/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 02:47:54,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 02:47:54,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 02:47:54,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 02:47:54,922 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 02:47:54,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 02:47:54,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 02:47:54,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 02:47:54,936 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 02:47:54,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 02:47:54,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 02:47:54,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 02:47:54,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 02:47:54,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 02:47:54,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 02:47:54,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 02:47:54,937 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 02:47:54,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 02:47:54,937 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 02:47:54,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 02:47:54,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:47:54,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 02:47:54,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 02:47:54,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 02:47:55,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 02:47:55,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 02:47:55,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 02:47:55,124 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 02:47:55,126 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 02:47:55,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-18 02:47:55,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ba8e98c/01f5fa995b614356849f56bbfaffca24/FLAG9666d2938 [2022-01-18 02:47:55,537 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 02:47:55,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-18 02:47:55,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ba8e98c/01f5fa995b614356849f56bbfaffca24/FLAG9666d2938 [2022-01-18 02:47:55,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ba8e98c/01f5fa995b614356849f56bbfaffca24 [2022-01-18 02:47:55,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 02:47:55,563 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 02:47:55,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 02:47:55,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 02:47:55,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 02:47:55,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e437bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55, skipping insertion in model container [2022-01-18 02:47:55,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 02:47:55,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 02:47:55,753 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-01-18 02:47:55,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:47:55,763 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 02:47:55,777 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-01-18 02:47:55,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 02:47:55,787 INFO L208 MainTranslator]: Completed translation [2022-01-18 02:47:55,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55 WrapperNode [2022-01-18 02:47:55,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 02:47:55,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 02:47:55,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 02:47:55,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 02:47:55,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,819 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-01-18 02:47:55,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 02:47:55,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 02:47:55,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 02:47:55,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 02:47:55,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 02:47:55,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 02:47:55,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 02:47:55,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 02:47:55,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (1/1) ... [2022-01-18 02:47:55,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 02:47:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:55,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 02:47:55,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 02:47:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 02:47:55,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 02:47:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 02:47:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 02:47:55,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 02:47:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 02:47:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 02:47:55,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 02:47:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 02:47:55,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 02:47:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 02:47:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 02:47:55,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 02:47:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 02:47:55,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 02:47:55,911 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 02:47:55,985 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 02:47:55,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 02:47:56,131 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 02:47:56,192 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 02:47:56,193 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 02:47:56,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:47:56 BoogieIcfgContainer [2022-01-18 02:47:56,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 02:47:56,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 02:47:56,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 02:47:56,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 02:47:56,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 02:47:55" (1/3) ... [2022-01-18 02:47:56,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3970596e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:47:56, skipping insertion in model container [2022-01-18 02:47:56,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 02:47:55" (2/3) ... [2022-01-18 02:47:56,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3970596e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 02:47:56, skipping insertion in model container [2022-01-18 02:47:56,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 02:47:56" (3/3) ... [2022-01-18 02:47:56,199 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-01-18 02:47:56,202 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 02:47:56,202 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 02:47:56,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 02:47:56,202 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 02:47:56,240 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,240 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,241 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,242 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,243 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,244 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,245 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,246 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,247 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,248 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,249 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,250 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,251 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,252 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,254 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,255 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,256 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 02:47:56,259 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 02:47:56,290 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 02:47:56,294 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 02:47:56,294 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 02:47:56,303 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 133 transitions, 282 flow [2022-01-18 02:47:56,352 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-18 02:47:56,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:56,368 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] [2022-01-18 02:47:56,368 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:56,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash -386855673, now seen corresponding path program 1 times [2022-01-18 02:47:56,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:56,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684479668] [2022-01-18 02:47:56,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:56,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:56,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:56,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:56,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684479668] [2022-01-18 02:47:56,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684479668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:47:56,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:47:56,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 02:47:56,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608486304] [2022-01-18 02:47:56,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:47:56,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 02:47:56,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:56,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 02:47:56,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:47:56,532 INFO L87 Difference]: Start difference. First operand has 676 states, 675 states have (on average 2.7111111111111112) internal successors, (1830), 675 states have internal predecessors, (1830), 0 states have call successors, (0), 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 43.0) internal successors, (86), 2 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) [2022-01-18 02:47:56,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:56,574 INFO L93 Difference]: Finished difference Result 676 states and 1686 transitions. [2022-01-18 02:47:56,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 02:47:56,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 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 [2022-01-18 02:47:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:56,587 INFO L225 Difference]: With dead ends: 676 [2022-01-18 02:47:56,588 INFO L226 Difference]: Without dead ends: 642 [2022-01-18 02:47:56,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 02:47:56,597 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:56,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:47:56,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-01-18 02:47:56,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2022-01-18 02:47:56,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.49609984399376) internal successors, (1600), 641 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1600 transitions. [2022-01-18 02:47:56,674 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1600 transitions. Word has length 86 [2022-01-18 02:47:56,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:56,674 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1600 transitions. [2022-01-18 02:47:56,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.0) internal successors, (86), 2 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) [2022-01-18 02:47:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1600 transitions. [2022-01-18 02:47:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-18 02:47:56,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:56,677 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] [2022-01-18 02:47:56,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 02:47:56,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:56,679 INFO L85 PathProgramCache]: Analyzing trace with hash -897208069, now seen corresponding path program 1 times [2022-01-18 02:47:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:56,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349490081] [2022-01-18 02:47:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:56,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:56,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:56,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349490081] [2022-01-18 02:47:56,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349490081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:47:56,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:47:56,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 02:47:56,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173921742] [2022-01-18 02:47:56,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:47:56,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 02:47:56,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 02:47:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 02:47:56,873 INFO L87 Difference]: Start difference. First operand 642 states and 1600 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:56,947 INFO L93 Difference]: Finished difference Result 1217 states and 3132 transitions. [2022-01-18 02:47:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 02:47:56,947 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-18 02:47:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:56,954 INFO L225 Difference]: With dead ends: 1217 [2022-01-18 02:47:56,954 INFO L226 Difference]: Without dead ends: 864 [2022-01-18 02:47:56,957 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 [2022-01-18 02:47:56,958 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 26 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:56,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 344 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:47:56,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-01-18 02:47:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 716. [2022-01-18 02:47:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 2.521678321678322) internal successors, (1803), 715 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1803 transitions. [2022-01-18 02:47:57,000 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1803 transitions. Word has length 88 [2022-01-18 02:47:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:57,002 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1803 transitions. [2022-01-18 02:47:57,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,003 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1803 transitions. [2022-01-18 02:47:57,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-18 02:47:57,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:57,006 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] [2022-01-18 02:47:57,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 02:47:57,007 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:57,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash -672454208, now seen corresponding path program 1 times [2022-01-18 02:47:57,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:57,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626740098] [2022-01-18 02:47:57,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:57,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:57,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:57,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626740098] [2022-01-18 02:47:57,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626740098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:47:57,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:47:57,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 02:47:57,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59363657] [2022-01-18 02:47:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:47:57,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 02:47:57,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:57,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 02:47:57,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 02:47:57,099 INFO L87 Difference]: Start difference. First operand 716 states and 1803 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:57,121 INFO L93 Difference]: Finished difference Result 843 states and 2119 transitions. [2022-01-18 02:47:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 02:47:57,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-01-18 02:47:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:57,125 INFO L225 Difference]: With dead ends: 843 [2022-01-18 02:47:57,125 INFO L226 Difference]: Without dead ends: 795 [2022-01-18 02:47:57,125 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 [2022-01-18 02:47:57,130 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 17 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:57,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 159 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:47:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-01-18 02:47:57,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2022-01-18 02:47:57,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.522670025188917) internal successors, (2003), 794 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2003 transitions. [2022-01-18 02:47:57,157 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2003 transitions. Word has length 91 [2022-01-18 02:47:57,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:57,158 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 2003 transitions. [2022-01-18 02:47:57,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2003 transitions. [2022-01-18 02:47:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-18 02:47:57,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:57,161 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, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:57,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 02:47:57,161 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:57,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 855435936, now seen corresponding path program 1 times [2022-01-18 02:47:57,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:57,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687275331] [2022-01-18 02:47:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:57,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:47:57,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:57,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687275331] [2022-01-18 02:47:57,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687275331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:47:57,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:47:57,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 02:47:57,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235867461] [2022-01-18 02:47:57,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:47:57,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 02:47:57,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:47:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 02:47:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-18 02:47:57,345 INFO L87 Difference]: Start difference. First operand 795 states and 2003 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:47:57,461 INFO L93 Difference]: Finished difference Result 924 states and 2269 transitions. [2022-01-18 02:47:57,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 02:47:57,461 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 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 [2022-01-18 02:47:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:47:57,464 INFO L225 Difference]: With dead ends: 924 [2022-01-18 02:47:57,465 INFO L226 Difference]: Without dead ends: 801 [2022-01-18 02:47:57,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-18 02:47:57,470 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 269 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:47:57,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 484 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:47:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-01-18 02:47:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 796. [2022-01-18 02:47:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.520754716981132) internal successors, (2004), 795 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2004 transitions. [2022-01-18 02:47:57,485 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2004 transitions. Word has length 102 [2022-01-18 02:47:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:47:57,485 INFO L470 AbstractCegarLoop]: Abstraction has 796 states and 2004 transitions. [2022-01-18 02:47:57,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:47:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2004 transitions. [2022-01-18 02:47:57,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 02:47:57,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:47:57,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:47:57,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 02:47:57,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:47:57,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:47:57,490 INFO L85 PathProgramCache]: Analyzing trace with hash -881340959, now seen corresponding path program 1 times [2022-01-18 02:47:57,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:47:57,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797283498] [2022-01-18 02:47:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:57,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:47:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:47:57,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:47:57,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797283498] [2022-01-18 02:47:57,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797283498] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:47:57,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201791649] [2022-01-18 02:47:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:47:57,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:47:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:47:57,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:47:57,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 02:47:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:47:57,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 02:47:57,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:47:58,486 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 [2022-01-18 02:47:58,779 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 [2022-01-18 02:47:58,850 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 [2022-01-18 02:47:59,063 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 [2022-01-18 02:47:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:47:59,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:00,163 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:00,163 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 96 treesize of output 72 [2022-01-18 02:48:00,172 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:00,172 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 494 treesize of output 462 [2022-01-18 02:48:00,182 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:00,183 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 446 treesize of output 426 [2022-01-18 02:48:00,193 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:00,193 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 410 treesize of output 354 [2022-01-18 02:48:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:01,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201791649] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:01,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:01,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 23] total 49 [2022-01-18 02:48:01,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493696602] [2022-01-18 02:48:01,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:01,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 02:48:01,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:01,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 02:48:01,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=1743, Unknown=50, NotChecked=0, Total=2352 [2022-01-18 02:48:01,181 INFO L87 Difference]: Start difference. First operand 796 states and 2004 transitions. Second operand has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:01,895 INFO L93 Difference]: Finished difference Result 1865 states and 4861 transitions. [2022-01-18 02:48:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 02:48:01,896 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 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 [2022-01-18 02:48:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:01,903 INFO L225 Difference]: With dead ends: 1865 [2022-01-18 02:48:01,903 INFO L226 Difference]: Without dead ends: 1831 [2022-01-18 02:48:01,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 174 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1034, Invalid=3076, Unknown=50, NotChecked=0, Total=4160 [2022-01-18 02:48:01,904 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 772 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:01,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [772 Valid, 1916 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 492 Invalid, 0 Unknown, 101 Unchecked, 0.2s Time] [2022-01-18 02:48:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2022-01-18 02:48:01,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1004. [2022-01-18 02:48:01,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1003 states have (on average 2.5692921236291126) internal successors, (2577), 1003 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:01,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 2577 transitions. [2022-01-18 02:48:01,926 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 2577 transitions. Word has length 109 [2022-01-18 02:48:01,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:01,926 INFO L470 AbstractCegarLoop]: Abstraction has 1004 states and 2577 transitions. [2022-01-18 02:48:01,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.673469387755102) internal successors, (278), 49 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:01,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 2577 transitions. [2022-01-18 02:48:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 02:48:01,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:01,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:01,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:02,139 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 [2022-01-18 02:48:02,140 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:02,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1367436801, now seen corresponding path program 1 times [2022-01-18 02:48:02,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:02,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407166654] [2022-01-18 02:48:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:02,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:48:02,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:02,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407166654] [2022-01-18 02:48:02,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407166654] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:48:02,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:48:02,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 02:48:02,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644759895] [2022-01-18 02:48:02,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:48:02,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 02:48:02,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:02,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 02:48:02,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 02:48:02,185 INFO L87 Difference]: Start difference. First operand 1004 states and 2577 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:02,202 INFO L93 Difference]: Finished difference Result 983 states and 2495 transitions. [2022-01-18 02:48:02,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 02:48:02,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 [2022-01-18 02:48:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:02,205 INFO L225 Difference]: With dead ends: 983 [2022-01-18 02:48:02,205 INFO L226 Difference]: Without dead ends: 983 [2022-01-18 02:48:02,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 02:48:02,206 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 15 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:02,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 207 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:48:02,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2022-01-18 02:48:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 932. [2022-01-18 02:48:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 931 states have (on average 2.5381310418904404) internal successors, (2363), 931 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:02,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 2363 transitions. [2022-01-18 02:48:02,223 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 2363 transitions. Word has length 109 [2022-01-18 02:48:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:02,223 INFO L470 AbstractCegarLoop]: Abstraction has 932 states and 2363 transitions. [2022-01-18 02:48:02,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 2363 transitions. [2022-01-18 02:48:02,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 02:48:02,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:02,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:02,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 02:48:02,225 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:02,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash -82845087, now seen corresponding path program 2 times [2022-01-18 02:48:02,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:02,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607235244] [2022-01-18 02:48:02,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:02,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:48:02,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:02,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607235244] [2022-01-18 02:48:02,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607235244] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:02,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346760386] [2022-01-18 02:48:02,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:48:02,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:02,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:02,362 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:02,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 02:48:02,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:48:02,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:02,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 02:48:02,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:02,465 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 [2022-01-18 02:48:02,866 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:48:02,866 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 [2022-01-18 02:48:03,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-01-18 02:48:03,321 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 [2022-01-18 02:48:03,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-01-18 02:48:03,561 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 [2022-01-18 02:48:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:03,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:04,571 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:04,571 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 96 treesize of output 72 [2022-01-18 02:48:04,585 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:04,585 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 232 treesize of output 224 [2022-01-18 02:48:04,593 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:04,593 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 208 treesize of output 188 [2022-01-18 02:48:04,605 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:04,605 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 172 treesize of output 170 [2022-01-18 02:48:05,807 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 [2022-01-18 02:48:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:05,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346760386] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:05,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:05,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 25] total 51 [2022-01-18 02:48:05,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473033979] [2022-01-18 02:48:05,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:05,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 02:48:05,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:05,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 02:48:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=1885, Unknown=55, NotChecked=0, Total=2550 [2022-01-18 02:48:05,873 INFO L87 Difference]: Start difference. First operand 932 states and 2363 transitions. Second operand has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:07,282 INFO L93 Difference]: Finished difference Result 3828 states and 10142 transitions. [2022-01-18 02:48:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 02:48:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 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 [2022-01-18 02:48:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:07,292 INFO L225 Difference]: With dead ends: 3828 [2022-01-18 02:48:07,292 INFO L226 Difference]: Without dead ends: 2560 [2022-01-18 02:48:07,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 177 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2228 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1544, Invalid=5541, Unknown=55, NotChecked=0, Total=7140 [2022-01-18 02:48:07,294 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1195 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:07,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 2222 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 665 Invalid, 0 Unknown, 608 Unchecked, 0.3s Time] [2022-01-18 02:48:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2022-01-18 02:48:07,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 1334. [2022-01-18 02:48:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1333 states have (on average 2.557389347336834) internal successors, (3409), 1333 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:07,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 3409 transitions. [2022-01-18 02:48:07,325 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 3409 transitions. Word has length 109 [2022-01-18 02:48:07,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:07,326 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 3409 transitions. [2022-01-18 02:48:07,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.431372549019608) internal successors, (277), 51 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:07,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 3409 transitions. [2022-01-18 02:48:07,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 02:48:07,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:07,328 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:07,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:07,549 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,SelfDestructingSolverStorable6 [2022-01-18 02:48:07,549 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:07,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:07,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2079156415, now seen corresponding path program 3 times [2022-01-18 02:48:07,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:07,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925488395] [2022-01-18 02:48:07,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:07,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 02:48:07,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:07,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925488395] [2022-01-18 02:48:07,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925488395] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700447910] [2022-01-18 02:48:07,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:48:07,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:07,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:07,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:07,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 02:48:07,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 02:48:07,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:07,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 17 conjunts are in the unsatisfiable core [2022-01-18 02:48:07,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 02:48:07,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 02:48:08,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700447910] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:08,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:08,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 17 [2022-01-18 02:48:08,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520579731] [2022-01-18 02:48:08,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:08,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 02:48:08,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:08,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 02:48:08,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-01-18 02:48:08,119 INFO L87 Difference]: Start difference. First operand 1334 states and 3409 transitions. Second operand has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:08,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:08,372 INFO L93 Difference]: Finished difference Result 3437 states and 8954 transitions. [2022-01-18 02:48:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 02:48:08,373 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 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 [2022-01-18 02:48:08,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:08,380 INFO L225 Difference]: With dead ends: 3437 [2022-01-18 02:48:08,380 INFO L226 Difference]: Without dead ends: 2222 [2022-01-18 02:48:08,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 02:48:08,381 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 1043 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:08,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 888 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 02:48:08,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2022-01-18 02:48:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 1591. [2022-01-18 02:48:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1590 states have (on average 2.69811320754717) internal successors, (4290), 1590 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4290 transitions. [2022-01-18 02:48:08,413 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4290 transitions. Word has length 115 [2022-01-18 02:48:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:08,413 INFO L470 AbstractCegarLoop]: Abstraction has 1591 states and 4290 transitions. [2022-01-18 02:48:08,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.823529411764707) internal successors, (218), 17 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4290 transitions. [2022-01-18 02:48:08,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:48:08,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:08,416 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-01-18 02:48:08,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:08,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:08,632 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1436284997, now seen corresponding path program 4 times [2022-01-18 02:48:08,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:08,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716488534] [2022-01-18 02:48:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:08,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-18 02:48:08,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:08,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716488534] [2022-01-18 02:48:08,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716488534] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 02:48:08,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 02:48:08,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 02:48:08,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138267583] [2022-01-18 02:48:08,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 02:48:08,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 02:48:08,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:08,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 02:48:08,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 02:48:08,701 INFO L87 Difference]: Start difference. First operand 1591 states and 4290 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:08,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:08,724 INFO L93 Difference]: Finished difference Result 2542 states and 6823 transitions. [2022-01-18 02:48:08,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 02:48:08,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 130 [2022-01-18 02:48:08,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:08,733 INFO L225 Difference]: With dead ends: 2542 [2022-01-18 02:48:08,733 INFO L226 Difference]: Without dead ends: 2542 [2022-01-18 02:48:08,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 02:48:08,735 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 62 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:08,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 347 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:48:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-01-18 02:48:08,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2281. [2022-01-18 02:48:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2281 states, 2280 states have (on average 2.7092105263157893) internal successors, (6177), 2280 states have internal predecessors, (6177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:08,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2281 states to 2281 states and 6177 transitions. [2022-01-18 02:48:08,772 INFO L78 Accepts]: Start accepts. Automaton has 2281 states and 6177 transitions. Word has length 130 [2022-01-18 02:48:08,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:08,773 INFO L470 AbstractCegarLoop]: Abstraction has 2281 states and 6177 transitions. [2022-01-18 02:48:08,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2281 states and 6177 transitions. [2022-01-18 02:48:08,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:48:08,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:08,777 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:08,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 02:48:08,777 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:08,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash -997919845, now seen corresponding path program 1 times [2022-01-18 02:48:08,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:08,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096941170] [2022-01-18 02:48:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:08,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:48:08,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:08,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096941170] [2022-01-18 02:48:08,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096941170] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:08,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020201333] [2022-01-18 02:48:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:08,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:08,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:08,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:08,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 02:48:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:08,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 61 conjunts are in the unsatisfiable core [2022-01-18 02:48:09,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:09,911 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:48:09,911 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 48 treesize of output 14 [2022-01-18 02:48:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:09,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:10,338 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-18 02:48:10,338 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 77 treesize of output 78 [2022-01-18 02:48:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:11,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020201333] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:11,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:11,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21, 20] total 41 [2022-01-18 02:48:11,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769631510] [2022-01-18 02:48:11,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:11,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-18 02:48:11,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:11,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-18 02:48:11,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1266, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 02:48:11,475 INFO L87 Difference]: Start difference. First operand 2281 states and 6177 transitions. Second operand has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 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) [2022-01-18 02:48:13,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:13,322 INFO L93 Difference]: Finished difference Result 13672 states and 36888 transitions. [2022-01-18 02:48:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 02:48:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 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 130 [2022-01-18 02:48:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:13,348 INFO L225 Difference]: With dead ends: 13672 [2022-01-18 02:48:13,349 INFO L226 Difference]: Without dead ends: 8898 [2022-01-18 02:48:13,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2509 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1418, Invalid=6238, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 02:48:13,351 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 1915 mSDsluCounter, 3357 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:13,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 3373 Invalid, 1304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 02:48:13,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2022-01-18 02:48:13,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 4847. [2022-01-18 02:48:13,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4847 states, 4846 states have (on average 2.73937267849773) internal successors, (13275), 4846 states have internal predecessors, (13275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 13275 transitions. [2022-01-18 02:48:13,478 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 13275 transitions. Word has length 130 [2022-01-18 02:48:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:13,478 INFO L470 AbstractCegarLoop]: Abstraction has 4847 states and 13275 transitions. [2022-01-18 02:48:13,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 7.878048780487805) internal successors, (323), 41 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) [2022-01-18 02:48:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 13275 transitions. [2022-01-18 02:48:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-18 02:48:13,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:13,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:13,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:13,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:13,704 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash -116894547, now seen corresponding path program 2 times [2022-01-18 02:48:13,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:13,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549557102] [2022-01-18 02:48:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:13,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 02:48:13,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:13,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549557102] [2022-01-18 02:48:13,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549557102] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:13,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693553962] [2022-01-18 02:48:13,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:48:13,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:13,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:13,854 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:13,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 02:48:13,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:48:13,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:13,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-18 02:48:13,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:13,969 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 [2022-01-18 02:48:14,326 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 02:48:14,326 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 [2022-01-18 02:48:14,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-01-18 02:48:14,857 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 [2022-01-18 02:48:14,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-01-18 02:48:15,338 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-18 02:48:15,339 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 48 treesize of output 14 [2022-01-18 02:48:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:15,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:16,924 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:16,924 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 185 treesize of output 125 [2022-01-18 02:48:16,951 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-18 02:48:16,951 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 808 treesize of output 744 [2022-01-18 02:48:16,978 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-18 02:48:16,978 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 706 treesize of output 588 [2022-01-18 02:48:17,014 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-18 02:48:17,014 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 550 treesize of output 510 [2022-01-18 02:48:19,215 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 [2022-01-18 02:48:19,248 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:19,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693553962] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:19,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:19,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 30, 28] total 59 [2022-01-18 02:48:19,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044710732] [2022-01-18 02:48:19,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:19,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-01-18 02:48:19,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:19,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-01-18 02:48:19,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=769, Invalid=2583, Unknown=70, NotChecked=0, Total=3422 [2022-01-18 02:48:19,250 INFO L87 Difference]: Start difference. First operand 4847 states and 13275 transitions. Second operand has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:21,946 INFO L93 Difference]: Finished difference Result 13094 states and 35710 transitions. [2022-01-18 02:48:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 02:48:21,947 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 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 130 [2022-01-18 02:48:21,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:21,974 INFO L225 Difference]: With dead ends: 13094 [2022-01-18 02:48:21,974 INFO L226 Difference]: Without dead ends: 12507 [2022-01-18 02:48:21,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 214 SyntacticMatches, 5 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1986, Invalid=7843, Unknown=71, NotChecked=0, Total=9900 [2022-01-18 02:48:21,976 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1970 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 530 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:21,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1970 Valid, 3740 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1006 Invalid, 0 Unknown, 530 Unchecked, 0.5s Time] [2022-01-18 02:48:21,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12507 states. [2022-01-18 02:48:22,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12507 to 6938. [2022-01-18 02:48:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6938 states, 6937 states have (on average 2.7735332276200086) internal successors, (19240), 6937 states have internal predecessors, (19240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6938 states to 6938 states and 19240 transitions. [2022-01-18 02:48:22,140 INFO L78 Accepts]: Start accepts. Automaton has 6938 states and 19240 transitions. Word has length 130 [2022-01-18 02:48:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:22,141 INFO L470 AbstractCegarLoop]: Abstraction has 6938 states and 19240 transitions. [2022-01-18 02:48:22,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.661016949152542) internal successors, (334), 59 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 6938 states and 19240 transitions. [2022-01-18 02:48:22,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-18 02:48:22,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:22,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:22,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:22,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 02:48:22,367 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:22,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:22,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2097043391, now seen corresponding path program 3 times [2022-01-18 02:48:22,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:22,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598324901] [2022-01-18 02:48:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:22,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:22,425 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:48:22,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598324901] [2022-01-18 02:48:22,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598324901] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:22,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884745704] [2022-01-18 02:48:22,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:48:22,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:22,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:22,426 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:22,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 02:48:22,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:48:22,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:22,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 02:48:22,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:48:22,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:48:23,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884745704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:23,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:23,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2022-01-18 02:48:23,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10147902] [2022-01-18 02:48:23,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:23,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 02:48:23,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:23,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 02:48:23,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-01-18 02:48:23,072 INFO L87 Difference]: Start difference. First operand 6938 states and 19240 transitions. Second operand has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:23,152 INFO L93 Difference]: Finished difference Result 12771 states and 35165 transitions. [2022-01-18 02:48:23,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 02:48:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 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 140 [2022-01-18 02:48:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:23,178 INFO L225 Difference]: With dead ends: 12771 [2022-01-18 02:48:23,178 INFO L226 Difference]: Without dead ends: 12531 [2022-01-18 02:48:23,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 02:48:23,179 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 534 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:23,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 339 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:48:23,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12531 states. [2022-01-18 02:48:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12531 to 9846. [2022-01-18 02:48:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9846 states, 9845 states have (on average 2.7954291518537326) internal successors, (27521), 9845 states have internal predecessors, (27521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:23,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 27521 transitions. [2022-01-18 02:48:23,342 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 27521 transitions. Word has length 140 [2022-01-18 02:48:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:23,342 INFO L470 AbstractCegarLoop]: Abstraction has 9846 states and 27521 transitions. [2022-01-18 02:48:23,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:23,342 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 27521 transitions. [2022-01-18 02:48:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 02:48:23,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:23,356 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 02:48:23,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:23,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:23,571 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1592177699, now seen corresponding path program 4 times [2022-01-18 02:48:23,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:23,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570825443] [2022-01-18 02:48:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:23,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:23,785 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:48:23,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:23,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570825443] [2022-01-18 02:48:23,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570825443] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:23,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080079284] [2022-01-18 02:48:23,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:48:23,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:23,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:23,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:23,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 02:48:23,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:48:23,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:23,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 02:48:23,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:24,372 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:48:24,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 02:48:25,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080079284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:25,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:25,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 15] total 42 [2022-01-18 02:48:25,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974746377] [2022-01-18 02:48:25,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:25,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-01-18 02:48:25,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:25,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-01-18 02:48:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1438, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 02:48:25,059 INFO L87 Difference]: Start difference. First operand 9846 states and 27521 transitions. Second operand has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 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) [2022-01-18 02:48:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:26,099 INFO L93 Difference]: Finished difference Result 5188 states and 13822 transitions. [2022-01-18 02:48:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 02:48:26,100 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 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 141 [2022-01-18 02:48:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:26,107 INFO L225 Difference]: With dead ends: 5188 [2022-01-18 02:48:26,107 INFO L226 Difference]: Without dead ends: 3959 [2022-01-18 02:48:26,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1231, Invalid=4025, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 02:48:26,109 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 1353 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:26,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 2516 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:48:26,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2022-01-18 02:48:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3954. [2022-01-18 02:48:26,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3954 states, 3953 states have (on average 2.7409562357703012) internal successors, (10835), 3953 states have internal predecessors, (10835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3954 states to 3954 states and 10835 transitions. [2022-01-18 02:48:26,158 INFO L78 Accepts]: Start accepts. Automaton has 3954 states and 10835 transitions. Word has length 141 [2022-01-18 02:48:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:26,158 INFO L470 AbstractCegarLoop]: Abstraction has 3954 states and 10835 transitions. [2022-01-18 02:48:26,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 7.428571428571429) internal successors, (312), 42 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) [2022-01-18 02:48:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 3954 states and 10835 transitions. [2022-01-18 02:48:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 02:48:26,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:26,165 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 02:48:26,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:26,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:26,379 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:26,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1338867506, now seen corresponding path program 5 times [2022-01-18 02:48:26,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:26,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393025050] [2022-01-18 02:48:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:26,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-18 02:48:26,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:26,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393025050] [2022-01-18 02:48:26,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393025050] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:26,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881087391] [2022-01-18 02:48:26,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:48:26,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:26,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:26,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:26,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 02:48:26,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 02:48:26,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:26,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-18 02:48:26,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:27,878 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-18 02:48:27,879 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 19 [2022-01-18 02:48:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:27,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:28,401 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-18 02:48:28,401 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 76 treesize of output 78 [2022-01-18 02:48:30,476 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:30,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881087391] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:30,477 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:30,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 25, 25] total 50 [2022-01-18 02:48:30,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342991551] [2022-01-18 02:48:30,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:30,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 02:48:30,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:30,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 02:48:30,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=2077, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 02:48:30,478 INFO L87 Difference]: Start difference. First operand 3954 states and 10835 transitions. Second operand has 50 states, 50 states have (on average 7.38) internal successors, (369), 50 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:35,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:48:35,309 INFO L93 Difference]: Finished difference Result 27311 states and 75248 transitions. [2022-01-18 02:48:35,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 02:48:35,310 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 7.38) internal successors, (369), 50 states have internal predecessors, (369), 0 states have call successors, (0), 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 [2022-01-18 02:48:35,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:48:35,351 INFO L225 Difference]: With dead ends: 27311 [2022-01-18 02:48:35,351 INFO L226 Difference]: Without dead ends: 22586 [2022-01-18 02:48:35,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 272 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5760 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2849, Invalid=14707, Unknown=0, NotChecked=0, Total=17556 [2022-01-18 02:48:35,354 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 3269 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3269 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 841 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:48:35,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3269 Valid, 5084 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1417 Invalid, 0 Unknown, 841 Unchecked, 0.8s Time] [2022-01-18 02:48:35,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22586 states. [2022-01-18 02:48:35,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22586 to 10088. [2022-01-18 02:48:35,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10088 states, 10087 states have (on average 2.8478239317933975) internal successors, (28726), 10087 states have internal predecessors, (28726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10088 states to 10088 states and 28726 transitions. [2022-01-18 02:48:35,597 INFO L78 Accepts]: Start accepts. Automaton has 10088 states and 28726 transitions. Word has length 148 [2022-01-18 02:48:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:48:35,597 INFO L470 AbstractCegarLoop]: Abstraction has 10088 states and 28726 transitions. [2022-01-18 02:48:35,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 7.38) internal successors, (369), 50 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:48:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 10088 states and 28726 transitions. [2022-01-18 02:48:35,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-18 02:48:35,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:48:35,611 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 02:48:35,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 02:48:35,823 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,SelfDestructingSolverStorable13 [2022-01-18 02:48:35,823 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:48:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:48:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash -681406591, now seen corresponding path program 6 times [2022-01-18 02:48:35,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:48:35,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302756572] [2022-01-18 02:48:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:48:35,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:48:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:48:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 5 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:37,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:48:37,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302756572] [2022-01-18 02:48:37,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302756572] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:48:37,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168551553] [2022-01-18 02:48:37,427 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:48:37,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:48:37,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:48:37,428 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:48:37,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 02:48:37,602 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 02:48:37,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:48:37,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-18 02:48:37,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:48:38,400 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 [2022-01-18 02:48:38,747 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 [2022-01-18 02:48:38,823 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 [2022-01-18 02:48:39,839 INFO L353 Elim1Store]: treesize reduction 54, result has 1.8 percent of original size [2022-01-18 02:48:39,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 18 [2022-01-18 02:48:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:39,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:48:42,755 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:48:42,755 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 272 treesize of output 176 [2022-01-18 02:48:42,814 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 02:48:42,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1106 treesize of output 1028 [2022-01-18 02:48:42,884 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 02:48:42,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 950 treesize of output 908 [2022-01-18 02:48:42,946 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 02:48:42,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 830 treesize of output 668 [2022-01-18 02:48:48,998 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:48:48,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168551553] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:48:48,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:48:48,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 31] total 89 [2022-01-18 02:48:48,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995939546] [2022-01-18 02:48:48,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:48:48,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-18 02:48:48,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:48:48,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-18 02:48:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1451, Invalid=6329, Unknown=52, NotChecked=0, Total=7832 [2022-01-18 02:48:49,000 INFO L87 Difference]: Start difference. First operand 10088 states and 28726 transitions. Second operand has 89 states, 89 states have (on average 4.52808988764045) internal successors, (403), 89 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) [2022-01-18 02:49:04,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:04,525 INFO L93 Difference]: Finished difference Result 39904 states and 109805 transitions. [2022-01-18 02:49:04,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-18 02:49:04,526 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.52808988764045) internal successors, (403), 89 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 151 [2022-01-18 02:49:04,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:04,585 INFO L225 Difference]: With dead ends: 39904 [2022-01-18 02:49:04,586 INFO L226 Difference]: Without dead ends: 29867 [2022-01-18 02:49:04,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18664 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=6544, Invalid=45160, Unknown=52, NotChecked=0, Total=51756 [2022-01-18 02:49:04,589 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 5932 mSDsluCounter, 10997 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5932 SdHoareTripleChecker+Valid, 10590 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1828 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:04,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5932 Valid, 10590 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 3437 Invalid, 0 Unknown, 1828 Unchecked, 2.1s Time] [2022-01-18 02:49:04,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29867 states. [2022-01-18 02:49:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29867 to 14870. [2022-01-18 02:49:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14870 states, 14869 states have (on average 2.8387921178290405) internal successors, (42210), 14869 states have internal predecessors, (42210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14870 states to 14870 states and 42210 transitions. [2022-01-18 02:49:04,916 INFO L78 Accepts]: Start accepts. Automaton has 14870 states and 42210 transitions. Word has length 151 [2022-01-18 02:49:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:04,916 INFO L470 AbstractCegarLoop]: Abstraction has 14870 states and 42210 transitions. [2022-01-18 02:49:04,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.52808988764045) internal successors, (403), 89 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) [2022-01-18 02:49:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 14870 states and 42210 transitions. [2022-01-18 02:49:04,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-18 02:49:04,932 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:04,932 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 02:49:04,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 02:49:05,151 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,SelfDestructingSolverStorable14 [2022-01-18 02:49:05,151 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash 3636753, now seen corresponding path program 7 times [2022-01-18 02:49:05,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:05,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142388702] [2022-01-18 02:49:05,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:05,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:06,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:06,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142388702] [2022-01-18 02:49:06,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142388702] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:06,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167157955] [2022-01-18 02:49:06,187 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:49:06,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:06,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:06,188 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:49:06,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 02:49:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:06,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-18 02:49:06,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:49:08,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:49:08,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:49:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:49:08,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:08,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 18 [2022-01-18 02:49:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:08,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:49:09,041 INFO L353 Elim1Store]: treesize reduction 154, result has 41.0 percent of original size [2022-01-18 02:49:09,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 138 [2022-01-18 02:49:11,090 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:11,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167157955] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:49:11,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:49:11,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 31, 25] total 81 [2022-01-18 02:49:11,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898170765] [2022-01-18 02:49:11,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:49:11,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 02:49:11,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:49:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 02:49:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=942, Invalid=5538, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 02:49:11,093 INFO L87 Difference]: Start difference. First operand 14870 states and 42210 transitions. Second operand has 81 states, 81 states have (on average 4.987654320987654) internal successors, (404), 81 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:35,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:35,715 INFO L93 Difference]: Finished difference Result 85107 states and 239604 transitions. [2022-01-18 02:49:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 251 states. [2022-01-18 02:49:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.987654320987654) internal successors, (404), 81 states have internal predecessors, (404), 0 states have call successors, (0), 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 [2022-01-18 02:49:35,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:35,847 INFO L225 Difference]: With dead ends: 85107 [2022-01-18 02:49:35,847 INFO L226 Difference]: Without dead ends: 59861 [2022-01-18 02:49:35,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 252 SyntacticMatches, 4 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39965 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=10966, Invalid=91114, Unknown=0, NotChecked=0, Total=102080 [2022-01-18 02:49:35,853 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 7851 mSDsluCounter, 18090 mSDsCounter, 0 mSdLazyCounter, 7275 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7851 SdHoareTripleChecker+Valid, 17247 SdHoareTripleChecker+Invalid, 7767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 7275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:35,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7851 Valid, 17247 Invalid, 7767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 7275 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-18 02:49:35,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59861 states. [2022-01-18 02:49:36,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59861 to 22435. [2022-01-18 02:49:36,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22435 states, 22434 states have (on average 2.8016403672996346) internal successors, (62852), 22434 states have internal predecessors, (62852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:36,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22435 states to 22435 states and 62852 transitions. [2022-01-18 02:49:36,518 INFO L78 Accepts]: Start accepts. Automaton has 22435 states and 62852 transitions. Word has length 151 [2022-01-18 02:49:36,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:36,518 INFO L470 AbstractCegarLoop]: Abstraction has 22435 states and 62852 transitions. [2022-01-18 02:49:36,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.987654320987654) internal successors, (404), 81 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:36,519 INFO L276 IsEmpty]: Start isEmpty. Operand 22435 states and 62852 transitions. [2022-01-18 02:49:36,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-18 02:49:36,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:36,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 02:49:36,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 02:49:36,756 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,SelfDestructingSolverStorable15 [2022-01-18 02:49:36,757 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:36,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash -687760343, now seen corresponding path program 8 times [2022-01-18 02:49:36,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:36,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388744243] [2022-01-18 02:49:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:36,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:36,949 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 02:49:36,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:36,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388744243] [2022-01-18 02:49:36,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388744243] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:36,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478658233] [2022-01-18 02:49:36,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:49:36,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:36,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:36,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:49:36,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 02:49:37,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:49:37,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:49:37,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-18 02:49:37,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:49:37,828 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 [2022-01-18 02:49:38,109 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 [2022-01-18 02:49:38,175 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 [2022-01-18 02:49:38,894 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-18 02:49:38,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 22 [2022-01-18 02:49:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:38,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:49:41,198 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:49:41,198 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 272 treesize of output 176 [2022-01-18 02:49:41,255 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 02:49:41,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 528 treesize of output 528 [2022-01-18 02:49:41,313 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 02:49:41,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 450 treesize of output 408 [2022-01-18 02:49:41,368 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-18 02:49:41,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 330 treesize of output 348 [2022-01-18 02:49:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:49:45,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478658233] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:49:45,949 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:49:45,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 38, 34] total 75 [2022-01-18 02:49:45,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438605041] [2022-01-18 02:49:45,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:49:45,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-01-18 02:49:45,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:49:45,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-01-18 02:49:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1006, Invalid=4477, Unknown=67, NotChecked=0, Total=5550 [2022-01-18 02:49:45,950 INFO L87 Difference]: Start difference. First operand 22435 states and 62852 transitions. Second operand has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:49:57,819 INFO L93 Difference]: Finished difference Result 67217 states and 188505 transitions. [2022-01-18 02:49:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2022-01-18 02:49:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 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 [2022-01-18 02:49:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:49:57,942 INFO L225 Difference]: With dead ends: 67217 [2022-01-18 02:49:57,942 INFO L226 Difference]: Without dead ends: 54854 [2022-01-18 02:49:57,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 239 SyntacticMatches, 7 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20325 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=5686, Invalid=48303, Unknown=67, NotChecked=0, Total=54056 [2022-01-18 02:49:57,946 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 6108 mSDsluCounter, 13875 mSDsCounter, 0 mSdLazyCounter, 4953 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6108 SdHoareTripleChecker+Valid, 13172 SdHoareTripleChecker+Invalid, 7144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 4953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1772 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:49:57,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6108 Valid, 13172 Invalid, 7144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 4953 Invalid, 0 Unknown, 1772 Unchecked, 2.3s Time] [2022-01-18 02:49:58,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54854 states. [2022-01-18 02:49:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54854 to 24290. [2022-01-18 02:49:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24290 states, 24289 states have (on average 2.7980979044011693) internal successors, (67963), 24289 states have internal predecessors, (67963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24290 states to 24290 states and 67963 transitions. [2022-01-18 02:49:58,489 INFO L78 Accepts]: Start accepts. Automaton has 24290 states and 67963 transitions. Word has length 151 [2022-01-18 02:49:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:49:58,489 INFO L470 AbstractCegarLoop]: Abstraction has 24290 states and 67963 transitions. [2022-01-18 02:49:58,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 5.2) internal successors, (390), 75 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:49:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 24290 states and 67963 transitions. [2022-01-18 02:49:58,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-18 02:49:58,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:49:58,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 02:49:58,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 02:49:58,712 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,SelfDestructingSolverStorable16 [2022-01-18 02:49:58,713 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:49:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:49:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -25017248, now seen corresponding path program 9 times [2022-01-18 02:49:58,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:49:58,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693484303] [2022-01-18 02:49:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:49:58,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:49:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:49:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-18 02:49:58,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:49:58,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693484303] [2022-01-18 02:49:58,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693484303] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:49:58,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278840369] [2022-01-18 02:49:58,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:49:58,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:49:58,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:49:58,991 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:49:58,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 02:49:59,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 02:49:59,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:49:59,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 02:49:59,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:00,021 INFO L353 Elim1Store]: treesize reduction 100, result has 2.9 percent of original size [2022-01-18 02:50:00,022 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 73 treesize of output 24 [2022-01-18 02:50:00,069 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 1 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:50:00,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:00,509 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-01-18 02:50:00,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-01-18 02:50:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:50:01,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278840369] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:01,128 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:01,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-01-18 02:50:01,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717127870] [2022-01-18 02:50:01,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:01,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 02:50:01,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:01,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 02:50:01,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-01-18 02:50:01,130 INFO L87 Difference]: Start difference. First operand 24290 states and 67963 transitions. Second operand has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:02,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:02,657 INFO L93 Difference]: Finished difference Result 44820 states and 124327 transitions. [2022-01-18 02:50:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 02:50:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 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 158 [2022-01-18 02:50:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:02,727 INFO L225 Difference]: With dead ends: 44820 [2022-01-18 02:50:02,727 INFO L226 Difference]: Without dead ends: 39120 [2022-01-18 02:50:02,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 302 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=753, Invalid=3537, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 02:50:02,728 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 1312 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3486 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:02,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3486 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1008 Invalid, 0 Unknown, 28 Unchecked, 0.5s Time] [2022-01-18 02:50:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39120 states. [2022-01-18 02:50:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39120 to 26358. [2022-01-18 02:50:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26358 states, 26357 states have (on average 2.803126304207611) internal successors, (73882), 26357 states have internal predecessors, (73882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:03,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26358 states to 26358 states and 73882 transitions. [2022-01-18 02:50:03,313 INFO L78 Accepts]: Start accepts. Automaton has 26358 states and 73882 transitions. Word has length 158 [2022-01-18 02:50:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:03,313 INFO L470 AbstractCegarLoop]: Abstraction has 26358 states and 73882 transitions. [2022-01-18 02:50:03,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.478260869565217) internal successors, (287), 23 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 26358 states and 73882 transitions. [2022-01-18 02:50:03,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-18 02:50:03,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:03,340 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 02:50:03,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 02:50:03,540 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,SelfDestructingSolverStorable17 [2022-01-18 02:50:03,541 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:03,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash -914560453, now seen corresponding path program 10 times [2022-01-18 02:50:03,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:03,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099632987] [2022-01-18 02:50:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:03,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:50:03,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:03,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099632987] [2022-01-18 02:50:03,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099632987] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:03,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43382190] [2022-01-18 02:50:03,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:50:03,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:03,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:03,595 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:03,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 02:50:03,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:50:03,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:50:03,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 02:50:03,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:03,877 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:50:03,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 43 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:50:04,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43382190] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:04,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:04,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 9] total 13 [2022-01-18 02:50:04,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041069838] [2022-01-18 02:50:04,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:04,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 02:50:04,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:04,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 02:50:04,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-18 02:50:04,302 INFO L87 Difference]: Start difference. First operand 26358 states and 73882 transitions. Second operand has 13 states, 13 states have (on average 18.307692307692307) internal successors, (238), 13 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:04,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:04,499 INFO L93 Difference]: Finished difference Result 42606 states and 119423 transitions. [2022-01-18 02:50:04,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 02:50:04,500 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.307692307692307) internal successors, (238), 13 states have internal predecessors, (238), 0 states have call successors, (0), 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 [2022-01-18 02:50:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:04,582 INFO L225 Difference]: With dead ends: 42606 [2022-01-18 02:50:04,583 INFO L226 Difference]: Without dead ends: 41886 [2022-01-18 02:50:04,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-01-18 02:50:04,583 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 704 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:04,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 398 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 02:50:04,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41886 states. [2022-01-18 02:50:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41886 to 31786. [2022-01-18 02:50:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31786 states, 31785 states have (on average 2.8185936762623878) internal successors, (89589), 31785 states have internal predecessors, (89589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31786 states to 31786 states and 89589 transitions. [2022-01-18 02:50:05,146 INFO L78 Accepts]: Start accepts. Automaton has 31786 states and 89589 transitions. Word has length 161 [2022-01-18 02:50:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:05,146 INFO L470 AbstractCegarLoop]: Abstraction has 31786 states and 89589 transitions. [2022-01-18 02:50:05,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.307692307692307) internal successors, (238), 13 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 31786 states and 89589 transitions. [2022-01-18 02:50:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-18 02:50:05,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:05,174 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-18 02:50:05,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 02:50:05,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:05,387 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:05,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:05,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1197806162, now seen corresponding path program 11 times [2022-01-18 02:50:05,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:05,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727280983] [2022-01-18 02:50:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:05,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 51 proven. 49 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 02:50:05,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:05,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727280983] [2022-01-18 02:50:05,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727280983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:05,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784288563] [2022-01-18 02:50:05,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:50:05,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:05,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:05,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:05,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 02:50:05,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:50:05,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:50:05,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 02:50:05,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:06,537 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 38 proven. 62 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 02:50:06,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:07,365 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 53 proven. 47 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 02:50:07,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784288563] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:07,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:07,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 18] total 51 [2022-01-18 02:50:07,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761710989] [2022-01-18 02:50:07,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:07,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 02:50:07,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 02:50:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=2055, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 02:50:07,368 INFO L87 Difference]: Start difference. First operand 31786 states and 89589 transitions. Second operand has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:08,709 INFO L93 Difference]: Finished difference Result 12899 states and 35557 transitions. [2022-01-18 02:50:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-18 02:50:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 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 165 [2022-01-18 02:50:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:08,724 INFO L225 Difference]: With dead ends: 12899 [2022-01-18 02:50:08,724 INFO L226 Difference]: Without dead ends: 10412 [2022-01-18 02:50:08,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2238 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2006, Invalid=6550, Unknown=0, NotChecked=0, Total=8556 [2022-01-18 02:50:08,726 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 866 mSDsluCounter, 2423 mSDsCounter, 0 mSdLazyCounter, 644 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2537 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:08,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 2537 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 644 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 02:50:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10412 states. [2022-01-18 02:50:08,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10412 to 10407. [2022-01-18 02:50:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10407 states, 10406 states have (on average 2.8152027676340574) internal successors, (29295), 10406 states have internal predecessors, (29295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10407 states to 10407 states and 29295 transitions. [2022-01-18 02:50:08,863 INFO L78 Accepts]: Start accepts. Automaton has 10407 states and 29295 transitions. Word has length 165 [2022-01-18 02:50:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:08,863 INFO L470 AbstractCegarLoop]: Abstraction has 10407 states and 29295 transitions. [2022-01-18 02:50:08,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 7.176470588235294) internal successors, (366), 51 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 10407 states and 29295 transitions. [2022-01-18 02:50:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-18 02:50:08,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:08,873 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-01-18 02:50:08,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 02:50:09,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:09,075 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:09,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:09,079 INFO L85 PathProgramCache]: Analyzing trace with hash 761820768, now seen corresponding path program 12 times [2022-01-18 02:50:09,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:09,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972681147] [2022-01-18 02:50:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:09,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:10,413 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:10,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:10,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972681147] [2022-01-18 02:50:10,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972681147] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:10,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305747280] [2022-01-18 02:50:10,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:50:10,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:10,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:10,415 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:10,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 02:50:10,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:50:10,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:50:10,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 75 conjunts are in the unsatisfiable core [2022-01-18 02:50:10,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:50:13,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:50:13,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:50:13,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:50:13,489 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 02:50:13,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:50:13,492 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:50:13,493 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 27 [2022-01-18 02:50:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 20 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:13,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:14,599 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 02:50:14,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 152 [2022-01-18 02:50:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 11 proven. 113 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:17,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305747280] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:50:17,655 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:50:17,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 32, 27] total 86 [2022-01-18 02:50:17,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810117087] [2022-01-18 02:50:17,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:50:17,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-01-18 02:50:17,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:50:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-01-18 02:50:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=6483, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 02:50:17,656 INFO L87 Difference]: Start difference. First operand 10407 states and 29295 transitions. Second operand has 86 states, 86 states have (on average 5.325581395348837) internal successors, (458), 86 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:30,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:50:30,770 INFO L93 Difference]: Finished difference Result 57929 states and 158063 transitions. [2022-01-18 02:50:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 02:50:30,770 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 5.325581395348837) internal successors, (458), 86 states have internal predecessors, (458), 0 states have call successors, (0), 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 169 [2022-01-18 02:50:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:50:30,884 INFO L225 Difference]: With dead ends: 57929 [2022-01-18 02:50:30,885 INFO L226 Difference]: Without dead ends: 53915 [2022-01-18 02:50:30,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 309 SyntacticMatches, 1 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17089 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=5579, Invalid=42163, Unknown=0, NotChecked=0, Total=47742 [2022-01-18 02:50:30,887 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 3524 mSDsluCounter, 12532 mSDsCounter, 0 mSdLazyCounter, 3542 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 12334 SdHoareTripleChecker+Invalid, 6582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2810 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:50:30,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3524 Valid, 12334 Invalid, 6582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 3542 Invalid, 0 Unknown, 2810 Unchecked, 1.6s Time] [2022-01-18 02:50:30,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53915 states. [2022-01-18 02:50:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53915 to 31578. [2022-01-18 02:50:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31578 states, 31577 states have (on average 2.873515533457897) internal successors, (90737), 31577 states have internal predecessors, (90737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31578 states to 31578 states and 90737 transitions. [2022-01-18 02:50:31,549 INFO L78 Accepts]: Start accepts. Automaton has 31578 states and 90737 transitions. Word has length 169 [2022-01-18 02:50:31,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:50:31,549 INFO L470 AbstractCegarLoop]: Abstraction has 31578 states and 90737 transitions. [2022-01-18 02:50:31,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 5.325581395348837) internal successors, (458), 86 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:50:31,550 INFO L276 IsEmpty]: Start isEmpty. Operand 31578 states and 90737 transitions. [2022-01-18 02:50:31,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-18 02:50:31,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:50:31,573 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-01-18 02:50:31,589 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-01-18 02:50:31,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:31,787 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:50:31,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:50:31,788 INFO L85 PathProgramCache]: Analyzing trace with hash 841327630, now seen corresponding path program 13 times [2022-01-18 02:50:31,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:50:31,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365218286] [2022-01-18 02:50:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:50:31,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:50:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 5 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:32,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:50:32,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365218286] [2022-01-18 02:50:32,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365218286] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:50:32,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846533453] [2022-01-18 02:50:32,608 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:50:32,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:50:32,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:50:32,609 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:50:32,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 02:50:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:50:32,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 102 conjunts are in the unsatisfiable core [2022-01-18 02:50:32,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:50:33,456 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 [2022-01-18 02:50:33,635 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 [2022-01-18 02:50:33,876 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 [2022-01-18 02:50:34,206 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 [2022-01-18 02:50:34,281 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 [2022-01-18 02:50:36,761 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-01-18 02:50:36,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 30 [2022-01-18 02:50:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 58 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:50:36,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:50:51,724 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 02:50:51,724 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 3 case distinctions, treesize of input 414 treesize of output 200 [2022-01-18 02:50:51,802 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 02:50:51,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 520 treesize of output 564 [2022-01-18 02:50:51,883 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 02:50:51,883 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 444 treesize of output 448 [2022-01-18 02:50:51,967 INFO L353 Elim1Store]: treesize reduction 130, result has 48.2 percent of original size [2022-01-18 02:50:51,968 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 328 treesize of output 390 [2022-01-18 02:51:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 3 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:41,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846533453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:41,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:41,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 43, 41] total 107 [2022-01-18 02:51:41,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944968055] [2022-01-18 02:51:41,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:41,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-01-18 02:51:41,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:41,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-01-18 02:51:41,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1421, Invalid=9840, Unknown=81, NotChecked=0, Total=11342 [2022-01-18 02:51:41,744 INFO L87 Difference]: Start difference. First operand 31578 states and 90737 transitions. Second operand has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:51:51,171 INFO L93 Difference]: Finished difference Result 49648 states and 140605 transitions. [2022-01-18 02:51:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-18 02:51:51,172 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 0 states have call successors, (0), 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 169 [2022-01-18 02:51:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:51:51,280 INFO L225 Difference]: With dead ends: 49648 [2022-01-18 02:51:51,280 INFO L226 Difference]: Without dead ends: 49113 [2022-01-18 02:51:51,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 281 SyntacticMatches, 12 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11522 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=4253, Invalid=28245, Unknown=82, NotChecked=0, Total=32580 [2022-01-18 02:51:51,283 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 3813 mSDsluCounter, 9042 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3813 SdHoareTripleChecker+Valid, 9054 SdHoareTripleChecker+Invalid, 4591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2777 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 02:51:51,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3813 Valid, 9054 Invalid, 4591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1685 Invalid, 0 Unknown, 2777 Unchecked, 0.7s Time] [2022-01-18 02:51:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49113 states. [2022-01-18 02:51:51,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49113 to 32268. [2022-01-18 02:51:51,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32268 states, 32267 states have (on average 2.8703629094740757) internal successors, (92618), 32267 states have internal predecessors, (92618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32268 states to 32268 states and 92618 transitions. [2022-01-18 02:51:52,042 INFO L78 Accepts]: Start accepts. Automaton has 32268 states and 92618 transitions. Word has length 169 [2022-01-18 02:51:52,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:51:52,042 INFO L470 AbstractCegarLoop]: Abstraction has 32268 states and 92618 transitions. [2022-01-18 02:51:52,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 4.280373831775701) internal successors, (458), 107 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:51:52,043 INFO L276 IsEmpty]: Start isEmpty. Operand 32268 states and 92618 transitions. [2022-01-18 02:51:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-18 02:51:52,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:51:52,070 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-01-18 02:51:52,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 02:51:52,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-18 02:51:52,287 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:51:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:51:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1722352928, now seen corresponding path program 14 times [2022-01-18 02:51:52,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:51:52,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091471980] [2022-01-18 02:51:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:51:52,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:51:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:51:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:51:52,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:51:52,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091471980] [2022-01-18 02:51:52,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091471980] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:51:52,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575919724] [2022-01-18 02:51:52,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:51:52,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:51:52,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:51:52,483 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:51:52,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 02:51:52,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:51:52,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:51:52,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-18 02:51:52,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:51:54,523 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-18 02:51:54,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 25 [2022-01-18 02:51:54,567 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:54,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:51:55,376 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-01-18 02:51:55,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-01-18 02:51:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:51:57,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575919724] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:51:57,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:51:57,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 34, 33] total 68 [2022-01-18 02:51:57,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493144968] [2022-01-18 02:51:57,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:51:57,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-01-18 02:51:57,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:51:57,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-01-18 02:51:57,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=834, Invalid=3722, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 02:51:57,555 INFO L87 Difference]: Start difference. First operand 32268 states and 92618 transitions. Second operand has 68 states, 68 states have (on average 6.264705882352941) internal successors, (426), 68 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:14,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:14,514 INFO L93 Difference]: Finished difference Result 166936 states and 471237 transitions. [2022-01-18 02:52:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 268 states. [2022-01-18 02:52:14,514 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 6.264705882352941) internal successors, (426), 68 states have internal predecessors, (426), 0 states have call successors, (0), 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 169 [2022-01-18 02:52:14,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:15,031 INFO L225 Difference]: With dead ends: 166936 [2022-01-18 02:52:15,031 INFO L226 Difference]: Without dead ends: 156383 [2022-01-18 02:52:15,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 279 SyntacticMatches, 5 SemanticMatches, 310 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39259 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=9168, Invalid=87864, Unknown=0, NotChecked=0, Total=97032 [2022-01-18 02:52:15,036 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 5209 mSDsluCounter, 22736 mSDsCounter, 0 mSdLazyCounter, 8521 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5209 SdHoareTripleChecker+Valid, 21823 SdHoareTripleChecker+Invalid, 8956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 8521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:15,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5209 Valid, 21823 Invalid, 8956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 8521 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-01-18 02:52:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156383 states. [2022-01-18 02:52:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156383 to 56136. [2022-01-18 02:52:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56136 states, 56135 states have (on average 2.9349603634096373) internal successors, (164754), 56135 states have internal predecessors, (164754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56136 states to 56136 states and 164754 transitions. [2022-01-18 02:52:17,442 INFO L78 Accepts]: Start accepts. Automaton has 56136 states and 164754 transitions. Word has length 169 [2022-01-18 02:52:17,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:17,443 INFO L470 AbstractCegarLoop]: Abstraction has 56136 states and 164754 transitions. [2022-01-18 02:52:17,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 6.264705882352941) internal successors, (426), 68 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:17,443 INFO L276 IsEmpty]: Start isEmpty. Operand 56136 states and 164754 transitions. [2022-01-18 02:52:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 02:52:17,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:17,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-18 02:52:17,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 02:52:17,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:17,677 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:17,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1266953787, now seen corresponding path program 15 times [2022-01-18 02:52:17,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:17,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829876789] [2022-01-18 02:52:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:17,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:17,908 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:52:17,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:17,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829876789] [2022-01-18 02:52:17,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829876789] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:17,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985937474] [2022-01-18 02:52:17,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 02:52:17,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:17,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:17,912 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:17,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 02:52:18,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 02:52:18,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:18,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 91 conjunts are in the unsatisfiable core [2022-01-18 02:52:18,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:20,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:20,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:20,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:20,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:20,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:20,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 02:52:20,417 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:52:20,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 24 [2022-01-18 02:52:20,566 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:20,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:21,699 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 02:52:21,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 172 [2022-01-18 02:52:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:23,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985937474] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:23,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:23,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 31, 26] total 60 [2022-01-18 02:52:23,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220307673] [2022-01-18 02:52:23,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:23,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-01-18 02:52:23,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:23,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-01-18 02:52:23,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=802, Invalid=2738, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 02:52:23,379 INFO L87 Difference]: Start difference. First operand 56136 states and 164754 transitions. Second operand has 60 states, 60 states have (on average 7.25) internal successors, (435), 60 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:38,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:52:38,600 INFO L93 Difference]: Finished difference Result 203253 states and 581359 transitions. [2022-01-18 02:52:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 252 states. [2022-01-18 02:52:38,600 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 7.25) internal successors, (435), 60 states have internal predecessors, (435), 0 states have call successors, (0), 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 172 [2022-01-18 02:52:38,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:52:39,152 INFO L225 Difference]: With dead ends: 203253 [2022-01-18 02:52:39,152 INFO L226 Difference]: Without dead ends: 177325 [2022-01-18 02:52:39,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 295 SyntacticMatches, 5 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35633 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=11766, Invalid=70890, Unknown=0, NotChecked=0, Total=82656 [2022-01-18 02:52:39,156 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 4611 mSDsluCounter, 13250 mSDsCounter, 0 mSdLazyCounter, 4828 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 12648 SdHoareTripleChecker+Invalid, 5031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 4828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 02:52:39,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 12648 Invalid, 5031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 4828 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-18 02:52:39,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177325 states. [2022-01-18 02:52:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177325 to 89273. [2022-01-18 02:52:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89273 states, 89272 states have (on average 2.9028474773725246) internal successors, (259143), 89272 states have internal predecessors, (259143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89273 states to 89273 states and 259143 transitions. [2022-01-18 02:52:42,118 INFO L78 Accepts]: Start accepts. Automaton has 89273 states and 259143 transitions. Word has length 172 [2022-01-18 02:52:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:52:42,118 INFO L470 AbstractCegarLoop]: Abstraction has 89273 states and 259143 transitions. [2022-01-18 02:52:42,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 7.25) internal successors, (435), 60 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:52:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 89273 states and 259143 transitions. [2022-01-18 02:52:42,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 02:52:42,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:52:42,160 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-18 02:52:42,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 02:52:42,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:42,361 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:52:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:52:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash -966067763, now seen corresponding path program 16 times [2022-01-18 02:52:42,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:52:42,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372122902] [2022-01-18 02:52:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:52:42,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:52:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:52:43,548 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:43,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:52:43,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372122902] [2022-01-18 02:52:43,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372122902] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:52:43,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211757344] [2022-01-18 02:52:43,549 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 02:52:43,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:52:43,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:52:43,550 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:52:43,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 02:52:43,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 02:52:43,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:52:43,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 90 conjunts are in the unsatisfiable core [2022-01-18 02:52:43,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:52:45,632 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 02:52:45,632 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 94 treesize of output 24 [2022-01-18 02:52:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:45,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:52:47,037 INFO L353 Elim1Store]: treesize reduction 288, result has 41.3 percent of original size [2022-01-18 02:52:47,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 242 [2022-01-18 02:52:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:52:49,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211757344] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:52:49,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:52:49,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 28] total 79 [2022-01-18 02:52:49,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611222678] [2022-01-18 02:52:49,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:52:49,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-18 02:52:49,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:52:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-18 02:52:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=5202, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 02:52:49,350 INFO L87 Difference]: Start difference. First operand 89273 states and 259143 transitions. Second operand has 79 states, 79 states have (on average 5.708860759493671) internal successors, (451), 79 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:27,158 INFO L93 Difference]: Finished difference Result 447373 states and 1288067 transitions. [2022-01-18 02:53:27,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 290 states. [2022-01-18 02:53:27,159 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.708860759493671) internal successors, (451), 79 states have internal predecessors, (451), 0 states have call successors, (0), 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 172 [2022-01-18 02:53:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:28,745 INFO L225 Difference]: With dead ends: 447373 [2022-01-18 02:53:28,745 INFO L226 Difference]: Without dead ends: 392375 [2022-01-18 02:53:28,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 294 SyntacticMatches, 6 SemanticMatches, 356 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48114 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=17454, Invalid=110352, Unknown=0, NotChecked=0, Total=127806 [2022-01-18 02:53:28,751 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 5342 mSDsluCounter, 28894 mSDsCounter, 0 mSdLazyCounter, 11308 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5342 SdHoareTripleChecker+Valid, 28090 SdHoareTripleChecker+Invalid, 11683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 11308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:28,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5342 Valid, 28090 Invalid, 11683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [375 Valid, 11308 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-01-18 02:53:29,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392375 states. [2022-01-18 02:53:33,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392375 to 123901. [2022-01-18 02:53:33,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123901 states, 123900 states have (on average 2.8646811945117028) internal successors, (354934), 123900 states have internal predecessors, (354934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:34,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123901 states to 123901 states and 354934 transitions. [2022-01-18 02:53:34,132 INFO L78 Accepts]: Start accepts. Automaton has 123901 states and 354934 transitions. Word has length 172 [2022-01-18 02:53:34,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:34,132 INFO L470 AbstractCegarLoop]: Abstraction has 123901 states and 354934 transitions. [2022-01-18 02:53:34,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.708860759493671) internal successors, (451), 79 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 123901 states and 354934 transitions. [2022-01-18 02:53:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 02:53:34,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:34,447 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-18 02:53:34,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 02:53:34,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:34,647 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:34,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:34,648 INFO L85 PathProgramCache]: Analyzing trace with hash -5535603, now seen corresponding path program 17 times [2022-01-18 02:53:34,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:34,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105494169] [2022-01-18 02:53:34,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:34,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:35,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:35,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105494169] [2022-01-18 02:53:35,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105494169] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:35,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995994398] [2022-01-18 02:53:35,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 02:53:35,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:35,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:35,589 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:35,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 02:53:35,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 02:53:35,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:53:35,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-18 02:53:35,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:36,753 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 02:53:36,753 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 94 treesize of output 24 [2022-01-18 02:53:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:53:36,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:37,609 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-01-18 02:53:37,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 256 [2022-01-18 02:53:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 10 proven. 78 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:53:38,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995994398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:53:38,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:53:38,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 14, 13] total 51 [2022-01-18 02:53:38,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092428601] [2022-01-18 02:53:38,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:53:38,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 02:53:38,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:53:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 02:53:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=2269, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 02:53:38,471 INFO L87 Difference]: Start difference. First operand 123901 states and 354934 transitions. Second operand has 51 states, 51 states have (on average 8.117647058823529) internal successors, (414), 51 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:46,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:53:46,337 INFO L93 Difference]: Finished difference Result 196765 states and 557528 transitions. [2022-01-18 02:53:46,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 02:53:46,338 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 8.117647058823529) internal successors, (414), 51 states have internal predecessors, (414), 0 states have call successors, (0), 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 172 [2022-01-18 02:53:46,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:53:47,048 INFO L225 Difference]: With dead ends: 196765 [2022-01-18 02:53:47,048 INFO L226 Difference]: Without dead ends: 189954 [2022-01-18 02:53:47,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 325 SyntacticMatches, 3 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8963 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2331, Invalid=22475, Unknown=0, NotChecked=0, Total=24806 [2022-01-18 02:53:47,050 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 2100 mSDsluCounter, 9171 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 9053 SdHoareTripleChecker+Invalid, 3559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 02:53:47,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2100 Valid, 9053 Invalid, 3559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 02:53:47,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189954 states. [2022-01-18 02:53:49,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189954 to 123972. [2022-01-18 02:53:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123972 states, 123971 states have (on average 2.8463511627719384) internal successors, (352865), 123971 states have internal predecessors, (352865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123972 states to 123972 states and 352865 transitions. [2022-01-18 02:53:50,497 INFO L78 Accepts]: Start accepts. Automaton has 123972 states and 352865 transitions. Word has length 172 [2022-01-18 02:53:50,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:53:50,497 INFO L470 AbstractCegarLoop]: Abstraction has 123972 states and 352865 transitions. [2022-01-18 02:53:50,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 8.117647058823529) internal successors, (414), 51 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:53:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 123972 states and 352865 transitions. [2022-01-18 02:53:50,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 02:53:50,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:53:50,548 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-18 02:53:50,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 02:53:50,748 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,SelfDestructingSolverStorable25 [2022-01-18 02:53:50,749 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:53:50,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:53:50,749 INFO L85 PathProgramCache]: Analyzing trace with hash -979234251, now seen corresponding path program 18 times [2022-01-18 02:53:50,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:53:50,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630342128] [2022-01-18 02:53:50,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:53:50,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:53:50,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:53:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 28 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:53:52,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:53:52,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630342128] [2022-01-18 02:53:52,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630342128] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:53:52,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349692216] [2022-01-18 02:53:52,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 02:53:52,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:53:52,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:53:52,780 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:53:52,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 02:53:53,120 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 02:53:53,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:53:53,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 68 conjunts are in the unsatisfiable core [2022-01-18 02:53:53,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:53:54,362 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 02:53:54,362 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 94 treesize of output 24 [2022-01-18 02:53:54,384 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-18 02:53:54,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:53:55,457 INFO L353 Elim1Store]: treesize reduction 274, result has 44.2 percent of original size [2022-01-18 02:53:55,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 143 treesize of output 254 [2022-01-18 02:53:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 86 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:53:56,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349692216] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:53:56,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:53:56,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 18, 13] total 63 [2022-01-18 02:53:56,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568874674] [2022-01-18 02:53:56,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:53:56,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-01-18 02:53:56,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:53:56,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-01-18 02:53:56,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3613, Unknown=0, NotChecked=0, Total=3906 [2022-01-18 02:53:56,613 INFO L87 Difference]: Start difference. First operand 123972 states and 352865 transitions. Second operand has 63 states, 63 states have (on average 6.9523809523809526) internal successors, (438), 63 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:56:12,908 INFO L93 Difference]: Finished difference Result 590550 states and 1689677 transitions. [2022-01-18 02:56:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 849 states. [2022-01-18 02:56:12,908 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 6.9523809523809526) internal successors, (438), 63 states have internal predecessors, (438), 0 states have call successors, (0), 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 172 [2022-01-18 02:56:12,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:56:15,588 INFO L225 Difference]: With dead ends: 590550 [2022-01-18 02:56:15,588 INFO L226 Difference]: Without dead ends: 529843 [2022-01-18 02:56:15,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 890 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357309 ImplicationChecksByTransitivity, 121.4s TimeCoverageRelationStatistics Valid=47982, Invalid=746790, Unknown=0, NotChecked=0, Total=794772 [2022-01-18 02:56:15,641 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 7127 mSDsluCounter, 40057 mSDsCounter, 0 mSdLazyCounter, 15957 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7127 SdHoareTripleChecker+Valid, 37861 SdHoareTripleChecker+Invalid, 16499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 15957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-18 02:56:15,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7127 Valid, 37861 Invalid, 16499 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [542 Valid, 15957 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-01-18 02:56:16,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529843 states. [2022-01-18 02:56:23,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529843 to 167291. [2022-01-18 02:56:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167291 states, 167290 states have (on average 2.8589395660230736) internal successors, (478272), 167290 states have internal predecessors, (478272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:23,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167291 states to 167291 states and 478272 transitions. [2022-01-18 02:56:23,822 INFO L78 Accepts]: Start accepts. Automaton has 167291 states and 478272 transitions. Word has length 172 [2022-01-18 02:56:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:56:23,822 INFO L470 AbstractCegarLoop]: Abstraction has 167291 states and 478272 transitions. [2022-01-18 02:56:23,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 6.9523809523809526) internal successors, (438), 63 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:56:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 167291 states and 478272 transitions. [2022-01-18 02:56:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 02:56:24,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:56:24,237 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-18 02:56:24,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 02:56:24,453 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,SelfDestructingSolverStorable26 [2022-01-18 02:56:24,453 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:56:24,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:56:24,455 INFO L85 PathProgramCache]: Analyzing trace with hash -18702091, now seen corresponding path program 19 times [2022-01-18 02:56:24,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:56:24,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345962851] [2022-01-18 02:56:24,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:56:24,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:56:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 02:56:24,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:56:24,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345962851] [2022-01-18 02:56:24,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345962851] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:56:24,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882786227] [2022-01-18 02:56:24,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 02:56:24,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:56:24,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:56:24,684 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:56:24,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 02:56:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:56:24,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 109 conjunts are in the unsatisfiable core [2022-01-18 02:56:24,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:56:25,502 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 [2022-01-18 02:56:25,679 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 [2022-01-18 02:56:25,898 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 [2022-01-18 02:56:26,208 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 [2022-01-18 02:56:26,284 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 [2022-01-18 02:56:27,502 INFO L353 Elim1Store]: treesize reduction 170, result has 1.7 percent of original size [2022-01-18 02:56:27,502 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 97 treesize of output 30 [2022-01-18 02:56:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:56:27,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:56:38,640 INFO L353 Elim1Store]: treesize reduction 132, result has 22.8 percent of original size [2022-01-18 02:56:38,641 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 3 case distinctions, treesize of input 552 treesize of output 254 [2022-01-18 02:56:38,782 INFO L353 Elim1Store]: treesize reduction 307, result has 36.6 percent of original size [2022-01-18 02:56:38,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1412 treesize of output 1380 [2022-01-18 02:56:38,932 INFO L353 Elim1Store]: treesize reduction 307, result has 36.6 percent of original size [2022-01-18 02:56:38,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1204 treesize of output 1060 [2022-01-18 02:56:39,076 INFO L353 Elim1Store]: treesize reduction 307, result has 36.6 percent of original size [2022-01-18 02:56:39,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 884 treesize of output 900 [2022-01-18 02:57:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:12,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882786227] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:57:12,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:57:12,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 41, 39] total 83 [2022-01-18 02:57:12,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244142523] [2022-01-18 02:57:12,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:57:12,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-01-18 02:57:12,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:57:12,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-01-18 02:57:12,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=5934, Unknown=80, NotChecked=0, Total=6806 [2022-01-18 02:57:12,784 INFO L87 Difference]: Start difference. First operand 167291 states and 478272 transitions. Second operand has 83 states, 83 states have (on average 5.373493975903615) internal successors, (446), 83 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 02:57:25,478 INFO L93 Difference]: Finished difference Result 258596 states and 738808 transitions. [2022-01-18 02:57:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-01-18 02:57:25,478 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.373493975903615) internal successors, (446), 83 states have internal predecessors, (446), 0 states have call successors, (0), 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 172 [2022-01-18 02:57:25,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 02:57:26,549 INFO L225 Difference]: With dead ends: 258596 [2022-01-18 02:57:26,549 INFO L226 Difference]: Without dead ends: 249497 [2022-01-18 02:57:26,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 276 SyntacticMatches, 11 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15941 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=4236, Invalid=41266, Unknown=80, NotChecked=0, Total=45582 [2022-01-18 02:57:26,551 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 3786 mSDsluCounter, 18022 mSDsCounter, 0 mSdLazyCounter, 3341 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3786 SdHoareTripleChecker+Valid, 17238 SdHoareTripleChecker+Invalid, 8829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5290 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 02:57:26,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3786 Valid, 17238 Invalid, 8829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3341 Invalid, 0 Unknown, 5290 Unchecked, 1.6s Time] [2022-01-18 02:57:26,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249497 states. [2022-01-18 02:57:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249497 to 171992. [2022-01-18 02:57:30,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171992 states, 171991 states have (on average 2.8509224319877204) internal successors, (490333), 171991 states have internal predecessors, (490333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171992 states to 171992 states and 490333 transitions. [2022-01-18 02:57:31,274 INFO L78 Accepts]: Start accepts. Automaton has 171992 states and 490333 transitions. Word has length 172 [2022-01-18 02:57:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 02:57:31,274 INFO L470 AbstractCegarLoop]: Abstraction has 171992 states and 490333 transitions. [2022-01-18 02:57:31,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.373493975903615) internal successors, (446), 83 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 02:57:31,274 INFO L276 IsEmpty]: Start isEmpty. Operand 171992 states and 490333 transitions. [2022-01-18 02:57:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-18 02:57:31,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 02:57:31,702 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-01-18 02:57:31,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 02:57:31,902 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,SelfDestructingSolverStorable27 [2022-01-18 02:57:31,902 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 02:57:31,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 02:57:31,903 INFO L85 PathProgramCache]: Analyzing trace with hash 368158285, now seen corresponding path program 20 times [2022-01-18 02:57:31,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 02:57:31,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075056999] [2022-01-18 02:57:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 02:57:31,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 02:57:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 02:57:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 14 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:33,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 02:57:33,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075056999] [2022-01-18 02:57:33,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075056999] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 02:57:33,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412237709] [2022-01-18 02:57:33,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 02:57:33,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 02:57:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 02:57:33,998 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 02:57:33,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 02:57:34,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 02:57:34,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 02:57:34,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 106 conjunts are in the unsatisfiable core [2022-01-18 02:57:34,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 02:57:35,450 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 [2022-01-18 02:57:35,875 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 [2022-01-18 02:57:35,960 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 [2022-01-18 02:57:37,243 INFO L353 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2022-01-18 02:57:37,243 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 94 treesize of output 24 [2022-01-18 02:57:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:57:37,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 02:57:40,890 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 02:57:40,891 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 361 treesize of output 229 [2022-01-18 02:57:41,012 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 02:57:41,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 680 treesize of output 707 [2022-01-18 02:57:41,132 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 02:57:41,132 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 575 treesize of output 545 [2022-01-18 02:57:41,246 INFO L353 Elim1Store]: treesize reduction 358, result has 27.1 percent of original size [2022-01-18 02:57:41,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 413 treesize of output 464 [2022-01-18 02:58:08,164 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 5 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 02:58:08,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412237709] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 02:58:08,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 02:58:08,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 34] total 103 [2022-01-18 02:58:08,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722538483] [2022-01-18 02:58:08,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 02:58:08,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-01-18 02:58:08,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 02:58:08,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-01-18 02:58:08,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1327, Invalid=9099, Unknown=80, NotChecked=0, Total=10506 [2022-01-18 02:58:08,166 INFO L87 Difference]: Start difference. First operand 171992 states and 490333 transitions. Second operand has 103 states, 103 states have (on average 4.524271844660194) internal successors, (466), 103 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 03:00:34,143 WARN L244 SmtUtils]: Removed 18 from assertion stack [2022-01-18 03:00:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 461 states. [2022-01-18 03:00:34,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 308 SyntacticMatches, 39 SemanticMatches, 551 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130599 ImplicationChecksByTransitivity, 134.3s TimeCoverageRelationStatistics Valid=32372, Invalid=272804, Unknown=80, NotChecked=0, Total=305256 [2022-01-18 03:00:34,154 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 16808 mSDsluCounter, 50993 mSDsCounter, 0 mSdLazyCounter, 18245 mSolverCounterSat, 1441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16808 SdHoareTripleChecker+Valid, 50119 SdHoareTripleChecker+Invalid, 24178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1441 IncrementalHoareTripleChecker+Valid, 18245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4492 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:00:34,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16808 Valid, 50119 Invalid, 24178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1441 Valid, 18245 Invalid, 0 Unknown, 4492 Unchecked, 11.4s Time] [2022-01-18 03:00:34,155 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 03:00:34,155 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 03:00:34,160 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 03:00:34,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 03:00:34,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:00:34,360 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (171992states) and FLOYD_HOARE automaton (currently 461 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 135 for 142ms.. [2022-01-18 03:00:34,362 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 03:00:34,362 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 03:00:34,364 INFO L732 BasicCegarLoop]: Path program histogram: [20, 4, 1, 1, 1, 1, 1] [2022-01-18 03:00:34,365 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:00:34,366 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:00:34,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:00:34 BasicIcfg [2022-01-18 03:00:34,367 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:00:34,367 INFO L158 Benchmark]: Toolchain (without parser) took 758803.78ms. Allocated memory was 398.5MB in the beginning and 8.6GB in the end (delta: 8.2GB). Free memory was 343.1MB in the beginning and 5.7GB in the end (delta: -5.3GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2022-01-18 03:00:34,367 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 398.5MB. Free memory is still 360.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:00:34,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.44ms. Allocated memory was 398.5MB in the beginning and 543.2MB in the end (delta: 144.7MB). Free memory was 342.9MB in the beginning and 514.7MB in the end (delta: -171.8MB). Peak memory consumption was 10.4MB. Max. memory is 16.0GB. [2022-01-18 03:00:34,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.04ms. Allocated memory is still 543.2MB. Free memory was 514.7MB in the beginning and 513.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:00:34,367 INFO L158 Benchmark]: Boogie Preprocessor took 17.37ms. Allocated memory is still 543.2MB. Free memory was 513.7MB in the beginning and 511.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:00:34,368 INFO L158 Benchmark]: RCFGBuilder took 356.54ms. Allocated memory is still 543.2MB. Free memory was 511.6MB in the beginning and 489.0MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2022-01-18 03:00:34,368 INFO L158 Benchmark]: TraceAbstraction took 758171.48ms. Allocated memory was 543.2MB in the beginning and 8.6GB in the end (delta: 8.0GB). Free memory was 489.0MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2022-01-18 03:00:34,368 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 398.5MB. Free memory is still 360.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 222.44ms. Allocated memory was 398.5MB in the beginning and 543.2MB in the end (delta: 144.7MB). Free memory was 342.9MB in the beginning and 514.7MB in the end (delta: -171.8MB). Peak memory consumption was 10.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.04ms. Allocated memory is still 543.2MB. Free memory was 514.7MB in the beginning and 513.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 17.37ms. Allocated memory is still 543.2MB. Free memory was 513.7MB in the beginning and 511.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 356.54ms. Allocated memory is still 543.2MB. Free memory was 511.6MB in the beginning and 489.0MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 758171.48ms. Allocated memory was 543.2MB in the beginning and 8.6GB in the end (delta: 8.0GB). Free memory was 489.0MB in the beginning and 5.7GB in the end (delta: -5.2GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (171992states) and FLOYD_HOARE automaton (currently 461 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 135 for 142ms.. - TimeoutResultAtElement [Line: 89]: 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 (171992states) and FLOYD_HOARE automaton (currently 461 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 135 for 142ms.. - TimeoutResultAtElement [Line: 88]: 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 (171992states) and FLOYD_HOARE automaton (currently 461 states, 103 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 135 for 142ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 758.1s, OverallIterations: 29, TraceHistogramMax: 4, PathProgramHistogramMax: 20, EmptinessCheckTime: 1.5s, AutomataDifference: 471.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87533 SdHoareTripleChecker+Valid, 51.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87533 mSDsluCounter, 267377 SdHoareTripleChecker+Invalid, 44.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21077 IncrementalHoareTripleChecker+Unchecked, 274604 mSDsCounter, 5792 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94066 IncrementalHoareTripleChecker+Invalid, 120935 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5792 mSolverCounterUnsat, 9410 mSDtfsCounter, 94066 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10999 GetRequests, 6185 SyntacticMatches, 122 SemanticMatches, 4691 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763496 ImplicationChecksByTransitivity, 424.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171992occurred in iteration=28, InterpolantAutomatonStates: 3215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 32.4s AutomataMinimizationTime, 28 MinimizatonAttempts, 1135805 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 242.8s InterpolantComputationTime, 7602 NumberOfCodeBlocks, 7515 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 11025 ConstructedInterpolants, 427 QuantifiedInterpolants, 282484 SizeOfPredicates, 711 NumberOfNonLiveVariables, 7651 ConjunctsInSsa, 1462 ConjunctsInUnsatCore, 75 InterpolantComputations, 6 PerfectInterpolantSequences, 1306/5802 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