-18 02:44:41,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:41,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7273512] [2022-01-18 02:44:41,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:41,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:41,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:41,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7273512] [2022-01-18 02:44:41,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7273512] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723796018] [2022-01-18 02:44:41,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:44:41,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:41,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:41,332 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:41,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 02:44:41,427 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:44:41,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:41,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:41,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:41,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:41,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:42,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723796018] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:42,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:42,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-01-18 02:44:42,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134988053] [2022-01-18 02:44:42,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:42,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:44:42,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:42,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:44:42,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1242, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:44:42,371 INFO L87 Difference]: Start difference. First operand 16135 states and 51430 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:44,883 INFO L93 Difference]: Finished difference Result 19924 states and 62195 transitions. [2022-01-18 02:44:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 02:44:44,883 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:44,922 INFO L225 Difference]: With dead ends: 19924 [2022-01-18 02:44:44,922 INFO L226 Difference]: Without dead ends: 19822 [2022-01-18 02:44:44,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1075, Invalid=8825, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:44:44,923 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 794 mSDsluCounter, 2956 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:44,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 3015 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:44:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19822 states. [2022-01-18 02:44:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19822 to 16379. [2022-01-18 02:44:45,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16379 states, 16378 states have (on average 3.1882403223836855) internal successors, (52217), 16378 states have internal predecessors, (52217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16379 states to 16379 states and 52217 transitions. [2022-01-18 02:44:45,248 INFO L78 Accepts]: Start accepts. Automaton has 16379 states and 52217 transitions. Word has length 74 [2022-01-18 02:44:45,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:45,248 INFO L470 AbstractCegarLoop]: Abstraction has 16379 states and 52217 transitions. [2022-01-18 02:44:45,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 16379 states and 52217 transitions. [2022-01-18 02:44:45,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:45,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:45,275 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:45,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2022-01-18 02:44:45,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:45,475 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:45,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:45,475 INFO L85 PathProgramCache]: Analyzing trace with hash 885444441, now seen corresponding path program 103 times [2022-01-18 02:44:45,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:45,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321879370] [2022-01-18 02:44:45,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:45,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:45,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:45,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:45,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321879370] [2022-01-18 02:44:45,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321879370] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:45,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757315451] [2022-01-18 02:44:45,667 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:44:45,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:45,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:45,668 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:45,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 02:44:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:45,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:45,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:46,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:46,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:46,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757315451] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:46,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:46,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:44:46,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896915594] [2022-01-18 02:44:46,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:46,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:46,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:46,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:46,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:46,761 INFO L87 Difference]: Start difference. First operand 16379 states and 52217 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:49,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:49,110 INFO L93 Difference]: Finished difference Result 19784 states and 61798 transitions. [2022-01-18 02:44:49,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 02:44:49,110 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:49,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:49,153 INFO L225 Difference]: With dead ends: 19784 [2022-01-18 02:44:49,153 INFO L226 Difference]: Without dead ends: 19682 [2022-01-18 02:44:49,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1950 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=858, Invalid=6282, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 02:44:49,154 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 800 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 1610 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:49,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 3201 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1610 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:44:49,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19682 states. [2022-01-18 02:44:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19682 to 16435. [2022-01-18 02:44:49,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16435 states, 16434 states have (on average 3.1884507727881224) internal successors, (52399), 16434 states have internal predecessors, (52399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16435 states to 16435 states and 52399 transitions. [2022-01-18 02:44:49,482 INFO L78 Accepts]: Start accepts. Automaton has 16435 states and 52399 transitions. Word has length 74 [2022-01-18 02:44:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:49,482 INFO L470 AbstractCegarLoop]: Abstraction has 16435 states and 52399 transitions. [2022-01-18 02:44:49,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 16435 states and 52399 transitions. [2022-01-18 02:44:49,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:49,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:49,507 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:49,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-01-18 02:44:49,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:49,707 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:49,708 INFO L85 PathProgramCache]: Analyzing trace with hash 240943679, now seen corresponding path program 104 times [2022-01-18 02:44:49,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:49,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60807524] [2022-01-18 02:44:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:49,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:49,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:49,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60807524] [2022-01-18 02:44:49,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60807524] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:49,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467103931] [2022-01-18 02:44:49,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:44:49,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:49,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:49,931 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:49,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 02:44:50,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:44:50,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:50,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:50,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:50,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:50,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467103931] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:50,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:50,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:44:50,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343714768] [2022-01-18 02:44:50,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:50,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:50,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1294, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:50,986 INFO L87 Difference]: Start difference. First operand 16435 states and 52399 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:57,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:44:57,693 INFO L93 Difference]: Finished difference Result 23659 states and 72458 transitions. [2022-01-18 02:44:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-18 02:44:57,694 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:44:57,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:44:57,738 INFO L225 Difference]: With dead ends: 23659 [2022-01-18 02:44:57,738 INFO L226 Difference]: Without dead ends: 23173 [2022-01-18 02:44:57,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11239 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=4019, Invalid=27487, Unknown=0, NotChecked=0, Total=31506 [2022-01-18 02:44:57,742 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 1704 mSDsluCounter, 6104 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1704 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 3334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:44:57,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1704 Valid, 6094 Invalid, 3334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 02:44:57,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23173 states. [2022-01-18 02:44:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23173 to 16551. [2022-01-18 02:44:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16551 states, 16550 states have (on average 3.1865861027190334) internal successors, (52738), 16550 states have internal predecessors, (52738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:58,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16551 states to 16551 states and 52738 transitions. [2022-01-18 02:44:58,142 INFO L78 Accepts]: Start accepts. Automaton has 16551 states and 52738 transitions. Word has length 74 [2022-01-18 02:44:58,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:44:58,142 INFO L470 AbstractCegarLoop]: Abstraction has 16551 states and 52738 transitions. [2022-01-18 02:44:58,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:44:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 16551 states and 52738 transitions. [2022-01-18 02:44:58,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:44:58,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:44:58,167 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:44:58,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2022-01-18 02:44:58,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-01-18 02:44:58,371 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:44:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:44:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash -945326863, now seen corresponding path program 105 times [2022-01-18 02:44:58,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:44:58,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911505748] [2022-01-18 02:44:58,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:44:58,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:44:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:44:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:58,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:44:58,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911505748] [2022-01-18 02:44:58,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911505748] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:44:58,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837001213] [2022-01-18 02:44:58,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:44:58,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:44:58,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:44:58,584 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:44:58,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 02:44:58,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:44:58,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:44:58,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:44:58,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:44:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:59,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:44:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:44:59,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837001213] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:44:59,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:44:59,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:44:59,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153413275] [2022-01-18 02:44:59,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:44:59,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:44:59,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:44:59,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:44:59,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:44:59,799 INFO L87 Difference]: Start difference. First operand 16551 states and 52738 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:03,884 INFO L93 Difference]: Finished difference Result 21339 states and 66291 transitions. [2022-01-18 02:45:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 02:45:03,885 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:03,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:03,928 INFO L225 Difference]: With dead ends: 21339 [2022-01-18 02:45:03,929 INFO L226 Difference]: Without dead ends: 21186 [2022-01-18 02:45:03,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=1193, Invalid=11017, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 02:45:03,930 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 735 mSDsluCounter, 4591 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 4627 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:03,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 4627 Invalid, 2543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:45:03,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21186 states. [2022-01-18 02:45:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21186 to 16755. [2022-01-18 02:45:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16755 states, 16754 states have (on average 3.183418885042378) internal successors, (53335), 16754 states have internal predecessors, (53335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16755 states to 16755 states and 53335 transitions. [2022-01-18 02:45:04,248 INFO L78 Accepts]: Start accepts. Automaton has 16755 states and 53335 transitions. Word has length 74 [2022-01-18 02:45:04,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:04,249 INFO L470 AbstractCegarLoop]: Abstraction has 16755 states and 53335 transitions. [2022-01-18 02:45:04,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:04,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16755 states and 53335 transitions. [2022-01-18 02:45:04,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:04,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:04,274 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:04,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:04,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2022-01-18 02:45:04,474 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:04,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:04,475 INFO L85 PathProgramCache]: Analyzing trace with hash 842756923, now seen corresponding path program 106 times [2022-01-18 02:45:04,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:04,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143152522] [2022-01-18 02:45:04,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:04,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:04,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143152522] [2022-01-18 02:45:04,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143152522] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:04,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976262581] [2022-01-18 02:45:04,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:45:04,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:04,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:04,672 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:04,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 02:45:04,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:45:04,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:04,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:04,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:05,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:05,687 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:05,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976262581] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:05,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:05,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:45:05,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216008521] [2022-01-18 02:45:05,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:05,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:45:05,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:45:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1313, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:45:05,688 INFO L87 Difference]: Start difference. First operand 16755 states and 53335 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:09,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:09,642 INFO L93 Difference]: Finished difference Result 23086 states and 70945 transitions. [2022-01-18 02:45:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 02:45:09,642 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:09,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:09,685 INFO L225 Difference]: With dead ends: 23086 [2022-01-18 02:45:09,685 INFO L226 Difference]: Without dead ends: 22882 [2022-01-18 02:45:09,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5013 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1833, Invalid=14169, Unknown=0, NotChecked=0, Total=16002 [2022-01-18 02:45:09,687 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 924 mSDsluCounter, 5217 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 5277 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:09,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 5277 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 02:45:09,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22882 states. [2022-01-18 02:45:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22882 to 16763. [2022-01-18 02:45:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16763 states, 16762 states have (on average 3.1834506622121466) internal successors, (53361), 16762 states have internal predecessors, (53361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:10,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16763 states to 16763 states and 53361 transitions. [2022-01-18 02:45:10,025 INFO L78 Accepts]: Start accepts. Automaton has 16763 states and 53361 transitions. Word has length 74 [2022-01-18 02:45:10,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:10,025 INFO L470 AbstractCegarLoop]: Abstraction has 16763 states and 53361 transitions. [2022-01-18 02:45:10,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:10,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16763 states and 53361 transitions. [2022-01-18 02:45:10,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:10,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:10,051 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:10,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-01-18 02:45:10,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:10,252 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash 174926095, now seen corresponding path program 107 times [2022-01-18 02:45:10,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:10,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800881563] [2022-01-18 02:45:10,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:10,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:10,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:10,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800881563] [2022-01-18 02:45:10,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800881563] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:10,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474966249] [2022-01-18 02:45:10,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:45:10,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:10,478 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:10,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 02:45:10,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:45:10,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:10,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:10,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:11,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:11,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474966249] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:11,691 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:11,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-01-18 02:45:11,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255791644] [2022-01-18 02:45:11,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:11,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:45:11,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:11,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:45:11,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1244, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:45:11,696 INFO L87 Difference]: Start difference. First operand 16763 states and 53361 transitions. Second operand has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:13,086 INFO L93 Difference]: Finished difference Result 20861 states and 65021 transitions. [2022-01-18 02:45:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 02:45:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:13,126 INFO L225 Difference]: With dead ends: 20861 [2022-01-18 02:45:13,127 INFO L226 Difference]: Without dead ends: 20759 [2022-01-18 02:45:13,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=655, Invalid=5045, Unknown=0, NotChecked=0, Total=5700 [2022-01-18 02:45:13,127 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 619 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:13,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [619 Valid, 2767 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:45:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20759 states. [2022-01-18 02:45:13,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20759 to 16763. [2022-01-18 02:45:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16763 states, 16762 states have (on average 3.1834506622121466) internal successors, (53361), 16762 states have internal predecessors, (53361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:13,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16763 states to 16763 states and 53361 transitions. [2022-01-18 02:45:13,473 INFO L78 Accepts]: Start accepts. Automaton has 16763 states and 53361 transitions. Word has length 74 [2022-01-18 02:45:13,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:13,474 INFO L470 AbstractCegarLoop]: Abstraction has 16763 states and 53361 transitions. [2022-01-18 02:45:13,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.736842105263158) internal successors, (142), 38 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:13,474 INFO L276 IsEmpty]: Start isEmpty. Operand 16763 states and 53361 transitions. [2022-01-18 02:45:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:13,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:13,499 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:13,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:13,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:13,699 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:13,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1118278021, now seen corresponding path program 108 times [2022-01-18 02:45:13,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:13,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911022666] [2022-01-18 02:45:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:13,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:13,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:13,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911022666] [2022-01-18 02:45:13,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911022666] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:13,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703691322] [2022-01-18 02:45:13,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:45:13,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:13,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:13,913 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:13,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 02:45:14,008 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 02:45:14,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:14,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:14,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:14,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:14,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703691322] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:14,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:14,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:45:14,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085805019] [2022-01-18 02:45:14,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:14,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:45:14,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:45:14,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1364, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:45:14,940 INFO L87 Difference]: Start difference. First operand 16763 states and 53361 transitions. Second operand has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:18,317 INFO L93 Difference]: Finished difference Result 19849 states and 61751 transitions. [2022-01-18 02:45:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 02:45:18,317 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:18,354 INFO L225 Difference]: With dead ends: 19849 [2022-01-18 02:45:18,354 INFO L226 Difference]: Without dead ends: 19384 [2022-01-18 02:45:18,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4547 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1968, Invalid=12312, Unknown=0, NotChecked=0, Total=14280 [2022-01-18 02:45:18,356 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1140 mSDsluCounter, 5303 mSDsCounter, 0 mSdLazyCounter, 2654 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 5318 SdHoareTripleChecker+Invalid, 2829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:18,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 5318 Invalid, 2829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2654 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 02:45:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19384 states. [2022-01-18 02:45:18,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19384 to 16931. [2022-01-18 02:45:18,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16931 states, 16930 states have (on average 3.1819846426461904) internal successors, (53871), 16930 states have internal predecessors, (53871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16931 states to 16931 states and 53871 transitions. [2022-01-18 02:45:18,643 INFO L78 Accepts]: Start accepts. Automaton has 16931 states and 53871 transitions. Word has length 74 [2022-01-18 02:45:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:18,643 INFO L470 AbstractCegarLoop]: Abstraction has 16931 states and 53871 transitions. [2022-01-18 02:45:18,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16931 states and 53871 transitions. [2022-01-18 02:45:18,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:18,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:18,668 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:18,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-01-18 02:45:18,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable110 [2022-01-18 02:45:18,868 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:18,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1496515595, now seen corresponding path program 109 times [2022-01-18 02:45:18,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:18,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278265715] [2022-01-18 02:45:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:18,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:19,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:19,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278265715] [2022-01-18 02:45:19,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278265715] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:19,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073476674] [2022-01-18 02:45:19,057 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:45:19,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:19,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:19,058 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:19,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 02:45:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:19,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:19,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:20,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073476674] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:20,105 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:20,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 40 [2022-01-18 02:45:20,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107045720] [2022-01-18 02:45:20,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:20,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-01-18 02:45:20,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:20,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-01-18 02:45:20,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 02:45:20,106 INFO L87 Difference]: Start difference. First operand 16931 states and 53871 transitions. Second operand has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:22,693 INFO L93 Difference]: Finished difference Result 19587 states and 61103 transitions. [2022-01-18 02:45:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 02:45:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:22,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:22,731 INFO L225 Difference]: With dead ends: 19587 [2022-01-18 02:45:22,731 INFO L226 Difference]: Without dead ends: 19434 [2022-01-18 02:45:22,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1177, Invalid=8723, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 02:45:22,732 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1011 mSDsluCounter, 5185 mSDsCounter, 0 mSdLazyCounter, 2485 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 5213 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:22,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1011 Valid, 5213 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2485 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:45:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19434 states. [2022-01-18 02:45:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19434 to 16915. [2022-01-18 02:45:22,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16915 states, 16914 states have (on average 3.1814473217452997) internal successors, (53811), 16914 states have internal predecessors, (53811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16915 states to 16915 states and 53811 transitions. [2022-01-18 02:45:23,026 INFO L78 Accepts]: Start accepts. Automaton has 16915 states and 53811 transitions. Word has length 74 [2022-01-18 02:45:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:23,026 INFO L470 AbstractCegarLoop]: Abstraction has 16915 states and 53811 transitions. [2022-01-18 02:45:23,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.65) internal successors, (146), 40 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:23,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16915 states and 53811 transitions. [2022-01-18 02:45:23,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:23,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:23,051 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:23,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-01-18 02:45:23,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-01-18 02:45:23,251 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:23,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash 980956341, now seen corresponding path program 110 times [2022-01-18 02:45:23,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:23,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537512229] [2022-01-18 02:45:23,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:23,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:23,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:23,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537512229] [2022-01-18 02:45:23,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537512229] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:23,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265137534] [2022-01-18 02:45:23,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:45:23,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:23,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:23,436 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:23,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 02:45:23,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:45:23,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:23,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:23,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:23,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:23,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:24,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265137534] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:24,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:24,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:45:24,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336736040] [2022-01-18 02:45:24,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:24,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:45:24,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:24,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:45:24,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:45:24,438 INFO L87 Difference]: Start difference. First operand 16915 states and 53811 transitions. Second operand has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:25,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:25,507 INFO L93 Difference]: Finished difference Result 19998 states and 62606 transitions. [2022-01-18 02:45:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 02:45:25,507 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:25,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:25,544 INFO L225 Difference]: With dead ends: 19998 [2022-01-18 02:45:25,544 INFO L226 Difference]: Without dead ends: 19692 [2022-01-18 02:45:25,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=524, Invalid=3898, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 02:45:25,545 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 517 mSDsluCounter, 2944 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:25,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 2984 Invalid, 1156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 02:45:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19692 states. [2022-01-18 02:45:25,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19692 to 16915. [2022-01-18 02:45:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16915 states, 16914 states have (on average 3.1812108312640417) internal successors, (53807), 16914 states have internal predecessors, (53807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16915 states to 16915 states and 53807 transitions. [2022-01-18 02:45:25,853 INFO L78 Accepts]: Start accepts. Automaton has 16915 states and 53807 transitions. Word has length 74 [2022-01-18 02:45:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:25,853 INFO L470 AbstractCegarLoop]: Abstraction has 16915 states and 53807 transitions. [2022-01-18 02:45:25,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 16915 states and 53807 transitions. [2022-01-18 02:45:25,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:25,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:25,878 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:25,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:26,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-01-18 02:45:26,079 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:26,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1763425597, now seen corresponding path program 111 times [2022-01-18 02:45:26,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:26,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172429974] [2022-01-18 02:45:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:26,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:26,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:26,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172429974] [2022-01-18 02:45:26,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172429974] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:26,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159280658] [2022-01-18 02:45:26,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:45:26,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:26,260 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:26,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 02:45:26,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:45:26,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:26,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:26,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:26,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:27,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:27,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159280658] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:27,319 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:27,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 38 [2022-01-18 02:45:27,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850541866] [2022-01-18 02:45:27,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:27,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-18 02:45:27,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:27,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-18 02:45:27,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 02:45:27,320 INFO L87 Difference]: Start difference. First operand 16915 states and 53807 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:29,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:29,998 INFO L93 Difference]: Finished difference Result 20288 states and 63408 transitions. [2022-01-18 02:45:29,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 02:45:29,998 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:29,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:30,042 INFO L225 Difference]: With dead ends: 20288 [2022-01-18 02:45:30,042 INFO L226 Difference]: Without dead ends: 20186 [2022-01-18 02:45:30,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2768 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1037, Invalid=8469, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 02:45:30,043 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 743 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:30,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [743 Valid, 3270 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:45:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20186 states. [2022-01-18 02:45:30,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20186 to 17043. [2022-01-18 02:45:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17043 states, 17042 states have (on average 3.1829010679497713) internal successors, (54243), 17042 states have internal predecessors, (54243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:30,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17043 states to 17043 states and 54243 transitions. [2022-01-18 02:45:30,404 INFO L78 Accepts]: Start accepts. Automaton has 17043 states and 54243 transitions. Word has length 74 [2022-01-18 02:45:30,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:30,404 INFO L470 AbstractCegarLoop]: Abstraction has 17043 states and 54243 transitions. [2022-01-18 02:45:30,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:30,404 INFO L276 IsEmpty]: Start isEmpty. Operand 17043 states and 54243 transitions. [2022-01-18 02:45:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:30,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:30,432 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:30,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 02:45:30,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-01-18 02:45:30,633 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1784142983, now seen corresponding path program 112 times [2022-01-18 02:45:30,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:30,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246952668] [2022-01-18 02:45:30,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:30,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:30,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:30,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246952668] [2022-01-18 02:45:30,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246952668] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:30,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943279270] [2022-01-18 02:45:30,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:45:30,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:30,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:30,823 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:30,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 02:45:30,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:45:30,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:30,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:30,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:31,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:31,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943279270] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:31,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:31,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:45:31,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793992956] [2022-01-18 02:45:31,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:31,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:45:31,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:45:31,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1303, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:45:31,947 INFO L87 Difference]: Start difference. First operand 17043 states and 54243 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:34,577 INFO L93 Difference]: Finished difference Result 20276 states and 63379 transitions. [2022-01-18 02:45:34,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 02:45:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:34,621 INFO L225 Difference]: With dead ends: 20276 [2022-01-18 02:45:34,621 INFO L226 Difference]: Without dead ends: 20174 [2022-01-18 02:45:34,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2060 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=910, Invalid=6746, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 02:45:34,622 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 739 mSDsluCounter, 3085 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 1673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:34,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 3162 Invalid, 1673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:45:34,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20174 states. [2022-01-18 02:45:34,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20174 to 17099. [2022-01-18 02:45:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17099 states, 17098 states have (on average 3.1838226693180487) internal successors, (54437), 17098 states have internal predecessors, (54437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:34,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17099 states to 17099 states and 54437 transitions. [2022-01-18 02:45:34,977 INFO L78 Accepts]: Start accepts. Automaton has 17099 states and 54437 transitions. Word has length 74 [2022-01-18 02:45:34,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:34,977 INFO L470 AbstractCegarLoop]: Abstraction has 17099 states and 54437 transitions. [2022-01-18 02:45:34,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:34,977 INFO L276 IsEmpty]: Start isEmpty. Operand 17099 states and 54437 transitions. [2022-01-18 02:45:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:35,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:35,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:35,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-01-18 02:45:35,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:35,206 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:35,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1139642221, now seen corresponding path program 113 times [2022-01-18 02:45:35,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:35,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203551255] [2022-01-18 02:45:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:35,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:35,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203551255] [2022-01-18 02:45:35,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203551255] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197697725] [2022-01-18 02:45:35,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:45:35,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:35,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:35,417 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:35,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 02:45:35,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:45:35,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:35,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:35,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:35,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:36,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:36,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197697725] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:36,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:36,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:45:36,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459107425] [2022-01-18 02:45:36,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:36,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:45:36,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:36,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:45:36,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:45:36,564 INFO L87 Difference]: Start difference. First operand 17099 states and 54437 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:43,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:45:43,179 INFO L93 Difference]: Finished difference Result 24251 states and 74436 transitions. [2022-01-18 02:45:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-01-18 02:45:43,179 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-18 02:45:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:45:43,299 INFO L225 Difference]: With dead ends: 24251 [2022-01-18 02:45:43,299 INFO L226 Difference]: Without dead ends: 23771 [2022-01-18 02:45:43,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9955 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3705, Invalid=24351, Unknown=0, NotChecked=0, Total=28056 [2022-01-18 02:45:43,300 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 1540 mSDsluCounter, 5292 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1540 SdHoareTripleChecker+Valid, 5252 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:43,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1540 Valid, 5252 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 02:45:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23771 states. [2022-01-18 02:45:43,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23771 to 16883. [2022-01-18 02:45:43,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16883 states, 16882 states have (on average 3.1874777869920625) internal successors, (53811), 16882 states have internal predecessors, (53811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16883 states to 16883 states and 53811 transitions. [2022-01-18 02:45:43,617 INFO L78 Accepts]: Start accepts. Automaton has 16883 states and 53811 transitions. Word has length 74 [2022-01-18 02:45:43,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:45:43,617 INFO L470 AbstractCegarLoop]: Abstraction has 16883 states and 53811 transitions. [2022-01-18 02:45:43,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:45:43,617 INFO L276 IsEmpty]: Start isEmpty. Operand 16883 states and 53811 transitions. [2022-01-18 02:45:43,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 02:45:43,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:45:43,642 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:45:43,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-01-18 02:45:43,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:43,843 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:45:43,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:45:43,844 INFO L85 PathProgramCache]: Analyzing trace with hash -46628321, now seen corresponding path program 114 times [2022-01-18 02:45:43,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:45:43,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775469989] [2022-01-18 02:45:43,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:45:43,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:45:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:45:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:44,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:45:44,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775469989] [2022-01-18 02:45:44,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775469989] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:45:44,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524336277] [2022-01-18 02:45:44,055 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:45:44,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:45:44,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:45:44,056 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:45:44,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 02:45:44,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:45:44,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:45:44,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 02:45:44,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:45:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:44,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:45:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:45:45,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524336277] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:45:45,302 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:45:45,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 39 [2022-01-18 02:45:45,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394345151] [2022-01-18 02:45:45,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:45:45,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 02:45:45,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:45:45,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 02:45:45,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1322, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 02:45:45,303 INFO L87 Difference]: Start difference. First operand 16883 states and 53811 transitions. Second operand has 39 states, 39 states have (on average 3.717948717948718) internal successors, (145), 39 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 02:45:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-01-18 02:45:49,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 125 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3333 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1087, Invalid=9833, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 02:45:49,131 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 596 mSDsluCounter, 3355 mSDsCounter, 0 mSdLazyCounter, 1903 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 3498 SdHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:45:49,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 3498 Invalid, 2039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1903 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 02:45:49,132 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 02:45:49,140 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:45:49,140 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 02:45:49,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-01-18 02:45:49,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2022-01-18 02:45:49,333 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (16883states) and FLOYD_HOARE automaton (currently 82 states, 39 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 105 known predicates. [2022-01-18 02:45:49,334 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 02:45:49,334 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 02:45:49,337 INFO L732 BasicCegarLoop]: Path program histogram: [114, 1, 1, 1] [2022-01-18 02:45:49,338 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 02:45:49,339 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 02:45:49,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 02:45:49 BasicIcfg [2022-01-18 02:45:49,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 02:45:49,340 INFO L158 Benchmark]: Toolchain (without parser) took 707491.59ms. Allocated memory was 358.6MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 305.3MB in the beginning and 915.3MB in the end (delta: -610.0MB). Peak memory consumption was 639.1MB. Max. memory is 16.0GB. [2022-01-18 02:45:49,340 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 322.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:45:49,340 INFO L158 Benchmark]: CACSL2BoogieTranslator took 205.36ms. Allocated memory is still 358.6MB. Free memory was 305.1MB in the beginning and 331.1MB in the end (delta: -25.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.0GB. [2022-01-18 02:45:49,340 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.17ms. Allocated memory is still 358.6MB. Free memory was 331.1MB in the beginning and 329.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 02:45:49,341 INFO L158 Benchmark]: Boogie Preprocessor took 16.98ms. Allocated memory is still 358.6MB. Free memory was 329.1MB in the beginning and 328.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 02:45:49,341 INFO L158 Benchmark]: RCFGBuilder took 295.62ms. Allocated memory is still 358.6MB. Free memory was 328.1MB in the beginning and 314.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 02:45:49,341 INFO L158 Benchmark]: TraceAbstraction took 706940.92ms. Allocated memory was 358.6MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 313.4MB in the beginning and 915.3MB in the end (delta: -601.9MB). Peak memory consumption was 649.0MB. Max. memory is 16.0GB. [2022-01-18 02:45:49,341 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 322.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 205.36ms. Allocated memory is still 358.6MB. Free memory was 305.1MB in the beginning and 331.1MB in the end (delta: -25.9MB). Peak memory consumption was 17.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.17ms. Allocated memory is still 358.6MB. Free memory was 331.1MB in the beginning and 329.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.98ms. Allocated memory is still 358.6MB. Free memory was 329.1MB in the beginning and 328.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 295.62ms. Allocated memory is still 358.6MB. Free memory was 328.1MB in the beginning and 314.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 706940.92ms. Allocated memory was 358.6MB in the beginning and 1.6GB in the end (delta: 1.2GB). Free memory was 313.4MB in the beginning and 915.3MB in the end (delta: -601.9MB). Peak memory consumption was 649.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (16883states) and FLOYD_HOARE automaton (currently 82 states, 39 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 105 known predicates. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (16883states) and FLOYD_HOARE automaton (currently 82 states, 39 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 105 known predicates. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (16883states) and FLOYD_HOARE automaton (currently 82 states, 39 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 105 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 98 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 706.8s, OverallIterations: 117, TraceHistogramMax: 2, PathProgramHistogramMax: 114, EmptinessCheckTime: 1.1s, AutomataDifference: 518.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123726 SdHoareTripleChecker+Valid, 101.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 123726 mSDsluCounter, 515256 SdHoareTripleChecker+Invalid, 86.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 512301 mSDsCounter, 18724 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 263646 IncrementalHoareTripleChecker+Invalid, 282370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18724 mSolverCounterUnsat, 28206 mSDtfsCounter, 263646 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28895 GetRequests, 14055 SyntacticMatches, 218 SemanticMatches, 14621 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782012 ImplicationChecksByTransitivity, 456.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17099occurred in iteration=115, InterpolantAutomatonStates: 12342, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.0s AutomataMinimizationTime, 116 MinimizatonAttempts, 339379 StatesRemovedByMinimization, 115 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 138.8s InterpolantComputationTime, 16734 NumberOfCodeBlocks, 16620 NumberOfCodeBlocksAsserted, 364 NumberOfCheckSat, 24692 ConstructedInterpolants, 0 QuantifiedInterpolants, 210798 SizeOfPredicates, 1531 NumberOfNonLiveVariables, 18037 ConjunctsInSsa, 2748 ConjunctsInUnsatCore, 347 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2037 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown