/usr/bin/java -Xmx8000000000 -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/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:49:04,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:49:04,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:49:04,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:49:04,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:49:04,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:49:04,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:49:04,882 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 [2022-03-03 17:49:04,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:49:04,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:49:04,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:49:04,909 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:49:04,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:49:04,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:49:04,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:49:04,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:49:04,910 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:49:04,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:49:04,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:49:04,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:49:04,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:49:04,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:49:04,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:49:04,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:49:04,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:49:05,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:49:05,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:49:05,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:49:05,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:49:05,138 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:49:05,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-03 17:49:05,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ec03966/3d593b7438484748811284f5018387f1/FLAG9f2edcfb3 [2022-03-03 17:49:05,581 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:49:05,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-03-03 17:49:05,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ec03966/3d593b7438484748811284f5018387f1/FLAG9f2edcfb3 [2022-03-03 17:49:05,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ec03966/3d593b7438484748811284f5018387f1 [2022-03-03 17:49:05,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:49:05,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:49:05,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:49:05,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:49:05,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:49:05,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728bee28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05, skipping insertion in model container [2022-03-03 17:49:05,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:49:05,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:49:05,799 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/test-context1.wvr.c[2433,2446] [2022-03-03 17:49:05,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:49:05,815 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:49:05,841 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/test-context1.wvr.c[2433,2446] [2022-03-03 17:49:05,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:49:05,859 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:49:05,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05 WrapperNode [2022-03-03 17:49:05,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:49:05,861 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:49:05,861 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:49:05,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:49:05,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,901 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-03-03 17:49:05,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:49:05,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:49:05,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:49:05,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:49:05,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:49:05,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:49:05,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:49:05,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:49:05,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (1/1) ... [2022-03-03 17:49:05,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:49:05,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:05,973 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) [2022-03-03 17:49:05,991 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 [2022-03-03 17:49:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:49:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:49:06,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:49:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:49:06,007 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:49:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:49:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:49:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:49:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:49:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:49:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-03 17:49:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:49:06,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:49:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:49:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:49:06,009 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:49:06,112 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:49:06,113 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:49:06,282 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:49:06,343 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:49:06,347 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-03 17:49:06,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:49:06 BoogieIcfgContainer [2022-03-03 17:49:06,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:49:06,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:49:06,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:49:06,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:49:06,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:49:05" (1/3) ... [2022-03-03 17:49:06,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1c9029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:49:06, skipping insertion in model container [2022-03-03 17:49:06,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:49:05" (2/3) ... [2022-03-03 17:49:06,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1c9029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:49:06, skipping insertion in model container [2022-03-03 17:49:06,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:49:06" (3/3) ... [2022-03-03 17:49:06,365 INFO L111 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-03-03 17:49:06,368 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:49:06,368 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:49:06,368 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:49:06,368 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:49:06,408 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,409 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,410 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,411 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,412 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,413 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,414 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,416 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,417 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,417 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,418 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:49:06,420 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:49:06,463 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:49:06,472 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, mLazyFiniteAutomaton=false, 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:49:06,472 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:49:06,485 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 116 transitions, 248 flow [2022-03-03 17:49:06,532 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-03-03 17:49:06,546 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:06,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:06,547 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:06,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:06,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1680176795, now seen corresponding path program 1 times [2022-03-03 17:49:06,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:06,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538257802] [2022-03-03 17:49:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:06,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:06,752 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:06,753 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538257802] [2022-03-03 17:49:06,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538257802] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:06,754 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:06,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:49:06,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215990761] [2022-03-03 17:49:06,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:06,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:49:06,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:49:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:49:06,788 INFO L87 Difference]: Start difference. First operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 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 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:06,845 INFO L93 Difference]: Finished difference Result 331 states and 738 transitions. [2022-03-03 17:49:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:49:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-03-03 17:49:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:06,855 INFO L225 Difference]: With dead ends: 331 [2022-03-03 17:49:06,856 INFO L226 Difference]: Without dead ends: 328 [2022-03-03 17:49:06,857 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 [2022-03-03 17:49:06,859 INFO L933 BasicCegarLoop]: 93 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, 93 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 [2022-03-03 17:49:06,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-03-03 17:49:06,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-03-03 17:49:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.2477064220183487) internal successors, (735), 327 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-03-03 17:49:06,926 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 81 [2022-03-03 17:49:06,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:06,926 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-03-03 17:49:06,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:06,926 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-03-03 17:49:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-03-03 17:49:06,930 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:06,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:06,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:49:06,931 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:06,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash -415887122, now seen corresponding path program 1 times [2022-03-03 17:49:06,932 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:06,932 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470857431] [2022-03-03 17:49:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:07,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:07,115 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:07,115 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470857431] [2022-03-03 17:49:07,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470857431] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:07,115 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:07,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:49:07,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658416245] [2022-03-03 17:49:07,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:07,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:49:07,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:07,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:49:07,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:49:07,118 INFO L87 Difference]: Start difference. First operand 328 states and 735 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:07,179 INFO L93 Difference]: Finished difference Result 551 states and 1322 transitions. [2022-03-03 17:49:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:49:07,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-03-03 17:49:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:07,184 INFO L225 Difference]: With dead ends: 551 [2022-03-03 17:49:07,184 INFO L226 Difference]: Without dead ends: 421 [2022-03-03 17:49:07,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:49:07,185 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 16 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:07,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:07,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-03-03 17:49:07,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 359. [2022-03-03 17:49:07,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.2849162011173183) internal successors, (818), 358 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 818 transitions. [2022-03-03 17:49:07,197 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 818 transitions. Word has length 83 [2022-03-03 17:49:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:07,197 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 818 transitions. [2022-03-03 17:49:07,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,197 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 818 transitions. [2022-03-03 17:49:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-03 17:49:07,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:07,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:07,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:49:07,199 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:07,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:07,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1146128612, now seen corresponding path program 1 times [2022-03-03 17:49:07,200 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:07,200 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458758502] [2022-03-03 17:49:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:07,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:07,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:07,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458758502] [2022-03-03 17:49:07,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458758502] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:07,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:07,263 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:49:07,263 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852535931] [2022-03-03 17:49:07,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:07,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:49:07,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:49:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:49:07,264 INFO L87 Difference]: Start difference. First operand 359 states and 818 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:07,276 INFO L93 Difference]: Finished difference Result 494 states and 1120 transitions. [2022-03-03 17:49:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:49:07,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-03-03 17:49:07,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:07,279 INFO L225 Difference]: With dead ends: 494 [2022-03-03 17:49:07,279 INFO L226 Difference]: Without dead ends: 413 [2022-03-03 17:49:07,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:49:07,280 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 15 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:07,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 131 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:07,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-03-03 17:49:07,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-03-03 17:49:07,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.283980582524272) internal successors, (941), 412 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 941 transitions. [2022-03-03 17:49:07,290 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 941 transitions. Word has length 86 [2022-03-03 17:49:07,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:07,290 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 941 transitions. [2022-03-03 17:49:07,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,290 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 941 transitions. [2022-03-03 17:49:07,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-03-03 17:49:07,293 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:07,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:07,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:49:07,294 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:07,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1766674574, now seen corresponding path program 1 times [2022-03-03 17:49:07,295 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:07,295 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534786187] [2022-03-03 17:49:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:07,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:07,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534786187] [2022-03-03 17:49:07,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534786187] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:49:07,449 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:49:07,449 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-03 17:49:07,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734477532] [2022-03-03 17:49:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:49:07,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:49:07,450 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:49:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:49:07,450 INFO L87 Difference]: Start difference. First operand 413 states and 941 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:07,565 INFO L93 Difference]: Finished difference Result 544 states and 1228 transitions. [2022-03-03 17:49:07,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 17:49:07,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-03-03 17:49:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:07,567 INFO L225 Difference]: With dead ends: 544 [2022-03-03 17:49:07,568 INFO L226 Difference]: Without dead ends: 481 [2022-03-03 17:49:07,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-03-03 17:49:07,569 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 234 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:07,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 293 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:49:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-03-03 17:49:07,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 414. [2022-03-03 17:49:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.280871670702179) internal successors, (942), 413 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 942 transitions. [2022-03-03 17:49:07,578 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 942 transitions. Word has length 89 [2022-03-03 17:49:07,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:07,578 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 942 transitions. [2022-03-03 17:49:07,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:07,578 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 942 transitions. [2022-03-03 17:49:07,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-03 17:49:07,579 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:07,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:07,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:49:07,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:07,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash 249833095, now seen corresponding path program 1 times [2022-03-03 17:49:07,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:07,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970526120] [2022-03-03 17:49:07,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:07,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:07,829 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:07,829 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970526120] [2022-03-03 17:49:07,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970526120] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:07,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606555207] [2022-03-03 17:49:07,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:07,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:07,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:07,832 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) [2022-03-03 17:49:07,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:49:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:07,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-03 17:49:07,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:08,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-03 17:49:08,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:08,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:08,459 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-03-03 17:49:08,460 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2022-03-03 17:49:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:08,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606555207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:08,556 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:08,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7] total 15 [2022-03-03 17:49:08,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283176858] [2022-03-03 17:49:08,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:08,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 17:49:08,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 17:49:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:49:08,557 INFO L87 Difference]: Start difference. First operand 414 states and 942 transitions. Second operand has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:08,782 INFO L93 Difference]: Finished difference Result 799 states and 1958 transitions. [2022-03-03 17:49:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 17:49:08,783 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 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 96 [2022-03-03 17:49:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:08,786 INFO L225 Difference]: With dead ends: 799 [2022-03-03 17:49:08,786 INFO L226 Difference]: Without dead ends: 669 [2022-03-03 17:49:08,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-03-03 17:49:08,787 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 229 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:08,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 728 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:49:08,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-03-03 17:49:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 514. [2022-03-03 17:49:08,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.348927875243665) internal successors, (1205), 513 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1205 transitions. [2022-03-03 17:49:08,798 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1205 transitions. Word has length 96 [2022-03-03 17:49:08,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:08,799 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1205 transitions. [2022-03-03 17:49:08,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1205 transitions. [2022-03-03 17:49:08,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-03-03 17:49:08,800 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:08,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:08,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:09,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:09,016 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:09,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:09,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2113726581, now seen corresponding path program 2 times [2022-03-03 17:49:09,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:09,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667687043] [2022-03-03 17:49:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:09,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:09,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:09,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:09,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667687043] [2022-03-03 17:49:09,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667687043] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:09,200 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348295368] [2022-03-03 17:49:09,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:49:09,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:09,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:09,201 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) [2022-03-03 17:49:09,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:49:09,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:49:09,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:09,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-03 17:49:09,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:09,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:49:09,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-03 17:49:09,789 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-03 17:49:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:09,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:09,873 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_89 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_89) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2022-03-03 17:49:09,922 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:09,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-03 17:49:09,926 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-03-03 17:49:10,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:10,282 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348295368] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:10,282 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:10,282 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 30 [2022-03-03 17:49:10,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894823075] [2022-03-03 17:49:10,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:10,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:49:10,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:10,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:49:10,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=696, Unknown=1, NotChecked=54, Total=870 [2022-03-03 17:49:10,287 INFO L87 Difference]: Start difference. First operand 514 states and 1205 transitions. Second operand has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:10,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:10,592 INFO L93 Difference]: Finished difference Result 941 states and 2353 transitions. [2022-03-03 17:49:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-03 17:49:10,593 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 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 96 [2022-03-03 17:49:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:10,596 INFO L225 Difference]: With dead ends: 941 [2022-03-03 17:49:10,596 INFO L226 Difference]: Without dead ends: 811 [2022-03-03 17:49:10,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1366, Unknown=1, NotChecked=78, Total=1722 [2022-03-03 17:49:10,598 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 411 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:10,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 990 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 143 Unchecked, 0.1s Time] [2022-03-03 17:49:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-03-03 17:49:10,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 507. [2022-03-03 17:49:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 2.3537549407114624) internal successors, (1191), 506 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1191 transitions. [2022-03-03 17:49:10,614 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1191 transitions. Word has length 96 [2022-03-03 17:49:10,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:10,614 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1191 transitions. [2022-03-03 17:49:10,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1191 transitions. [2022-03-03 17:49:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-03-03 17:49:10,615 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:10,618 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:10,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-03-03 17:49:10,834 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,SelfDestructingSolverStorable5 [2022-03-03 17:49:10,834 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:10,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:10,835 INFO L85 PathProgramCache]: Analyzing trace with hash -541859669, now seen corresponding path program 3 times [2022-03-03 17:49:10,835 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:10,835 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483943474] [2022-03-03 17:49:10,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:10,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:49:10,894 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:10,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483943474] [2022-03-03 17:49:10,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483943474] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:10,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885101127] [2022-03-03 17:49:10,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:49:10,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:10,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:10,896 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) [2022-03-03 17:49:10,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:49:10,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 17:49:10,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:10,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-03 17:49:10,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:11,410 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-03-03 17:49:11,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-03-03 17:49:11,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:49:11,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:11,586 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-03 17:49:11,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-03-03 17:49:12,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:49:12,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885101127] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:12,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:12,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 14] total 25 [2022-03-03 17:49:12,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355366017] [2022-03-03 17:49:12,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:12,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:49:12,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:12,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:49:12,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:49:12,177 INFO L87 Difference]: Start difference. First operand 507 states and 1191 transitions. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:12,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:12,504 INFO L93 Difference]: Finished difference Result 1645 states and 4033 transitions. [2022-03-03 17:49:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-03 17:49:12,505 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 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 99 [2022-03-03 17:49:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:12,510 INFO L225 Difference]: With dead ends: 1645 [2022-03-03 17:49:12,510 INFO L226 Difference]: Without dead ends: 1369 [2022-03-03 17:49:12,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 17:49:12,511 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 709 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:12,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1000 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 277 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-03-03 17:49:12,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-03-03 17:49:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 876. [2022-03-03 17:49:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.4525714285714284) internal successors, (2146), 875 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2146 transitions. [2022-03-03 17:49:12,533 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2146 transitions. Word has length 99 [2022-03-03 17:49:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:12,533 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2146 transitions. [2022-03-03 17:49:12,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:12,533 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2146 transitions. [2022-03-03 17:49:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-03-03 17:49:12,535 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:12,535 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:12,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:12,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:12,752 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:12,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash -176182363, now seen corresponding path program 4 times [2022-03-03 17:49:12,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:12,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317272439] [2022-03-03 17:49:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:12,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:49:12,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:12,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317272439] [2022-03-03 17:49:12,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317272439] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:12,868 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545861599] [2022-03-03 17:49:12,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:49:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:12,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:12,869 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) [2022-03-03 17:49:12,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:49:12,933 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:49:12,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:12,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-03 17:49:12,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:49:13,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-03 17:49:13,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545861599] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:13,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:13,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-03-03 17:49:13,704 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506519116] [2022-03-03 17:49:13,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:13,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 17:49:13,704 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:13,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 17:49:13,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-03-03 17:49:13,706 INFO L87 Difference]: Start difference. First operand 876 states and 2146 transitions. Second operand has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:13,987 INFO L93 Difference]: Finished difference Result 956 states and 2300 transitions. [2022-03-03 17:49:13,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 17:49:13,987 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 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 102 [2022-03-03 17:49:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:13,990 INFO L225 Difference]: With dead ends: 956 [2022-03-03 17:49:13,990 INFO L226 Difference]: Without dead ends: 764 [2022-03-03 17:49:13,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2022-03-03 17:49:13,991 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 681 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:13,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 769 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:49:13,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-03-03 17:49:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 759. [2022-03-03 17:49:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.4775725593667546) internal successors, (1878), 758 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1878 transitions. [2022-03-03 17:49:14,008 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1878 transitions. Word has length 102 [2022-03-03 17:49:14,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:14,008 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1878 transitions. [2022-03-03 17:49:14,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1878 transitions. [2022-03-03 17:49:14,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-03 17:49:14,011 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:14,011 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:14,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-03 17:49:14,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:14,228 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:14,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:14,228 INFO L85 PathProgramCache]: Analyzing trace with hash 453195598, now seen corresponding path program 5 times [2022-03-03 17:49:14,228 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:14,228 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510849047] [2022-03-03 17:49:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:14,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:14,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510849047] [2022-03-03 17:49:14,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510849047] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:14,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1255032865] [2022-03-03 17:49:14,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:49:14,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:14,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:14,445 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) [2022-03-03 17:49:14,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:49:14,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:49:14,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:14,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 17:49:14,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:14,998 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-03-03 17:49:14,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2022-03-03 17:49:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:49:15,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:15,112 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:49:15,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-03 17:49:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:15,450 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1255032865] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:15,450 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:15,450 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 26 [2022-03-03 17:49:15,450 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712981030] [2022-03-03 17:49:15,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:15,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-03 17:49:15,451 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-03 17:49:15,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-03-03 17:49:15,452 INFO L87 Difference]: Start difference. First operand 759 states and 1878 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:16,078 INFO L93 Difference]: Finished difference Result 2366 states and 6050 transitions. [2022-03-03 17:49:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 17:49:16,079 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 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 109 [2022-03-03 17:49:16,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:16,085 INFO L225 Difference]: With dead ends: 2366 [2022-03-03 17:49:16,085 INFO L226 Difference]: Without dead ends: 1564 [2022-03-03 17:49:16,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=447, Invalid=2975, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 17:49:16,086 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 716 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:16,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1788 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 553 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-03-03 17:49:16,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-03-03 17:49:16,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 668. [2022-03-03 17:49:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 2.3928035982008997) internal successors, (1596), 667 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1596 transitions. [2022-03-03 17:49:16,102 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1596 transitions. Word has length 109 [2022-03-03 17:49:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:16,103 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1596 transitions. [2022-03-03 17:49:16,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1596 transitions. [2022-03-03 17:49:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-03-03 17:49:16,104 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:16,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:16,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:16,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:16,319 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:16,320 INFO L85 PathProgramCache]: Analyzing trace with hash 269033586, now seen corresponding path program 6 times [2022-03-03 17:49:16,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:16,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249381080] [2022-03-03 17:49:16,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:16,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:16,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:16,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249381080] [2022-03-03 17:49:16,557 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249381080] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:16,557 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729399457] [2022-03-03 17:49:16,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:49:16,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:16,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:16,558 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) [2022-03-03 17:49:16,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:49:16,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:49:16,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:16,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-03 17:49:16,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:17,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:49:17,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:49:17,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-03 17:49:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:17,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:17,345 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_194) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-03-03 17:49:17,356 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:17,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-03 17:49:17,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:49:17,692 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:17,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729399457] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:17,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:17,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 38 [2022-03-03 17:49:17,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921032681] [2022-03-03 17:49:17,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:17,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-03 17:49:17,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:17,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-03 17:49:17,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1187, Unknown=1, NotChecked=70, Total=1406 [2022-03-03 17:49:17,694 INFO L87 Difference]: Start difference. First operand 668 states and 1596 transitions. Second operand has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:18,430 INFO L93 Difference]: Finished difference Result 1347 states and 3410 transitions. [2022-03-03 17:49:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-03 17:49:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 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 109 [2022-03-03 17:49:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:18,434 INFO L225 Difference]: With dead ends: 1347 [2022-03-03 17:49:18,435 INFO L226 Difference]: Without dead ends: 1217 [2022-03-03 17:49:18,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=372, Invalid=2711, Unknown=1, NotChecked=108, Total=3192 [2022-03-03 17:49:18,437 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 557 mSDsluCounter, 1941 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:18,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1945 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 599 Invalid, 0 Unknown, 185 Unchecked, 0.3s Time] [2022-03-03 17:49:18,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-03-03 17:49:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 661. [2022-03-03 17:49:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.396969696969697) internal successors, (1582), 660 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:18,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1582 transitions. [2022-03-03 17:49:18,461 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1582 transitions. Word has length 109 [2022-03-03 17:49:18,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:18,461 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1582 transitions. [2022-03-03 17:49:18,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 6.315789473684211) internal successors, (240), 38 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1582 transitions. [2022-03-03 17:49:18,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-03-03 17:49:18,463 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:18,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:18,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:18,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:18,679 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:18,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1926579844, now seen corresponding path program 7 times [2022-03-03 17:49:18,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:18,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433306765] [2022-03-03 17:49:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:18,719 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:18,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433306765] [2022-03-03 17:49:18,719 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433306765] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:18,719 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053598678] [2022-03-03 17:49:18,719 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:49:18,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:18,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:18,720 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) [2022-03-03 17:49:18,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:49:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:18,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-03 17:49:18,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:18,928 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:18,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:49:19,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053598678] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:19,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:19,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-03-03 17:49:19,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107938725] [2022-03-03 17:49:19,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:19,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-03 17:49:19,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-03 17:49:19,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:49:19,068 INFO L87 Difference]: Start difference. First operand 661 states and 1582 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:19,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:19,090 INFO L93 Difference]: Finished difference Result 1753 states and 4401 transitions. [2022-03-03 17:49:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:49:19,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 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 112 [2022-03-03 17:49:19,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:19,096 INFO L225 Difference]: With dead ends: 1753 [2022-03-03 17:49:19,096 INFO L226 Difference]: Without dead ends: 1558 [2022-03-03 17:49:19,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-03-03 17:49:19,097 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 140 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:19,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 326 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:19,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2022-03-03 17:49:19,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1159. [2022-03-03 17:49:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5673575129533677) internal successors, (2973), 1158 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2973 transitions. [2022-03-03 17:49:19,121 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2973 transitions. Word has length 112 [2022-03-03 17:49:19,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:19,121 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2973 transitions. [2022-03-03 17:49:19,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:19,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2973 transitions. [2022-03-03 17:49:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-03-03 17:49:19,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:19,125 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:19,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:19,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:19,342 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:19,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:19,342 INFO L85 PathProgramCache]: Analyzing trace with hash 856762834, now seen corresponding path program 8 times [2022-03-03 17:49:19,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:19,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547171836] [2022-03-03 17:49:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:19,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-03 17:49:19,502 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:19,502 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547171836] [2022-03-03 17:49:19,502 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547171836] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:19,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091512645] [2022-03-03 17:49:19,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:49:19,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:19,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:19,504 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) [2022-03-03 17:49:19,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:49:19,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:49:19,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:19,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 17:49:19,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:20,051 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-03 17:49:20,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-03 17:49:20,500 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091512645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:20,500 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:20,500 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-03-03 17:49:20,500 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456322677] [2022-03-03 17:49:20,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:20,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-03 17:49:20,501 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:20,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-03 17:49:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2022-03-03 17:49:20,502 INFO L87 Difference]: Start difference. First operand 1159 states and 2973 transitions. Second operand has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:20,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:20,995 INFO L93 Difference]: Finished difference Result 1723 states and 4315 transitions. [2022-03-03 17:49:20,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-03 17:49:20,995 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 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 115 [2022-03-03 17:49:20,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:21,000 INFO L225 Difference]: With dead ends: 1723 [2022-03-03 17:49:21,000 INFO L226 Difference]: Without dead ends: 1372 [2022-03-03 17:49:21,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 17:49:21,001 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 900 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:21,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 1014 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:49:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-03 17:49:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1166. [2022-03-03 17:49:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.5579399141630903) internal successors, (2980), 1165 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2980 transitions. [2022-03-03 17:49:21,025 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2980 transitions. Word has length 115 [2022-03-03 17:49:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:21,026 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2980 transitions. [2022-03-03 17:49:21,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2980 transitions. [2022-03-03 17:49:21,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-03 17:49:21,028 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:21,028 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:21,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:21,245 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,SelfDestructingSolverStorable11 [2022-03-03 17:49:21,245 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:21,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1114783911, now seen corresponding path program 9 times [2022-03-03 17:49:21,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:21,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609681450] [2022-03-03 17:49:21,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:21,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:21,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:21,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609681450] [2022-03-03 17:49:21,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609681450] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:21,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643542589] [2022-03-03 17:49:21,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:49:21,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:21,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:21,596 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) [2022-03-03 17:49:21,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:49:21,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 17:49:21,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:21,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-03 17:49:21,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:22,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:49:22,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:49:22,782 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:49:23,279 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-03 17:49:23,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:49:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:49:23,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:25,065 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:25,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2022-03-03 17:49:25,078 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-03 17:49:25,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 297 [2022-03-03 17:49:25,087 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-03 17:49:25,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 286 treesize of output 226 [2022-03-03 17:49:25,097 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-03 17:49:25,097 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 196 [2022-03-03 17:49:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-03 17:49:25,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643542589] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:25,657 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:25,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 25] total 64 [2022-03-03 17:49:25,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913234582] [2022-03-03 17:49:25,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:25,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-03-03 17:49:25,659 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-03-03 17:49:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=3523, Unknown=53, NotChecked=0, Total=4032 [2022-03-03 17:49:25,661 INFO L87 Difference]: Start difference. First operand 1166 states and 2980 transitions. Second operand has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:28,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:28,175 INFO L93 Difference]: Finished difference Result 5035 states and 13427 transitions. [2022-03-03 17:49:28,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 17:49:28,175 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 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 122 [2022-03-03 17:49:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:28,192 INFO L225 Difference]: With dead ends: 5035 [2022-03-03 17:49:28,192 INFO L226 Difference]: Without dead ends: 4642 [2022-03-03 17:49:28,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3642 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1796, Invalid=11033, Unknown=53, NotChecked=0, Total=12882 [2022-03-03 17:49:28,195 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 2185 mSDsluCounter, 5006 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 4754 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1083 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:28,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 4754 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 865 Invalid, 0 Unknown, 1083 Unchecked, 0.3s Time] [2022-03-03 17:49:28,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4642 states. [2022-03-03 17:49:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4642 to 2797. [2022-03-03 17:49:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 2.724606580829757) internal successors, (7618), 2796 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 7618 transitions. [2022-03-03 17:49:28,262 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 7618 transitions. Word has length 122 [2022-03-03 17:49:28,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:28,262 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 7618 transitions. [2022-03-03 17:49:28,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:28,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 7618 transitions. [2022-03-03 17:49:28,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-03 17:49:28,267 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:28,267 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:28,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:28,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 17:49:28,483 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:28,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:28,484 INFO L85 PathProgramCache]: Analyzing trace with hash -776672213, now seen corresponding path program 10 times [2022-03-03 17:49:28,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:28,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000909698] [2022-03-03 17:49:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:28,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:28,785 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:28,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000909698] [2022-03-03 17:49:28,785 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000909698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:28,785 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326320134] [2022-03-03 17:49:28,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:49:28,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:28,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:28,787 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) [2022-03-03 17:49:28,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:49:28,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:49:28,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:28,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-03 17:49:28,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:29,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-03 17:49:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:49:29,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:29,529 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:49:29,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-03 17:49:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:49:29,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326320134] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:29,787 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:29,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 11] total 30 [2022-03-03 17:49:29,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792461376] [2022-03-03 17:49:29,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:29,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 17:49:29,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 17:49:29,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-03-03 17:49:29,789 INFO L87 Difference]: Start difference. First operand 2797 states and 7618 transitions. Second operand has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:31,188 INFO L93 Difference]: Finished difference Result 10691 states and 29352 transitions. [2022-03-03 17:49:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-03-03 17:49:31,189 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 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 122 [2022-03-03 17:49:31,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:31,216 INFO L225 Difference]: With dead ends: 10691 [2022-03-03 17:49:31,216 INFO L226 Difference]: Without dead ends: 8450 [2022-03-03 17:49:31,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 223 SyntacticMatches, 14 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3854 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=987, Invalid=9113, Unknown=0, NotChecked=0, Total=10100 [2022-03-03 17:49:31,219 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1446 mSDsluCounter, 2876 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:31,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2838 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 17:49:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8450 states. [2022-03-03 17:49:31,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8450 to 2092. [2022-03-03 17:49:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2092 states, 2091 states have (on average 2.6652319464371113) internal successors, (5573), 2091 states have internal predecessors, (5573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:31,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2092 states to 2092 states and 5573 transitions. [2022-03-03 17:49:31,291 INFO L78 Accepts]: Start accepts. Automaton has 2092 states and 5573 transitions. Word has length 122 [2022-03-03 17:49:31,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:31,292 INFO L470 AbstractCegarLoop]: Abstraction has 2092 states and 5573 transitions. [2022-03-03 17:49:31,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:31,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2092 states and 5573 transitions. [2022-03-03 17:49:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-03-03 17:49:31,296 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:31,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:31,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:31,511 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,SelfDestructingSolverStorable13 [2022-03-03 17:49:31,511 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash 328572843, now seen corresponding path program 11 times [2022-03-03 17:49:31,512 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:31,512 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045544843] [2022-03-03 17:49:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:31,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:31,922 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:31,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045544843] [2022-03-03 17:49:31,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045544843] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:31,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226661462] [2022-03-03 17:49:31,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:49:31,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:31,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:31,924 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) [2022-03-03 17:49:31,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:49:32,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 17:49:32,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:32,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-03 17:49:32,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:32,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:49:32,144 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:49:32,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:49:32,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:49:32,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:49:32,532 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:49:32,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:32,587 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_352 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_352) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-03-03 17:49:32,596 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:32,596 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-03 17:49:32,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:49:33,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:49:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:49:33,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226661462] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:33,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:33,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 39 [2022-03-03 17:49:33,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102776753] [2022-03-03 17:49:33,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:33,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-03 17:49:33,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-03 17:49:33,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1264, Unknown=1, NotChecked=72, Total=1482 [2022-03-03 17:49:33,056 INFO L87 Difference]: Start difference. First operand 2092 states and 5573 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:34,053 INFO L93 Difference]: Finished difference Result 4030 states and 10893 transitions. [2022-03-03 17:49:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:49:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 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 122 [2022-03-03 17:49:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:34,062 INFO L225 Difference]: With dead ends: 4030 [2022-03-03 17:49:34,062 INFO L226 Difference]: Without dead ends: 3884 [2022-03-03 17:49:34,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=575, Invalid=4540, Unknown=1, NotChecked=140, Total=5256 [2022-03-03 17:49:34,064 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 811 mSDsluCounter, 2412 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:34,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 2386 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 934 Invalid, 0 Unknown, 231 Unchecked, 0.3s Time] [2022-03-03 17:49:34,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-03-03 17:49:34,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 2046. [2022-03-03 17:49:34,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 2045 states have (on average 2.6533007334963323) internal successors, (5426), 2045 states have internal predecessors, (5426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:34,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 5426 transitions. [2022-03-03 17:49:34,110 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 5426 transitions. Word has length 122 [2022-03-03 17:49:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:34,110 INFO L470 AbstractCegarLoop]: Abstraction has 2046 states and 5426 transitions. [2022-03-03 17:49:34,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 5426 transitions. [2022-03-03 17:49:34,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-03-03 17:49:34,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:34,114 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:34,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:34,330 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,SelfDestructingSolverStorable14 [2022-03-03 17:49:34,331 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash -192365041, now seen corresponding path program 12 times [2022-03-03 17:49:34,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:34,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488471730] [2022-03-03 17:49:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:49:34,381 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:34,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488471730] [2022-03-03 17:49:34,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488471730] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:34,381 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114797358] [2022-03-03 17:49:34,382 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:49:34,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:34,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:34,383 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) [2022-03-03 17:49:34,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:49:34,623 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 17:49:34,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:34,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-03 17:49:34,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:49:34,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-03 17:49:34,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114797358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:34,982 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:34,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-03-03 17:49:34,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014534397] [2022-03-03 17:49:34,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:34,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 17:49:34,983 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:34,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 17:49:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:49:34,983 INFO L87 Difference]: Start difference. First operand 2046 states and 5426 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:35,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:35,021 INFO L93 Difference]: Finished difference Result 5115 states and 13883 transitions. [2022-03-03 17:49:35,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-03 17:49:35,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 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 125 [2022-03-03 17:49:35,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:35,031 INFO L225 Difference]: With dead ends: 5115 [2022-03-03 17:49:35,031 INFO L226 Difference]: Without dead ends: 4571 [2022-03-03 17:49:35,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:49:35,031 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 209 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:35,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 310 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2022-03-03 17:49:35,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 3568. [2022-03-03 17:49:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3568 states, 3567 states have (on average 2.747687132043734) internal successors, (9801), 3567 states have internal predecessors, (9801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:35,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 9801 transitions. [2022-03-03 17:49:35,108 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 9801 transitions. Word has length 125 [2022-03-03 17:49:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:35,108 INFO L470 AbstractCegarLoop]: Abstraction has 3568 states and 9801 transitions. [2022-03-03 17:49:35,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 9801 transitions. [2022-03-03 17:49:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-03-03 17:49:35,116 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:35,116 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:35,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:35,332 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,SelfDestructingSolverStorable15 [2022-03-03 17:49:35,332 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:35,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash -48474905, now seen corresponding path program 13 times [2022-03-03 17:49:35,333 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:35,333 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876562356] [2022-03-03 17:49:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:35,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-03 17:49:35,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:35,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876562356] [2022-03-03 17:49:35,527 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876562356] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:35,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390512691] [2022-03-03 17:49:35,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:49:35,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:35,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:35,528 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) [2022-03-03 17:49:35,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 17:49:35,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:35,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-03 17:49:35,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-03 17:49:36,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-03 17:49:36,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390512691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:36,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:36,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-03-03 17:49:36,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385889430] [2022-03-03 17:49:36,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:36,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 17:49:36,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:36,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 17:49:36,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2022-03-03 17:49:36,770 INFO L87 Difference]: Start difference. First operand 3568 states and 9801 transitions. Second operand has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:37,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:37,481 INFO L93 Difference]: Finished difference Result 2949 states and 7480 transitions. [2022-03-03 17:49:37,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 17:49:37,481 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 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 128 [2022-03-03 17:49:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:37,493 INFO L225 Difference]: With dead ends: 2949 [2022-03-03 17:49:37,493 INFO L226 Difference]: Without dead ends: 1908 [2022-03-03 17:49:37,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1088, Invalid=3882, Unknown=0, NotChecked=0, Total=4970 [2022-03-03 17:49:37,497 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 993 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:37,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [993 Valid, 1529 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:49:37,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-03-03 17:49:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1666. [2022-03-03 17:49:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.601201201201201) internal successors, (4331), 1665 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4331 transitions. [2022-03-03 17:49:37,536 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4331 transitions. Word has length 128 [2022-03-03 17:49:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:37,536 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 4331 transitions. [2022-03-03 17:49:37,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4331 transitions. [2022-03-03 17:49:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:49:37,539 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:37,539 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:37,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:37,747 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,SelfDestructingSolverStorable16 [2022-03-03 17:49:37,747 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 552932526, now seen corresponding path program 14 times [2022-03-03 17:49:37,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:37,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348560874] [2022-03-03 17:49:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:37,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:38,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:38,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348560874] [2022-03-03 17:49:38,137 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348560874] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:38,137 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181778446] [2022-03-03 17:49:38,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:49:38,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:38,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:38,138 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) [2022-03-03 17:49:38,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 17:49:38,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:49:38,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:38,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-03 17:49:38,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:38,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-03 17:49:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:49:38,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:38,949 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:49:38,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-03 17:49:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:49:39,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181778446] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:39,240 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:39,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 47 [2022-03-03 17:49:39,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425502726] [2022-03-03 17:49:39,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:39,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-03 17:49:39,240 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:39,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-03 17:49:39,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 17:49:39,241 INFO L87 Difference]: Start difference. First operand 1666 states and 4331 transitions. Second operand has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:41,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:41,983 INFO L93 Difference]: Finished difference Result 11428 states and 30191 transitions. [2022-03-03 17:49:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-03-03 17:49:41,984 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 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 135 [2022-03-03 17:49:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:41,999 INFO L225 Difference]: With dead ends: 11428 [2022-03-03 17:49:41,999 INFO L226 Difference]: Without dead ends: 7904 [2022-03-03 17:49:42,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 240 SyntacticMatches, 10 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9276 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1756, Invalid=22114, Unknown=0, NotChecked=0, Total=23870 [2022-03-03 17:49:42,001 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2735 mSDsluCounter, 7596 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 7167 SdHoareTripleChecker+Invalid, 3161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:42,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2735 Valid, 7167 Invalid, 3161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 3011 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-03 17:49:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-03-03 17:49:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 976. [2022-03-03 17:49:42,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 2.438974358974359) internal successors, (2378), 975 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:42,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 2378 transitions. [2022-03-03 17:49:42,055 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 2378 transitions. Word has length 135 [2022-03-03 17:49:42,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:42,055 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 2378 transitions. [2022-03-03 17:49:42,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:42,056 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 2378 transitions. [2022-03-03 17:49:42,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:49:42,058 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:42,058 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:42,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:42,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:42,275 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:42,275 INFO L85 PathProgramCache]: Analyzing trace with hash 532157394, now seen corresponding path program 15 times [2022-03-03 17:49:42,275 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:42,275 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999159187] [2022-03-03 17:49:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:42,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:42,784 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:42,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999159187] [2022-03-03 17:49:42,784 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999159187] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:42,784 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532871378] [2022-03-03 17:49:42,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:49:42,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:42,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:42,786 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) [2022-03-03 17:49:42,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 17:49:43,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 17:49:43,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:43,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-03 17:49:43,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:44,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:49:44,316 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:49:44,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:49:44,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-03-03 17:49:45,070 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-03 17:49:45,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:49:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-03 17:49:45,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:46,905 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:46,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-03-03 17:49:46,915 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:46,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 176 [2022-03-03 17:49:46,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:46,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 155 [2022-03-03 17:49:46,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-03-03 17:49:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-03 17:49:48,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532871378] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:48,120 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:48,120 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31, 31] total 79 [2022-03-03 17:49:48,120 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428184303] [2022-03-03 17:49:48,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:48,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-03-03 17:49:48,121 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-03-03 17:49:48,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=5620, Unknown=19, NotChecked=0, Total=6162 [2022-03-03 17:49:48,122 INFO L87 Difference]: Start difference. First operand 976 states and 2378 transitions. Second operand has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:51,769 INFO L93 Difference]: Finished difference Result 7037 states and 18862 transitions. [2022-03-03 17:49:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-03-03 17:49:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 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 135 [2022-03-03 17:49:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:51,781 INFO L225 Difference]: With dead ends: 7037 [2022-03-03 17:49:51,781 INFO L226 Difference]: Without dead ends: 6811 [2022-03-03 17:49:51,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5222 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2188, Invalid=15080, Unknown=24, NotChecked=0, Total=17292 [2022-03-03 17:49:51,783 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2570 mSDsluCounter, 7021 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 7013 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 736 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:51,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2570 Valid, 7013 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1329 Invalid, 0 Unknown, 736 Unchecked, 0.5s Time] [2022-03-03 17:49:51,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6811 states. [2022-03-03 17:49:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6811 to 3828. [2022-03-03 17:49:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 2.7285079696890513) internal successors, (10442), 3827 states have internal predecessors, (10442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 10442 transitions. [2022-03-03 17:49:51,877 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 10442 transitions. Word has length 135 [2022-03-03 17:49:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:51,878 INFO L470 AbstractCegarLoop]: Abstraction has 3828 states and 10442 transitions. [2022-03-03 17:49:51,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 10442 transitions. [2022-03-03 17:49:51,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-03 17:49:51,889 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:51,889 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:51,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:52,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:52,106 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:52,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1359298730, now seen corresponding path program 16 times [2022-03-03 17:49:52,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:52,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653313287] [2022-03-03 17:49:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:49:52,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:52,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653313287] [2022-03-03 17:49:52,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653313287] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:52,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28850383] [2022-03-03 17:49:52,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:49:52,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:52,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:52,541 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) [2022-03-03 17:49:52,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 17:49:52,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:49:52,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:52,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 66 conjunts are in the unsatisfiable core [2022-03-03 17:49:52,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:52,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:49:52,762 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-03 17:49:52,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-03 17:49:53,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-03-03 17:49:53,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-03 17:49:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:49:53,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:53,542 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_530) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2022-03-03 17:49:53,560 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:49:53,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-03 17:49:53,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:49:54,092 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-03-03 17:49:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:49:54,124 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28850383] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:54,124 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:54,124 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 20] total 46 [2022-03-03 17:49:54,124 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909278388] [2022-03-03 17:49:54,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:54,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-03-03 17:49:54,124 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:54,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-03-03 17:49:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1808, Unknown=1, NotChecked=86, Total=2070 [2022-03-03 17:49:54,125 INFO L87 Difference]: Start difference. First operand 3828 states and 10442 transitions. Second operand has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:55,526 INFO L93 Difference]: Finished difference Result 8075 states and 22231 transitions. [2022-03-03 17:49:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 17:49:55,527 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 0 states have call successors, (0), 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 135 [2022-03-03 17:49:55,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:55,540 INFO L225 Difference]: With dead ends: 8075 [2022-03-03 17:49:55,540 INFO L226 Difference]: Without dead ends: 7929 [2022-03-03 17:49:55,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 248 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=748, Invalid=7265, Unknown=1, NotChecked=176, Total=8190 [2022-03-03 17:49:55,542 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1431 mSDsluCounter, 3406 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 3374 SdHoareTripleChecker+Invalid, 1950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 395 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:55,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 3374 Invalid, 1950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1445 Invalid, 0 Unknown, 395 Unchecked, 0.5s Time] [2022-03-03 17:49:55,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7929 states. [2022-03-03 17:49:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7929 to 3221. [2022-03-03 17:49:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 3220 states have (on average 2.710248447204969) internal successors, (8727), 3220 states have internal predecessors, (8727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 8727 transitions. [2022-03-03 17:49:55,630 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 8727 transitions. Word has length 135 [2022-03-03 17:49:55,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:55,631 INFO L470 AbstractCegarLoop]: Abstraction has 3221 states and 8727 transitions. [2022-03-03 17:49:55,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.260869565217392) internal successors, (242), 46 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 8727 transitions. [2022-03-03 17:49:55,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-03-03 17:49:55,637 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:55,637 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:55,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-03-03 17:49:55,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:55,851 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash -819423064, now seen corresponding path program 17 times [2022-03-03 17:49:55,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:55,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937673304] [2022-03-03 17:49:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:55,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:55,909 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:49:55,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:55,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937673304] [2022-03-03 17:49:55,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937673304] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:55,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039921972] [2022-03-03 17:49:55,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:49:55,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:55,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:55,910 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) [2022-03-03 17:49:55,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 17:49:56,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-03-03 17:49:56,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:56,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-03 17:49:56,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:56,259 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:49:56,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-03 17:49:56,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039921972] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:56,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:56,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-03-03 17:49:56,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478912444] [2022-03-03 17:49:56,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:56,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-03 17:49:56,429 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:56,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-03 17:49:56,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:49:56,430 INFO L87 Difference]: Start difference. First operand 3221 states and 8727 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:56,481 INFO L93 Difference]: Finished difference Result 7836 states and 21310 transitions. [2022-03-03 17:49:56,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 17:49:56,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 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 138 [2022-03-03 17:49:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:56,493 INFO L225 Difference]: With dead ends: 7836 [2022-03-03 17:49:56,493 INFO L226 Difference]: Without dead ends: 6991 [2022-03-03 17:49:56,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-03-03 17:49:56,494 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 224 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:56,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 416 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:49:56,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6991 states. [2022-03-03 17:49:56,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6991 to 5591. [2022-03-03 17:49:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5591 states, 5590 states have (on average 2.750447227191413) internal successors, (15375), 5590 states have internal predecessors, (15375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5591 states to 5591 states and 15375 transitions. [2022-03-03 17:49:56,589 INFO L78 Accepts]: Start accepts. Automaton has 5591 states and 15375 transitions. Word has length 138 [2022-03-03 17:49:56,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:56,589 INFO L470 AbstractCegarLoop]: Abstraction has 5591 states and 15375 transitions. [2022-03-03 17:49:56,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5591 states and 15375 transitions. [2022-03-03 17:49:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:49:56,599 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:56,599 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:56,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:56,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:56,815 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash -272799818, now seen corresponding path program 18 times [2022-03-03 17:49:56,816 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:56,816 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249116724] [2022-03-03 17:49:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:56,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:49:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 23 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-03-03 17:49:57,070 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:49:57,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249116724] [2022-03-03 17:49:57,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249116724] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:49:57,070 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282292557] [2022-03-03 17:49:57,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:49:57,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:57,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:49:57,072 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) [2022-03-03 17:49:57,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 17:49:57,468 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-03-03 17:49:57,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:49:57,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-03 17:49:57,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:49:57,969 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-03 17:49:57,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:49:58,507 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-03 17:49:58,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282292557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:49:58,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:49:58,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2022-03-03 17:49:58,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304827425] [2022-03-03 17:49:58,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:49:58,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-03-03 17:49:58,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:49:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-03-03 17:49:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2040, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 17:49:58,510 INFO L87 Difference]: Start difference. First operand 5591 states and 15375 transitions. Second operand has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:59,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:49:59,462 INFO L93 Difference]: Finished difference Result 9832 states and 26297 transitions. [2022-03-03 17:49:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 17:49:59,462 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 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 141 [2022-03-03 17:49:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:49:59,476 INFO L225 Difference]: With dead ends: 9832 [2022-03-03 17:49:59,477 INFO L226 Difference]: Without dead ends: 9307 [2022-03-03 17:49:59,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1584, Invalid=5898, Unknown=0, NotChecked=0, Total=7482 [2022-03-03 17:49:59,477 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 2796 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2796 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:49:59,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2796 Valid, 1894 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:49:59,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9307 states. [2022-03-03 17:49:59,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9307 to 4574. [2022-03-03 17:49:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 2.728187185654931) internal successors, (12476), 4573 states have internal predecessors, (12476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:59,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12476 transitions. [2022-03-03 17:49:59,567 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12476 transitions. Word has length 141 [2022-03-03 17:49:59,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:49:59,568 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 12476 transitions. [2022-03-03 17:49:59,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.02) internal successors, (301), 50 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:49:59,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12476 transitions. [2022-03-03 17:49:59,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-03 17:49:59,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:49:59,575 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:49:59,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 17:49:59,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:49:59,791 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:49:59,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:49:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1589161620, now seen corresponding path program 19 times [2022-03-03 17:49:59,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:49:59,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423255109] [2022-03-03 17:49:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:49:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:49:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:00,018 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 33 proven. 61 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-03 17:50:00,018 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:00,018 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423255109] [2022-03-03 17:50:00,019 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423255109] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:00,019 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299156647] [2022-03-03 17:50:00,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:50:00,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:00,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:00,020 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) [2022-03-03 17:50:00,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 17:50:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:00,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-03 17:50:00,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:00,840 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-03 17:50:00,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:01,496 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-03-03 17:50:01,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299156647] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:01,496 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:01,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 58 [2022-03-03 17:50:01,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600759248] [2022-03-03 17:50:01,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:01,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-03-03 17:50:01,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:01,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-03-03 17:50:01,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2664, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 17:50:01,498 INFO L87 Difference]: Start difference. First operand 4574 states and 12476 transitions. Second operand has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:02,518 INFO L93 Difference]: Finished difference Result 3620 states and 9296 transitions. [2022-03-03 17:50:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:50:02,518 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 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 141 [2022-03-03 17:50:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:02,522 INFO L225 Difference]: With dead ends: 3620 [2022-03-03 17:50:02,522 INFO L226 Difference]: Without dead ends: 2537 [2022-03-03 17:50:02,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1721, Invalid=6651, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 17:50:02,523 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1212 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:02,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 2099 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 17:50:02,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-03-03 17:50:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2259. [2022-03-03 17:50:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.6266607617360496) internal successors, (5931), 2258 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 5931 transitions. [2022-03-03 17:50:02,550 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 5931 transitions. Word has length 141 [2022-03-03 17:50:02,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:02,550 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 5931 transitions. [2022-03-03 17:50:02,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 5931 transitions. [2022-03-03 17:50:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:50:02,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:02,554 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:02,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 17:50:02,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:02,771 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:02,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1333837113, now seen corresponding path program 20 times [2022-03-03 17:50:02,771 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:02,771 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013215220] [2022-03-03 17:50:02,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:02,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:03,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:03,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013215220] [2022-03-03 17:50:03,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013215220] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:03,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936204433] [2022-03-03 17:50:03,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:50:03,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:03,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:03,279 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) [2022-03-03 17:50:03,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 17:50:03,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:50:03,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:03,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 56 conjunts are in the unsatisfiable core [2022-03-03 17:50:03,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:04,089 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-03 17:50:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:50:04,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:04,262 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:50:04,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-03 17:50:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-03 17:50:04,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936204433] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:04,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:04,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 15] total 57 [2022-03-03 17:50:04,638 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321481176] [2022-03-03 17:50:04,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:04,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-03 17:50:04,639 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:04,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-03 17:50:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2963, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 17:50:04,640 INFO L87 Difference]: Start difference. First operand 2259 states and 5931 transitions. Second operand has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:08,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:50:08,524 INFO L93 Difference]: Finished difference Result 18188 states and 48276 transitions. [2022-03-03 17:50:08,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-03-03 17:50:08,525 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 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 148 [2022-03-03 17:50:08,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:50:08,547 INFO L225 Difference]: With dead ends: 18188 [2022-03-03 17:50:08,547 INFO L226 Difference]: Without dead ends: 12909 [2022-03-03 17:50:08,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 258 SyntacticMatches, 12 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16850 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2746, Invalid=39484, Unknown=0, NotChecked=0, Total=42230 [2022-03-03 17:50:08,551 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 4243 mSDsluCounter, 7762 mSDsCounter, 0 mSdLazyCounter, 3238 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 7385 SdHoareTripleChecker+Invalid, 3481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 3238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:50:08,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 7385 Invalid, 3481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 3238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-03 17:50:08,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12909 states. [2022-03-03 17:50:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12909 to 1130. [2022-03-03 17:50:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.4526129317980514) internal successors, (2769), 1129 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:08,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2769 transitions. [2022-03-03 17:50:08,628 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2769 transitions. Word has length 148 [2022-03-03 17:50:08,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:50:08,628 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2769 transitions. [2022-03-03 17:50:08,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:08,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2769 transitions. [2022-03-03 17:50:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:50:08,643 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:50:08,643 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:50:08,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-03 17:50:08,847 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,SelfDestructingSolverStorable23 [2022-03-03 17:50:08,847 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:50:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:50:08,848 INFO L85 PathProgramCache]: Analyzing trace with hash -389869621, now seen corresponding path program 21 times [2022-03-03 17:50:08,848 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:50:08,848 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145805274] [2022-03-03 17:50:08,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:50:08,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:50:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:50:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:09,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:50:09,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145805274] [2022-03-03 17:50:09,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145805274] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:50:09,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227485432] [2022-03-03 17:50:09,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:50:09,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:50:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:50:09,419 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) [2022-03-03 17:50:09,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 17:50:09,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-03 17:50:09,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:50:09,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 55 conjunts are in the unsatisfiable core [2022-03-03 17:50:09,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:50:11,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:50:11,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-03-03 17:50:11,593 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-03 17:50:11,593 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 17:50:11,619 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 48 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:11,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:50:12,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:50:12,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-03-03 17:50:12,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-03-03 17:50:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:50:15,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227485432] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:50:15,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:50:15,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 37, 37] total 95 [2022-03-03 17:50:15,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467006770] [2022-03-03 17:50:15,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:50:15,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-03-03 17:50:15,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:50:15,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-03-03 17:50:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=8159, Unknown=0, NotChecked=0, Total=8930 [2022-03-03 17:50:15,440 INFO L87 Difference]: Start difference. First operand 1130 states and 2769 transitions. Second operand has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:50:29,756 WARN L228 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 102 DAG size of output: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:50:58,910 WARN L228 SmtUtils]: Spent 16.47s on a formula simplification. DAG size of input: 61 DAG size of output: 48 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:54:02,985 WARN L228 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 95 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:54:34,383 WARN L228 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 89 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 17:54:59,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:54:59,646 INFO L93 Difference]: Finished difference Result 127041 states and 320089 transitions. [2022-03-03 17:54:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 679 states. [2022-03-03 17:54:59,647 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 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 148 [2022-03-03 17:54:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:54:59,959 INFO L225 Difference]: With dead ends: 127041 [2022-03-03 17:54:59,959 INFO L226 Difference]: Without dead ends: 112908 [2022-03-03 17:54:59,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1724 GetRequests, 598 SyntacticMatches, 361 SemanticMatches, 765 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 406112 ImplicationChecksByTransitivity, 270.5s TimeCoverageRelationStatistics Valid=77108, Invalid=510339, Unknown=75, NotChecked=0, Total=587522 [2022-03-03 17:54:59,999 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 8989 mSDsluCounter, 26540 mSDsCounter, 0 mSdLazyCounter, 3984 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8989 SdHoareTripleChecker+Valid, 21567 SdHoareTripleChecker+Invalid, 28119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 3984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23433 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:54:59,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8989 Valid, 21567 Invalid, 28119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 3984 Invalid, 0 Unknown, 23433 Unchecked, 2.1s Time] [2022-03-03 17:55:00,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112908 states. [2022-03-03 17:55:01,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112908 to 48574. [2022-03-03 17:55:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48574 states, 48573 states have (on average 2.8174088485372533) internal successors, (136850), 48573 states have internal predecessors, (136850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:01,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48574 states to 48574 states and 136850 transitions. [2022-03-03 17:55:01,861 INFO L78 Accepts]: Start accepts. Automaton has 48574 states and 136850 transitions. Word has length 148 [2022-03-03 17:55:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:01,862 INFO L470 AbstractCegarLoop]: Abstraction has 48574 states and 136850 transitions. [2022-03-03 17:55:01,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 48574 states and 136850 transitions. [2022-03-03 17:55:01,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-03-03 17:55:01,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:01,940 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:01,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:02,143 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,SelfDestructingSolverStorable24 [2022-03-03 17:55:02,144 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:02,144 INFO L85 PathProgramCache]: Analyzing trace with hash 726491987, now seen corresponding path program 22 times [2022-03-03 17:55:02,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:02,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840993262] [2022-03-03 17:55:02,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:55:02,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:02,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840993262] [2022-03-03 17:55:02,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840993262] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:02,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332703185] [2022-03-03 17:55:02,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:55:02,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:02,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:02,730 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) [2022-03-03 17:55:02,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 17:55:02,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:55:02,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:02,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 67 conjunts are in the unsatisfiable core [2022-03-03 17:55:02,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:04,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:55:04,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:55:04,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-03 17:55:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:55:04,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:04,643 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_760 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-03-03 17:55:04,661 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:55:04,661 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-03 17:55:04,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:55:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-03 17:55:05,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332703185] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:05,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:05,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 22] total 72 [2022-03-03 17:55:05,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171318319] [2022-03-03 17:55:05,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:05,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-03-03 17:55:05,342 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:05,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-03-03 17:55:05,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=4645, Unknown=1, NotChecked=138, Total=5112 [2022-03-03 17:55:05,343 INFO L87 Difference]: Start difference. First operand 48574 states and 136850 transitions. Second operand has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:08,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:08,274 INFO L93 Difference]: Finished difference Result 101269 states and 279482 transitions. [2022-03-03 17:55:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-03-03 17:55:08,274 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 0 states have call successors, (0), 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 148 [2022-03-03 17:55:08,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:08,613 INFO L225 Difference]: With dead ends: 101269 [2022-03-03 17:55:08,613 INFO L226 Difference]: Without dead ends: 101123 [2022-03-03 17:55:08,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1150, Invalid=14855, Unknown=1, NotChecked=250, Total=16256 [2022-03-03 17:55:08,614 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 1851 mSDsluCounter, 5812 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 5673 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:08,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1851 Valid, 5673 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2745 Invalid, 0 Unknown, 340 Unchecked, 0.9s Time] [2022-03-03 17:55:08,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101123 states. [2022-03-03 17:55:09,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101123 to 47895. [2022-03-03 17:55:09,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47895 states, 47894 states have (on average 2.8156762851296615) internal successors, (134854), 47894 states have internal predecessors, (134854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:09,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47895 states to 47895 states and 134854 transitions. [2022-03-03 17:55:09,864 INFO L78 Accepts]: Start accepts. Automaton has 47895 states and 134854 transitions. Word has length 148 [2022-03-03 17:55:09,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:09,865 INFO L470 AbstractCegarLoop]: Abstraction has 47895 states and 134854 transitions. [2022-03-03 17:55:09,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.708333333333333) internal successors, (339), 72 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:09,865 INFO L276 IsEmpty]: Start isEmpty. Operand 47895 states and 134854 transitions. [2022-03-03 17:55:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-03-03 17:55:10,150 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:10,150 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:10,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:10,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-03 17:55:10,363 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:10,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1336735761, now seen corresponding path program 23 times [2022-03-03 17:55:10,364 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:10,364 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299551704] [2022-03-03 17:55:10,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:10,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-03 17:55:10,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:10,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299551704] [2022-03-03 17:55:10,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299551704] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:10,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698596797] [2022-03-03 17:55:10,578 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:55:10,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:10,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:10,579 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) [2022-03-03 17:55:10,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 17:55:10,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-03 17:55:10,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:10,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-03 17:55:10,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:10,940 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-03 17:55:10,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-03-03 17:55:11,162 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698596797] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:11,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:11,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-03-03 17:55:11,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39697891] [2022-03-03 17:55:11,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:11,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 17:55:11,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:11,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 17:55:11,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:55:11,164 INFO L87 Difference]: Start difference. First operand 47895 states and 134854 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:11,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:11,723 INFO L93 Difference]: Finished difference Result 100523 states and 283158 transitions. [2022-03-03 17:55:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:55:11,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 151 [2022-03-03 17:55:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:12,046 INFO L225 Difference]: With dead ends: 100523 [2022-03-03 17:55:12,047 INFO L226 Difference]: Without dead ends: 95826 [2022-03-03 17:55:12,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-03 17:55:12,050 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 463 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:12,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 384 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:55:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95826 states. [2022-03-03 17:55:13,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95826 to 78644. [2022-03-03 17:55:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78644 states, 78643 states have (on average 2.8689775313759647) internal successors, (225625), 78643 states have internal predecessors, (225625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:14,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78644 states to 78644 states and 225625 transitions. [2022-03-03 17:55:14,196 INFO L78 Accepts]: Start accepts. Automaton has 78644 states and 225625 transitions. Word has length 151 [2022-03-03 17:55:14,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:14,197 INFO L470 AbstractCegarLoop]: Abstraction has 78644 states and 225625 transitions. [2022-03-03 17:55:14,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:14,197 INFO L276 IsEmpty]: Start isEmpty. Operand 78644 states and 225625 transitions. [2022-03-03 17:55:14,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-03-03 17:55:14,340 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:14,340 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:14,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:14,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:14,541 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:14,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:14,541 INFO L85 PathProgramCache]: Analyzing trace with hash -339287545, now seen corresponding path program 24 times [2022-03-03 17:55:14,541 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:14,541 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678341579] [2022-03-03 17:55:14,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:14,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-03 17:55:14,839 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:14,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678341579] [2022-03-03 17:55:14,839 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678341579] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:14,839 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114077268] [2022-03-03 17:55:14,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:55:14,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:14,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:14,840 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) [2022-03-03 17:55:14,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 17:55:15,451 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-03 17:55:15,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:15,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 17:55:15,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 51 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-03 17:55:16,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-03-03 17:55:16,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114077268] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:16,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:16,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 62 [2022-03-03 17:55:16,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540565874] [2022-03-03 17:55:16,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:16,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-03 17:55:16,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:16,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-03 17:55:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=3181, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:55:16,925 INFO L87 Difference]: Start difference. First operand 78644 states and 225625 transitions. Second operand has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:18,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:18,257 INFO L93 Difference]: Finished difference Result 83890 states and 221163 transitions. [2022-03-03 17:55:18,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 17:55:18,258 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 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 154 [2022-03-03 17:55:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:18,263 INFO L225 Difference]: With dead ends: 83890 [2022-03-03 17:55:18,263 INFO L226 Difference]: Without dead ends: 3259 [2022-03-03 17:55:18,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3311 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1596, Invalid=7146, Unknown=0, NotChecked=0, Total=8742 [2022-03-03 17:55:18,264 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1400 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:18,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1400 Valid, 2759 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 17:55:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2022-03-03 17:55:18,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2945. [2022-03-03 17:55:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 2.6426630434782608) internal successors, (7780), 2944 states have internal predecessors, (7780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 7780 transitions. [2022-03-03 17:55:18,380 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 7780 transitions. Word has length 154 [2022-03-03 17:55:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:18,381 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 7780 transitions. [2022-03-03 17:55:18,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 7780 transitions. [2022-03-03 17:55:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-03 17:55:18,384 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:18,384 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:18,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:18,595 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,SelfDestructingSolverStorable27 [2022-03-03 17:55:18,595 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:18,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:18,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1063269874, now seen corresponding path program 25 times [2022-03-03 17:55:18,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:18,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119490624] [2022-03-03 17:55:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:18,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 17:55:18,929 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:18,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119490624] [2022-03-03 17:55:18,929 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119490624] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:18,929 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200060854] [2022-03-03 17:55:18,929 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:55:18,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:18,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:18,930 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) [2022-03-03 17:55:18,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 17:55:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:19,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 64 conjunts are in the unsatisfiable core [2022-03-03 17:55:19,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:19,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-03 17:55:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 17:55:19,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:20,138 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:55:20,138 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-03 17:55:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 17:55:20,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200060854] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:20,605 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:20,605 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 17] total 56 [2022-03-03 17:55:20,605 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914608485] [2022-03-03 17:55:20,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:20,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-03 17:55:20,605 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:20,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-03 17:55:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2879, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 17:55:20,606 INFO L87 Difference]: Start difference. First operand 2945 states and 7780 transitions. Second operand has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:24,752 INFO L93 Difference]: Finished difference Result 18756 states and 49842 transitions. [2022-03-03 17:55:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-03-03 17:55:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 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 161 [2022-03-03 17:55:24,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:24,775 INFO L225 Difference]: With dead ends: 18756 [2022-03-03 17:55:24,776 INFO L226 Difference]: Without dead ends: 14102 [2022-03-03 17:55:24,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 275 SyntacticMatches, 14 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13196 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2153, Invalid=33379, Unknown=0, NotChecked=0, Total=35532 [2022-03-03 17:55:24,778 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 4495 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 3592 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4495 SdHoareTripleChecker+Valid, 8223 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:24,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4495 Valid, 8223 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3592 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 17:55:24,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2022-03-03 17:55:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 1284. [2022-03-03 17:55:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.4629773967264224) internal successors, (3160), 1283 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:24,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3160 transitions. [2022-03-03 17:55:24,845 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3160 transitions. Word has length 161 [2022-03-03 17:55:24,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:24,845 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 3160 transitions. [2022-03-03 17:55:24,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:24,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3160 transitions. [2022-03-03 17:55:24,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-03-03 17:55:24,846 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:24,846 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:24,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:25,053 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,SelfDestructingSolverStorable28 [2022-03-03 17:55:25,053 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:25,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:25,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1212014386, now seen corresponding path program 26 times [2022-03-03 17:55:25,054 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:25,054 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750868044] [2022-03-03 17:55:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:25,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 17:55:25,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:25,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750868044] [2022-03-03 17:55:25,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750868044] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:25,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899592839] [2022-03-03 17:55:25,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:55:25,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:25,519 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) [2022-03-03 17:55:25,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 17:55:25,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:55:25,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:25,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-03 17:55:25,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:26,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 17:55:26,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 17:55:26,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-03 17:55:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 17:55:26,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:26,844 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_929 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_929) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 20)) 5)) is different from false [2022-03-03 17:55:26,857 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:55:26,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-03 17:55:26,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 17:55:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 17:55:27,498 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899592839] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:27,498 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:27,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 61 [2022-03-03 17:55:27,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838907794] [2022-03-03 17:55:27,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:27,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-03-03 17:55:27,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-03-03 17:55:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3331, Unknown=1, NotChecked=116, Total=3660 [2022-03-03 17:55:27,499 INFO L87 Difference]: Start difference. First operand 1284 states and 3160 transitions. Second operand has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:55:29,522 INFO L93 Difference]: Finished difference Result 3781 states and 9852 transitions. [2022-03-03 17:55:29,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 17:55:29,523 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 0 states have call successors, (0), 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 161 [2022-03-03 17:55:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:55:29,528 INFO L225 Difference]: With dead ends: 3781 [2022-03-03 17:55:29,528 INFO L226 Difference]: Without dead ends: 3651 [2022-03-03 17:55:29,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 286 SyntacticMatches, 1 SemanticMatches, 99 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2593 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=702, Invalid=9201, Unknown=1, NotChecked=196, Total=10100 [2022-03-03 17:55:29,529 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1852 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 5512 SdHoareTripleChecker+Invalid, 2520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 313 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:55:29,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1852 Valid, 5512 Invalid, 2520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2084 Invalid, 0 Unknown, 313 Unchecked, 0.7s Time] [2022-03-03 17:55:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2022-03-03 17:55:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 1277. [2022-03-03 17:55:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.4655172413793105) internal successors, (3146), 1276 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3146 transitions. [2022-03-03 17:55:29,553 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3146 transitions. Word has length 161 [2022-03-03 17:55:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:55:29,553 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 3146 transitions. [2022-03-03 17:55:29,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.114754098360656) internal successors, (312), 61 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:55:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3146 transitions. [2022-03-03 17:55:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-03 17:55:29,555 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:55:29,555 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:55:29,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 17:55:29,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:29,755 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:55:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:55:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash -630277180, now seen corresponding path program 27 times [2022-03-03 17:55:29,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:55:29,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670852849] [2022-03-03 17:55:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:55:29,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:55:29,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:55:29,827 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 17:55:29,828 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:55:29,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670852849] [2022-03-03 17:55:29,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670852849] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:55:29,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911395640] [2022-03-03 17:55:29,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:55:29,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:55:29,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:55:29,829 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) [2022-03-03 17:55:29,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 17:55:29,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-03 17:55:29,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:55:29,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 89 conjunts are in the unsatisfiable core [2022-03-03 17:55:29,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:55:30,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:55:31,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:55:31,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:55:33,123 INFO L353 Elim1Store]: treesize reduction 121, result has 2.4 percent of original size [2022-03-03 17:55:33,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 16 [2022-03-03 17:55:33,200 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 80 proven. 134 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-03 17:55:33,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:55:40,234 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:55:40,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 94 [2022-03-03 17:55:40,260 INFO L353 Elim1Store]: treesize reduction 87, result has 31.5 percent of original size [2022-03-03 17:55:40,260 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 688 treesize of output 643 [2022-03-03 17:55:40,275 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-03-03 17:55:40,275 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 604 treesize of output 536 [2022-03-03 17:55:40,289 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-03-03 17:55:40,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 536 treesize of output 400 [2022-03-03 17:55:41,702 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 13 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-03 17:55:41,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911395640] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:55:41,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:55:41,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 41, 38] total 81 [2022-03-03 17:55:41,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19371959] [2022-03-03 17:55:41,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:55:41,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-03 17:55:41,703 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:55:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-03 17:55:41,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=5626, Unknown=81, NotChecked=0, Total=6480 [2022-03-03 17:55:41,704 INFO L87 Difference]: Start difference. First operand 1277 states and 3146 transitions. Second operand has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:57:04,579 WARN L228 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 81 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-03 18:00:34,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:34,436 INFO L93 Difference]: Finished difference Result 163720 states and 428778 transitions. [2022-03-03 18:00:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1148 states. [2022-03-03 18:00:34,437 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 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 164 [2022-03-03 18:00:34,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:34,947 INFO L225 Difference]: With dead ends: 163720 [2022-03-03 18:00:34,947 INFO L226 Difference]: Without dead ends: 127190 [2022-03-03 18:00:35,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1916 GetRequests, 700 SyntacticMatches, 0 SemanticMatches, 1216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690790 ImplicationChecksByTransitivity, 267.1s TimeCoverageRelationStatistics Valid=141169, Invalid=1341006, Unknown=131, NotChecked=0, Total=1482306 [2022-03-03 18:00:35,014 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 7774 mSDsluCounter, 30792 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 701 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7774 SdHoareTripleChecker+Valid, 31167 SdHoareTripleChecker+Invalid, 34955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 701 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31825 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:35,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7774 Valid, 31167 Invalid, 34955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [701 Valid, 2429 Invalid, 0 Unknown, 31825 Unchecked, 1.5s Time] [2022-03-03 18:00:35,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127190 states. [2022-03-03 18:00:36,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127190 to 39425. [2022-03-03 18:00:36,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39425 states, 39424 states have (on average 2.934735186688312) internal successors, (115699), 39424 states have internal predecessors, (115699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:36,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39425 states to 39425 states and 115699 transitions. [2022-03-03 18:00:36,913 INFO L78 Accepts]: Start accepts. Automaton has 39425 states and 115699 transitions. Word has length 164 [2022-03-03 18:00:36,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:36,913 INFO L470 AbstractCegarLoop]: Abstraction has 39425 states and 115699 transitions. [2022-03-03 18:00:36,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:36,913 INFO L276 IsEmpty]: Start isEmpty. Operand 39425 states and 115699 transitions. [2022-03-03 18:00:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-03-03 18:00:36,965 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:36,965 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:36,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:37,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:37,172 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:37,173 INFO L85 PathProgramCache]: Analyzing trace with hash 738185936, now seen corresponding path program 28 times [2022-03-03 18:00:37,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:37,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435231533] [2022-03-03 18:00:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:37,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 18:00:37,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:37,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435231533] [2022-03-03 18:00:37,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435231533] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:37,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856328645] [2022-03-03 18:00:37,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:00:37,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:37,253 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) [2022-03-03 18:00:37,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 18:00:37,375 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:00:37,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:37,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-03 18:00:37,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 18:00:37,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:37,831 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-03-03 18:00:37,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856328645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:37,831 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:37,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-03-03 18:00:37,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897267974] [2022-03-03 18:00:37,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:37,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:00:37,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:37,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:00:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:00:37,832 INFO L87 Difference]: Start difference. First operand 39425 states and 115699 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:38,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:38,434 INFO L93 Difference]: Finished difference Result 72902 states and 213778 transitions. [2022-03-03 18:00:38,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 18:00:38,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 0 states have call successors, (0), 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 164 [2022-03-03 18:00:38,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:38,923 INFO L225 Difference]: With dead ends: 72902 [2022-03-03 18:00:38,923 INFO L226 Difference]: Without dead ends: 72007 [2022-03-03 18:00:38,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:00:38,924 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 417 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:38,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 449 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:00:39,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72007 states. [2022-03-03 18:00:40,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72007 to 69536. [2022-03-03 18:00:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69536 states, 69535 states have (on average 2.9453512619544115) internal successors, (204805), 69535 states have internal predecessors, (204805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69536 states to 69536 states and 204805 transitions. [2022-03-03 18:00:40,798 INFO L78 Accepts]: Start accepts. Automaton has 69536 states and 204805 transitions. Word has length 164 [2022-03-03 18:00:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:40,798 INFO L470 AbstractCegarLoop]: Abstraction has 69536 states and 204805 transitions. [2022-03-03 18:00:40,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 69536 states and 204805 transitions. [2022-03-03 18:00:40,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-03-03 18:00:40,950 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:40,950 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:40,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:41,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:41,169 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1257603682, now seen corresponding path program 29 times [2022-03-03 18:00:41,169 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:41,169 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518220468] [2022-03-03 18:00:41,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:41,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 52 proven. 129 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-03 18:00:41,862 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:41,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518220468] [2022-03-03 18:00:41,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518220468] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:41,862 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420593884] [2022-03-03 18:00:41,862 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:00:41,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:41,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:41,864 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) [2022-03-03 18:00:41,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 18:00:42,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-03-03 18:00:42,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:42,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:00:42,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 70 proven. 111 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-03 18:00:43,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:44,015 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 52 proven. 129 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-03-03 18:00:44,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420593884] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:44,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:44,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 73 [2022-03-03 18:00:44,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381191647] [2022-03-03 18:00:44,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:44,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-03 18:00:44,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:44,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-03 18:00:44,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=973, Invalid=4283, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 18:00:44,017 INFO L87 Difference]: Start difference. First operand 69536 states and 204805 transitions. Second operand has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:45,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:45,993 INFO L93 Difference]: Finished difference Result 8269 states and 21677 transitions. [2022-03-03 18:00:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:00:45,994 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 0 states have call successors, (0), 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 167 [2022-03-03 18:00:45,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:46,002 INFO L225 Difference]: With dead ends: 8269 [2022-03-03 18:00:46,002 INFO L226 Difference]: Without dead ends: 4858 [2022-03-03 18:00:46,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5836 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3059, Invalid=12441, Unknown=0, NotChecked=0, Total=15500 [2022-03-03 18:00:46,003 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1243 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:46,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1243 Valid, 3242 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:00:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2022-03-03 18:00:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4508. [2022-03-03 18:00:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4508 states, 4507 states have (on average 2.7162192145551365) internal successors, (12242), 4507 states have internal predecessors, (12242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:46,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 12242 transitions. [2022-03-03 18:00:46,059 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 12242 transitions. Word has length 167 [2022-03-03 18:00:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:46,059 INFO L470 AbstractCegarLoop]: Abstraction has 4508 states and 12242 transitions. [2022-03-03 18:00:46,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.123287671232877) internal successors, (374), 73 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 12242 transitions. [2022-03-03 18:00:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-03 18:00:46,065 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:46,065 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:46,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 18:00:46,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:46,266 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:46,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:46,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1049547545, now seen corresponding path program 30 times [2022-03-03 18:00:46,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:46,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799154699] [2022-03-03 18:00:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:46,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:46,960 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:46,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:46,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799154699] [2022-03-03 18:00:46,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799154699] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:46,961 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470687793] [2022-03-03 18:00:46,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:00:46,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:46,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:46,962 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) [2022-03-03 18:00:46,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 18:00:47,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-03 18:00:47,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:00:47,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 57 conjunts are in the unsatisfiable core [2022-03-03 18:00:47,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:49,265 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-03-03 18:00:49,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-03-03 18:00:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 52 proven. 179 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-03 18:00:49,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:00:49,833 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-03-03 18:00:49,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-03-03 18:00:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 45 proven. 186 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-03-03 18:00:50,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470687793] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:00:50,971 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:00:50,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 31] total 89 [2022-03-03 18:00:50,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142658689] [2022-03-03 18:00:50,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:00:50,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-03-03 18:00:50,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:00:50,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-03-03 18:00:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=859, Invalid=6973, Unknown=0, NotChecked=0, Total=7832 [2022-03-03 18:00:50,973 INFO L87 Difference]: Start difference. First operand 4508 states and 12242 transitions. Second operand has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:57,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:00:57,449 INFO L93 Difference]: Finished difference Result 24952 states and 65903 transitions. [2022-03-03 18:00:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-03-03 18:00:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 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 174 [2022-03-03 18:00:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:00:57,493 INFO L225 Difference]: With dead ends: 24952 [2022-03-03 18:00:57,493 INFO L226 Difference]: Without dead ends: 24486 [2022-03-03 18:00:57,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13309 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=4623, Invalid=34777, Unknown=2, NotChecked=0, Total=39402 [2022-03-03 18:00:57,496 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 3045 mSDsluCounter, 12455 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 12173 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1529 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:00:57,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 12173 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2586 Invalid, 0 Unknown, 1529 Unchecked, 0.9s Time] [2022-03-03 18:00:57,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24486 states. [2022-03-03 18:00:57,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24486 to 11821. [2022-03-03 18:00:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11821 states, 11820 states have (on average 2.82165820642978) internal successors, (33352), 11820 states have internal predecessors, (33352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:57,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11821 states to 11821 states and 33352 transitions. [2022-03-03 18:00:57,819 INFO L78 Accepts]: Start accepts. Automaton has 11821 states and 33352 transitions. Word has length 174 [2022-03-03 18:00:57,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:00:57,819 INFO L470 AbstractCegarLoop]: Abstraction has 11821 states and 33352 transitions. [2022-03-03 18:00:57,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:00:57,819 INFO L276 IsEmpty]: Start isEmpty. Operand 11821 states and 33352 transitions. [2022-03-03 18:00:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-03 18:00:57,835 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:00:57,835 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:00:57,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-03 18:00:58,035 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,SelfDestructingSolverStorable33 [2022-03-03 18:00:58,036 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:00:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:00:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash 318915571, now seen corresponding path program 31 times [2022-03-03 18:00:58,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:00:58,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117989709] [2022-03-03 18:00:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:00:58,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:00:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:00:58,709 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:00:58,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117989709] [2022-03-03 18:00:58,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117989709] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:00:58,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554497508] [2022-03-03 18:00:58,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:00:58,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:00:58,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:00:58,710 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) [2022-03-03 18:00:58,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 18:00:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:00:58,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 72 conjunts are in the unsatisfiable core [2022-03-03 18:00:58,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:00:59,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-03 18:01:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-03 18:01:00,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:00,279 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 18:01:00,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-03-03 18:01:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-03 18:01:00,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554497508] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:00,987 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:00,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 19] total 77 [2022-03-03 18:01:00,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365486955] [2022-03-03 18:01:00,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:00,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-03 18:01:00,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:00,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-03 18:01:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=5539, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 18:01:00,988 INFO L87 Difference]: Start difference. First operand 11821 states and 33352 transitions. Second operand has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:10,734 INFO L93 Difference]: Finished difference Result 91721 states and 253486 transitions. [2022-03-03 18:01:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-03-03 18:01:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 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 174 [2022-03-03 18:01:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:10,930 INFO L225 Difference]: With dead ends: 91721 [2022-03-03 18:01:10,930 INFO L226 Difference]: Without dead ends: 80436 [2022-03-03 18:01:10,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 294 SyntacticMatches, 16 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43776 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=5910, Invalid=100040, Unknown=0, NotChecked=0, Total=105950 [2022-03-03 18:01:10,934 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 8967 mSDsluCounter, 15594 mSDsCounter, 0 mSdLazyCounter, 6827 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8967 SdHoareTripleChecker+Valid, 14536 SdHoareTripleChecker+Invalid, 7353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 6827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:10,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8967 Valid, 14536 Invalid, 7353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [526 Valid, 6827 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-03 18:01:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80436 states. [2022-03-03 18:01:11,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80436 to 5678. [2022-03-03 18:01:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5678 states, 5677 states have (on average 2.7003699136868065) internal successors, (15330), 5677 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5678 states to 5678 states and 15330 transitions. [2022-03-03 18:01:11,517 INFO L78 Accepts]: Start accepts. Automaton has 5678 states and 15330 transitions. Word has length 174 [2022-03-03 18:01:11,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:11,518 INFO L470 AbstractCegarLoop]: Abstraction has 5678 states and 15330 transitions. [2022-03-03 18:01:11,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5678 states and 15330 transitions. [2022-03-03 18:01:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-03-03 18:01:11,525 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:11,525 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:11,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 18:01:11,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:11,726 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:11,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -550410261, now seen corresponding path program 32 times [2022-03-03 18:01:11,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:11,727 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146401755] [2022-03-03 18:01:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:11,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:12,563 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:01:12,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:12,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146401755] [2022-03-03 18:01:12,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146401755] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:12,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120636363] [2022-03-03 18:01:12,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:01:12,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:12,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:12,565 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) [2022-03-03 18:01:12,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 18:01:12,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:01:12,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:12,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-03 18:01:12,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:13,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-03 18:01:13,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-03-03 18:01:14,079 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-03-03 18:01:14,105 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-03 18:01:14,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:14,382 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1210) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 24)))) is different from false [2022-03-03 18:01:14,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 18:01:14,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-03-03 18:01:14,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-03-03 18:01:15,215 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-03 18:01:15,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120636363] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:15,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:15,216 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 27, 26] total 80 [2022-03-03 18:01:15,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790842169] [2022-03-03 18:01:15,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:15,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-03-03 18:01:15,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:15,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-03-03 18:01:15,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=5860, Unknown=1, NotChecked=154, Total=6320 [2022-03-03 18:01:15,217 INFO L87 Difference]: Start difference. First operand 5678 states and 15330 transitions. Second operand has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:01:19,721 INFO L93 Difference]: Finished difference Result 16797 states and 45925 transitions. [2022-03-03 18:01:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-03-03 18:01:19,721 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 0 states have call successors, (0), 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 174 [2022-03-03 18:01:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:01:19,751 INFO L225 Difference]: With dead ends: 16797 [2022-03-03 18:01:19,751 INFO L226 Difference]: Without dead ends: 16667 [2022-03-03 18:01:19,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 149 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6270 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1448, Invalid=20905, Unknown=1, NotChecked=296, Total=22650 [2022-03-03 18:01:19,752 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 3069 mSDsluCounter, 8496 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3069 SdHoareTripleChecker+Valid, 8197 SdHoareTripleChecker+Invalid, 4868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:01:19,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3069 Valid, 8197 Invalid, 4868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 4215 Invalid, 0 Unknown, 410 Unchecked, 1.5s Time] [2022-03-03 18:01:19,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16667 states. [2022-03-03 18:01:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16667 to 5664. [2022-03-03 18:01:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5664 states, 5663 states have (on average 2.7021013597033376) internal successors, (15302), 5663 states have internal predecessors, (15302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5664 states to 5664 states and 15302 transitions. [2022-03-03 18:01:19,915 INFO L78 Accepts]: Start accepts. Automaton has 5664 states and 15302 transitions. Word has length 174 [2022-03-03 18:01:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:01:19,915 INFO L470 AbstractCegarLoop]: Abstraction has 5664 states and 15302 transitions. [2022-03-03 18:01:19,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 4.375) internal successors, (350), 80 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:01:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5664 states and 15302 transitions. [2022-03-03 18:01:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-03-03 18:01:19,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:01:19,923 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:01:19,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-03-03 18:01:20,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:20,132 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:01:20,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:01:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1518196055, now seen corresponding path program 33 times [2022-03-03 18:01:20,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:01:20,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107061984] [2022-03-03 18:01:20,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:01:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:01:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:01:20,246 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-03-03 18:01:20,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:01:20,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107061984] [2022-03-03 18:01:20,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107061984] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:01:20,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621080163] [2022-03-03 18:01:20,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:01:20,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:01:20,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:01:20,248 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) [2022-03-03 18:01:20,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 18:01:20,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-03 18:01:20,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:01:20,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 88 conjunts are in the unsatisfiable core [2022-03-03 18:01:20,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:01:24,682 INFO L353 Elim1Store]: treesize reduction 206, result has 1.4 percent of original size [2022-03-03 18:01:24,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 19 [2022-03-03 18:01:24,754 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 117 proven. 169 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-03 18:01:24,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:01:25,489 INFO L353 Elim1Store]: treesize reduction 160, result has 24.9 percent of original size [2022-03-03 18:01:25,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 72 [2022-03-03 18:01:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 24 proven. 262 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-03-03 18:01:27,468 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621080163] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:01:27,468 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:01:27,469 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 35, 35] total 73 [2022-03-03 18:01:27,469 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020852544] [2022-03-03 18:01:27,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:01:27,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-03-03 18:01:27,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:01:27,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-03-03 18:01:27,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=4568, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 18:01:27,470 INFO L87 Difference]: Start difference. First operand 5664 states and 15302 transitions. Second operand has 73 states, 73 states have (on average 5.904109589041096) internal successors, (431), 73 states have internal predecessors, (431), 0 states have call successors, (0), 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... [2022-03-03 18:02:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 756 states. [2022-03-03 18:02:31,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1489 GetRequests, 666 SyntacticMatches, 3 SemanticMatches, 820 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296353 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=74970, Invalid=599891, Unknown=1, NotChecked=0, Total=674862 [2022-03-03 18:02:31,143 INFO L933 BasicCegarLoop]: 1217 mSDtfsCounter, 8220 mSDsluCounter, 39757 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8220 SdHoareTripleChecker+Valid, 33080 SdHoareTripleChecker+Invalid, 41479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37771 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:02:31,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8220 Valid, 33080 Invalid, 41479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [885 Valid, 2823 Invalid, 0 Unknown, 37771 Unchecked, 1.6s Time] [2022-03-03 18:02:31,145 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-03 18:02:31,147 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 [2022-03-03 18:02:31,147 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 18:02:31,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 18:02:31,345 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,SelfDestructingSolverStorable36 [2022-03-03 18:02:31,346 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (5664states) and FLOYD_HOARE automaton (currently 756 states, 73 states before enhancement),while ReachableStatesComputation was computing reachable states (274548 states constructed, input type IntersectNwa). [2022-03-03 18:02:31,348 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 18:02:31,348 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 18:02:31,350 INFO L732 BasicCegarLoop]: Path program histogram: [33, 1, 1, 1, 1] [2022-03-03 18:02:31,351 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 18:02:31,351 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 18:02:31,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 06:02:31 BasicIcfg [2022-03-03 18:02:31,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 18:02:31,353 INFO L158 Benchmark]: Toolchain (without parser) took 805750.87ms. Allocated memory was 184.5MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 135.8MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 968.6MB. Max. memory is 8.0GB. [2022-03-03 18:02:31,353 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory was 152.2MB in the beginning and 152.1MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 18:02:31,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.10ms. Allocated memory is still 184.5MB. Free memory was 135.6MB in the beginning and 161.1MB in the end (delta: -25.5MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. [2022-03-03 18:02:31,353 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.95ms. Allocated memory is still 184.5MB. Free memory was 161.1MB in the beginning and 159.5MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-03 18:02:31,353 INFO L158 Benchmark]: Boogie Preprocessor took 29.82ms. Allocated memory is still 184.5MB. Free memory was 159.5MB in the beginning and 158.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:02:31,353 INFO L158 Benchmark]: RCFGBuilder took 416.33ms. Allocated memory is still 184.5MB. Free memory was 158.0MB in the beginning and 138.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-03-03 18:02:31,353 INFO L158 Benchmark]: TraceAbstraction took 804993.22ms. Allocated memory was 184.5MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 138.0MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 970.3MB. Max. memory is 8.0GB. [2022-03-03 18:02:31,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory was 152.2MB in the beginning and 152.1MB in the end (delta: 69.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 256.10ms. Allocated memory is still 184.5MB. Free memory was 135.6MB in the beginning and 161.1MB in the end (delta: -25.5MB). Peak memory consumption was 14.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.95ms. Allocated memory is still 184.5MB. Free memory was 161.1MB in the beginning and 159.5MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.82ms. Allocated memory is still 184.5MB. Free memory was 159.5MB in the beginning and 158.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 416.33ms. Allocated memory is still 184.5MB. Free memory was 158.0MB in the beginning and 138.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 804993.22ms. Allocated memory was 184.5MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 138.0MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 970.3MB. Max. memory is 8.0GB. * 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: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (5664states) and FLOYD_HOARE automaton (currently 756 states, 73 states before enhancement),while ReachableStatesComputation was computing reachable states (274548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 79]: 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 (5664states) and FLOYD_HOARE automaton (currently 756 states, 73 states before enhancement),while ReachableStatesComputation was computing reachable states (274548 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 80]: 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 (5664states) and FLOYD_HOARE automaton (currently 756 states, 73 states before enhancement),while ReachableStatesComputation was computing reachable states (274548 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 804.9s, OverallIterations: 37, TraceHistogramMax: 8, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.9s, AutomataDifference: 700.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77248 SdHoareTripleChecker+Valid, 19.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77248 mSDsluCounter, 197498 SdHoareTripleChecker+Invalid, 16.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 98505 IncrementalHoareTripleChecker+Unchecked, 211186 mSDsCounter, 5457 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48781 IncrementalHoareTripleChecker+Invalid, 152743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5457 mSolverCounterUnsat, 8116 mSDtfsCounter, 48781 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15418 GetRequests, 9422 SyntacticMatches, 450 SemanticMatches, 5546 ConstructedPredicates, 7 IntricatePredicates, 7 DeprecatedPredicates, 1540848 ImplicationChecksByTransitivity, 646.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78644occurred in iteration=27, InterpolantAutomatonStates: 3568, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 11.4s AutomataMinimizationTime, 36 MinimizatonAttempts, 386500 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 78.2s InterpolantComputationTime, 9433 NumberOfCodeBlocks, 9324 NumberOfCodeBlocksAsserted, 149 NumberOfCheckSat, 13877 ConstructedInterpolants, 428 QuantifiedInterpolants, 129044 SizeOfPredicates, 618 NumberOfNonLiveVariables, 11498 ConjunctsInSsa, 1298 ConjunctsInUnsatCore, 103 InterpolantComputations, 4 PerfectInterpolantSequences, 5155/12327 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