/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 11:56:03,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 11:56:03,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 11:56:03,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 11:56:03,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-15 11:56:03,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-15 11:56:03,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-15 11:56:03,371 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 [2022-02-15 11:56:03,383 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 11:56:03,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 11:56:03,383 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 11:56:03,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 11:56:03,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 11:56:03,384 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 11:56:03,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 11:56:03,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 11:56:03,384 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 11:56:03,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 11:56:03,385 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 11:56:03,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:56:03,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 11:56:03,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 11:56:03,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 11:56:03,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 11:56:03,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 11:56:03,387 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 11:56:03,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 11:56:03,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 11:56:03,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 11:56:03,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 11:56:03,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 11:56:03,569 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 11:56:03,569 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 11:56:03,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-02-15 11:56:03,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834b5847/78a6f495cd1449929e86f0e119c28d6f/FLAGa2ccedb30 [2022-02-15 11:56:03,948 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 11:56:03,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-02-15 11:56:03,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834b5847/78a6f495cd1449929e86f0e119c28d6f/FLAGa2ccedb30 [2022-02-15 11:56:03,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1834b5847/78a6f495cd1449929e86f0e119c28d6f [2022-02-15 11:56:03,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 11:56:03,968 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-15 11:56:03,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 11:56:03,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 11:56:03,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 11:56:03,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:56:03" (1/1) ... [2022-02-15 11:56:04,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e0608e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04, skipping insertion in model container [2022-02-15 11:56:04,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:56:03" (1/1) ... [2022-02-15 11:56:04,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 11:56:04,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 11:56:04,161 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-more-queue-add-2-nl.wvr.c[2870,2883] [2022-02-15 11:56:04,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:56:04,182 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 11:56:04,226 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-more-queue-add-2-nl.wvr.c[2870,2883] [2022-02-15 11:56:04,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 11:56:04,245 INFO L208 MainTranslator]: Completed translation [2022-02-15 11:56:04,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04 WrapperNode [2022-02-15 11:56:04,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 11:56:04,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 11:56:04,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 11:56:04,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 11:56:04,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,322 INFO L137 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 163 [2022-02-15 11:56:04,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 11:56:04,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 11:56:04,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 11:56:04,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 11:56:04,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 11:56:04,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 11:56:04,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 11:56:04,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 11:56:04,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (1/1) ... [2022-02-15 11:56:04,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 11:56:04,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:56:04,388 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) [2022-02-15 11:56:04,399 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 [2022-02-15 11:56:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 11:56:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-15 11:56:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 11:56:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 11:56:04,419 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 11:56:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 11:56:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 11:56:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 11:56:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 11:56:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-02-15 11:56:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-02-15 11:56:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-02-15 11:56:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 11:56:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 11:56:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 11:56:04,421 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 11:56:04,474 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 11:56:04,475 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 11:56:04,693 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 11:56:04,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 11:56:04,748 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-02-15 11:56:04,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:56:04 BoogieIcfgContainer [2022-02-15 11:56:04,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 11:56:04,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 11:56:04,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 11:56:04,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 11:56:04,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:56:03" (1/3) ... [2022-02-15 11:56:04,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bc074b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:56:04, skipping insertion in model container [2022-02-15 11:56:04,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:56:04" (2/3) ... [2022-02-15 11:56:04,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32bc074b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:56:04, skipping insertion in model container [2022-02-15 11:56:04,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:56:04" (3/3) ... [2022-02-15 11:56:04,755 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-02-15 11:56:04,759 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 11:56:04,760 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 11:56:04,760 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 11:56:04,760 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 11:56:04,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,796 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,797 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,798 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,799 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,803 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,804 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-15 11:56:04,807 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-02-15 11:56:04,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 11:56:04,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 11:56:04,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-15 11:56:04,846 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 141 places, 145 transitions, 306 flow [2022-02-15 11:56:04,900 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 673 states, 672 states have (on average 2.6324404761904763) internal successors, (1769), 672 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 673 states, 672 states have (on average 2.6324404761904763) internal successors, (1769), 672 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-02-15 11:56:04,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:04,919 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] [2022-02-15 11:56:04,919 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:04,923 INFO L85 PathProgramCache]: Analyzing trace with hash 753294411, now seen corresponding path program 1 times [2022-02-15 11:56:04,929 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:04,929 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514686792] [2022-02-15 11:56:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:04,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:05,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:05,141 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:05,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514686792] [2022-02-15 11:56:05,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514686792] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:05,142 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:05,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-15 11:56:05,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749826820] [2022-02-15 11:56:05,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:05,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-15 11:56:05,147 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-15 11:56:05,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-15 11:56:05,169 INFO L87 Difference]: Start difference. First operand has 673 states, 672 states have (on average 2.6324404761904763) internal successors, (1769), 672 states have internal predecessors, (1769), 0 states have call successors, (0), 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 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:05,222 INFO L93 Difference]: Finished difference Result 673 states and 1616 transitions. [2022-02-15 11:56:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-15 11:56:05,224 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-02-15 11:56:05,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:05,235 INFO L225 Difference]: With dead ends: 673 [2022-02-15 11:56:05,236 INFO L226 Difference]: Without dead ends: 669 [2022-02-15 11:56:05,237 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 [2022-02-15 11:56:05,239 INFO L933 BasicCegarLoop]: 119 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, 119 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 [2022-02-15 11:56:05,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:56:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-02-15 11:56:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-02-15 11:56:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 2.413173652694611) internal successors, (1612), 668 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1612 transitions. [2022-02-15 11:56:05,320 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1612 transitions. Word has length 104 [2022-02-15 11:56:05,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:05,321 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 1612 transitions. [2022-02-15 11:56:05,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 52.0) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1612 transitions. [2022-02-15 11:56:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-02-15 11:56:05,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:05,328 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] [2022-02-15 11:56:05,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 11:56:05,328 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:05,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:05,331 INFO L85 PathProgramCache]: Analyzing trace with hash -745282047, now seen corresponding path program 1 times [2022-02-15 11:56:05,331 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:05,331 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238633050] [2022-02-15 11:56:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:05,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:05,489 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:05,489 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238633050] [2022-02-15 11:56:05,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238633050] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:05,490 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:05,490 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 11:56:05,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416161505] [2022-02-15 11:56:05,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:05,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 11:56:05,491 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 11:56:05,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-15 11:56:05,492 INFO L87 Difference]: Start difference. First operand 669 states and 1612 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:05,572 INFO L93 Difference]: Finished difference Result 778 states and 1820 transitions. [2022-02-15 11:56:05,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 11:56:05,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-02-15 11:56:05,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:05,575 INFO L225 Difference]: With dead ends: 778 [2022-02-15 11:56:05,575 INFO L226 Difference]: Without dead ends: 675 [2022-02-15 11:56:05,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-02-15 11:56:05,576 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 278 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:05,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 329 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:56:05,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2022-02-15 11:56:05,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 670. [2022-02-15 11:56:05,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 669 states have (on average 2.411061285500747) internal successors, (1613), 669 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1613 transitions. [2022-02-15 11:56:05,592 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1613 transitions. Word has length 108 [2022-02-15 11:56:05,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:05,593 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 1613 transitions. [2022-02-15 11:56:05,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,593 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1613 transitions. [2022-02-15 11:56:05,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:05,596 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:05,596 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:05,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 11:56:05,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:05,597 INFO L85 PathProgramCache]: Analyzing trace with hash -38797508, now seen corresponding path program 1 times [2022-02-15 11:56:05,597 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:05,597 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261673968] [2022-02-15 11:56:05,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:05,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:05,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:05,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261673968] [2022-02-15 11:56:05,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261673968] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:05,729 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:05,729 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 11:56:05,729 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649042345] [2022-02-15 11:56:05,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:05,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 11:56:05,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:05,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 11:56:05,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 11:56:05,730 INFO L87 Difference]: Start difference. First operand 670 states and 1613 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:05,746 INFO L93 Difference]: Finished difference Result 712 states and 1721 transitions. [2022-02-15 11:56:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 11:56:05,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:05,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:05,749 INFO L225 Difference]: With dead ends: 712 [2022-02-15 11:56:05,749 INFO L226 Difference]: Without dead ends: 712 [2022-02-15 11:56:05,749 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 [2022-02-15 11:56:05,750 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:05,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 182 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:56:05,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-02-15 11:56:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2022-02-15 11:56:05,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 2.420534458509142) internal successors, (1721), 711 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1721 transitions. [2022-02-15 11:56:05,763 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1721 transitions. Word has length 115 [2022-02-15 11:56:05,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:05,764 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 1721 transitions. [2022-02-15 11:56:05,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:05,764 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1721 transitions. [2022-02-15 11:56:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:05,765 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:05,765 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:05,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 11:56:05,766 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:05,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:05,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1372661662, now seen corresponding path program 2 times [2022-02-15 11:56:05,766 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:05,766 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666417846] [2022-02-15 11:56:05,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:05,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:06,243 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:06,243 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666417846] [2022-02-15 11:56:06,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666417846] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:06,244 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:06,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:06,244 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841700220] [2022-02-15 11:56:06,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:06,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:06,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:06,247 INFO L87 Difference]: Start difference. First operand 712 states and 1721 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:06,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:06,551 INFO L93 Difference]: Finished difference Result 1064 states and 2599 transitions. [2022-02-15 11:56:06,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:06,552 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:06,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:06,558 INFO L225 Difference]: With dead ends: 1064 [2022-02-15 11:56:06,558 INFO L226 Difference]: Without dead ends: 1013 [2022-02-15 11:56:06,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2022-02-15 11:56:06,562 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 203 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:06,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 1237 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:56:06,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-02-15 11:56:06,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 774. [2022-02-15 11:56:06,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 773 states have (on average 2.4307891332470892) internal successors, (1879), 773 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:06,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1879 transitions. [2022-02-15 11:56:06,577 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1879 transitions. Word has length 115 [2022-02-15 11:56:06,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:06,578 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1879 transitions. [2022-02-15 11:56:06,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:06,578 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1879 transitions. [2022-02-15 11:56:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:06,579 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:06,580 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:06,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 11:56:06,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:06,580 INFO L85 PathProgramCache]: Analyzing trace with hash -480697922, now seen corresponding path program 3 times [2022-02-15 11:56:06,580 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:06,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191166095] [2022-02-15 11:56:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:06,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:07,031 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:07,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191166095] [2022-02-15 11:56:07,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191166095] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:07,032 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:07,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:07,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359289713] [2022-02-15 11:56:07,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:07,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:07,034 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:07,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:07,034 INFO L87 Difference]: Start difference. First operand 774 states and 1879 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:07,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:07,272 INFO L93 Difference]: Finished difference Result 1112 states and 2694 transitions. [2022-02-15 11:56:07,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:07,273 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:07,276 INFO L225 Difference]: With dead ends: 1112 [2022-02-15 11:56:07,276 INFO L226 Difference]: Without dead ends: 1061 [2022-02-15 11:56:07,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-02-15 11:56:07,277 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 193 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:07,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 1269 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:56:07,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-02-15 11:56:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 778. [2022-02-15 11:56:07,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.4375804375804377) internal successors, (1894), 777 states have internal predecessors, (1894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1894 transitions. [2022-02-15 11:56:07,292 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1894 transitions. Word has length 115 [2022-02-15 11:56:07,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:07,292 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1894 transitions. [2022-02-15 11:56:07,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1894 transitions. [2022-02-15 11:56:07,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:07,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:07,296 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:07,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 11:56:07,296 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:07,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1782487108, now seen corresponding path program 4 times [2022-02-15 11:56:07,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:07,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435842100] [2022-02-15 11:56:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:07,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:07,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:07,589 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435842100] [2022-02-15 11:56:07,589 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435842100] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:07,589 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:07,589 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:07,589 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861057953] [2022-02-15 11:56:07,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:07,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:07,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:07,590 INFO L87 Difference]: Start difference. First operand 778 states and 1894 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:07,802 INFO L93 Difference]: Finished difference Result 1013 states and 2475 transitions. [2022-02-15 11:56:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:07,802 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:07,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:07,805 INFO L225 Difference]: With dead ends: 1013 [2022-02-15 11:56:07,805 INFO L226 Difference]: Without dead ends: 950 [2022-02-15 11:56:07,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-02-15 11:56:07,806 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 159 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:07,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 1185 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:56:07,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-02-15 11:56:07,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 778. [2022-02-15 11:56:07,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.4324324324324325) internal successors, (1890), 777 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1890 transitions. [2022-02-15 11:56:07,819 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1890 transitions. Word has length 115 [2022-02-15 11:56:07,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:07,819 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1890 transitions. [2022-02-15 11:56:07,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1890 transitions. [2022-02-15 11:56:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:07,837 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:07,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:07,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 11:56:07,838 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash -867085732, now seen corresponding path program 5 times [2022-02-15 11:56:07,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:07,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219949988] [2022-02-15 11:56:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:07,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:08,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:08,196 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:08,196 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219949988] [2022-02-15 11:56:08,196 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219949988] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:08,196 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:08,196 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:08,196 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726249528] [2022-02-15 11:56:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:08,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:08,197 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:08,197 INFO L87 Difference]: Start difference. First operand 778 states and 1890 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:08,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:08,434 INFO L93 Difference]: Finished difference Result 1113 states and 2715 transitions. [2022-02-15 11:56:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:56:08,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:08,438 INFO L225 Difference]: With dead ends: 1113 [2022-02-15 11:56:08,438 INFO L226 Difference]: Without dead ends: 1062 [2022-02-15 11:56:08,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-02-15 11:56:08,440 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 198 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:08,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 1150 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:56:08,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-02-15 11:56:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 823. [2022-02-15 11:56:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 2.427007299270073) internal successors, (1995), 822 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1995 transitions. [2022-02-15 11:56:08,465 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1995 transitions. Word has length 115 [2022-02-15 11:56:08,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:08,465 INFO L470 AbstractCegarLoop]: Abstraction has 823 states and 1995 transitions. [2022-02-15 11:56:08,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:08,465 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1995 transitions. [2022-02-15 11:56:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:08,467 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:08,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:08,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 11:56:08,467 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:08,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:08,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1012764612, now seen corresponding path program 6 times [2022-02-15 11:56:08,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:08,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271481711] [2022-02-15 11:56:08,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:08,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:08,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:08,804 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271481711] [2022-02-15 11:56:08,804 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271481711] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:08,804 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:08,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:08,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617133609] [2022-02-15 11:56:08,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:08,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:08,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:08,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:08,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:08,806 INFO L87 Difference]: Start difference. First operand 823 states and 1995 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:09,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:09,067 INFO L93 Difference]: Finished difference Result 1235 states and 2985 transitions. [2022-02-15 11:56:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-15 11:56:09,067 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:09,071 INFO L225 Difference]: With dead ends: 1235 [2022-02-15 11:56:09,071 INFO L226 Difference]: Without dead ends: 1184 [2022-02-15 11:56:09,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-02-15 11:56:09,072 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 223 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:09,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 1419 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:56:09,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-02-15 11:56:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 909. [2022-02-15 11:56:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 908 states have (on average 2.4129955947136565) internal successors, (2191), 908 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 2191 transitions. [2022-02-15 11:56:09,096 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 2191 transitions. Word has length 115 [2022-02-15 11:56:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:09,096 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 2191 transitions. [2022-02-15 11:56:09,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 2191 transitions. [2022-02-15 11:56:09,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:09,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:09,098 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:09,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 11:56:09,098 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash 874442110, now seen corresponding path program 7 times [2022-02-15 11:56:09,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:09,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363646223] [2022-02-15 11:56:09,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:09,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:09,386 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:09,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363646223] [2022-02-15 11:56:09,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363646223] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:09,386 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:09,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:09,386 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720165735] [2022-02-15 11:56:09,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:09,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:09,387 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:09,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:09,388 INFO L87 Difference]: Start difference. First operand 909 states and 2191 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:09,610 INFO L93 Difference]: Finished difference Result 1193 states and 2870 transitions. [2022-02-15 11:56:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:09,610 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:09,614 INFO L225 Difference]: With dead ends: 1193 [2022-02-15 11:56:09,614 INFO L226 Difference]: Without dead ends: 1142 [2022-02-15 11:56:09,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2022-02-15 11:56:09,616 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 217 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:09,616 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1219 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:56:09,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2022-02-15 11:56:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 913. [2022-02-15 11:56:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 912 states have (on average 2.418859649122807) internal successors, (2206), 912 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 2206 transitions. [2022-02-15 11:56:09,634 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 2206 transitions. Word has length 115 [2022-02-15 11:56:09,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:09,634 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 2206 transitions. [2022-02-15 11:56:09,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:09,634 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 2206 transitions. [2022-02-15 11:56:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:09,636 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:09,636 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:09,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 11:56:09,636 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:09,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:09,636 INFO L85 PathProgramCache]: Analyzing trace with hash -427347076, now seen corresponding path program 8 times [2022-02-15 11:56:09,637 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:09,637 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823890245] [2022-02-15 11:56:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:09,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:09,900 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:09,900 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823890245] [2022-02-15 11:56:09,900 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823890245] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:09,900 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:09,900 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:09,900 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181678775] [2022-02-15 11:56:09,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:09,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:09,901 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:09,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:09,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:09,901 INFO L87 Difference]: Start difference. First operand 913 states and 2206 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:10,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:10,128 INFO L93 Difference]: Finished difference Result 1094 states and 2651 transitions. [2022-02-15 11:56:10,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:10,129 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:10,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:10,132 INFO L225 Difference]: With dead ends: 1094 [2022-02-15 11:56:10,133 INFO L226 Difference]: Without dead ends: 1031 [2022-02-15 11:56:10,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-02-15 11:56:10,133 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 194 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:10,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1248 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:56:10,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-02-15 11:56:10,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 885. [2022-02-15 11:56:10,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 884 states have (on average 2.408371040723982) internal successors, (2129), 884 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:10,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 2129 transitions. [2022-02-15 11:56:10,147 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 2129 transitions. Word has length 115 [2022-02-15 11:56:10,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:10,148 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 2129 transitions. [2022-02-15 11:56:10,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:10,148 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 2129 transitions. [2022-02-15 11:56:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:10,149 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:10,149 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:10,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 11:56:10,150 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:10,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -2058803320, now seen corresponding path program 9 times [2022-02-15 11:56:10,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:10,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043667466] [2022-02-15 11:56:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:10,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:10,422 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:10,422 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043667466] [2022-02-15 11:56:10,422 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043667466] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:10,422 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:10,422 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:10,423 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476797094] [2022-02-15 11:56:10,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:10,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:10,423 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:10,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:10,423 INFO L87 Difference]: Start difference. First operand 885 states and 2129 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:10,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:10,625 INFO L93 Difference]: Finished difference Result 1171 states and 2834 transitions. [2022-02-15 11:56:10,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:10,626 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:10,629 INFO L225 Difference]: With dead ends: 1171 [2022-02-15 11:56:10,629 INFO L226 Difference]: Without dead ends: 1120 [2022-02-15 11:56:10,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-02-15 11:56:10,630 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 217 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:10,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 1013 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:56:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-02-15 11:56:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 901. [2022-02-15 11:56:10,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 900 states have (on average 2.4144444444444444) internal successors, (2173), 900 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 2173 transitions. [2022-02-15 11:56:10,645 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 2173 transitions. Word has length 115 [2022-02-15 11:56:10,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:10,645 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 2173 transitions. [2022-02-15 11:56:10,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:10,645 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 2173 transitions. [2022-02-15 11:56:10,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:10,647 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:10,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:10,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 11:56:10,647 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:10,647 INFO L85 PathProgramCache]: Analyzing trace with hash 382804392, now seen corresponding path program 10 times [2022-02-15 11:56:10,647 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:10,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203320502] [2022-02-15 11:56:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:10,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:10,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:10,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203320502] [2022-02-15 11:56:10,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203320502] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:10,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:10,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:10,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135020779] [2022-02-15 11:56:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:10,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:10,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:10,924 INFO L87 Difference]: Start difference. First operand 901 states and 2173 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:11,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:11,223 INFO L93 Difference]: Finished difference Result 1189 states and 2859 transitions. [2022-02-15 11:56:11,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:11,224 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:11,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:11,228 INFO L225 Difference]: With dead ends: 1189 [2022-02-15 11:56:11,228 INFO L226 Difference]: Without dead ends: 1138 [2022-02-15 11:56:11,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-02-15 11:56:11,228 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 188 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:11,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1390 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:56:11,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2022-02-15 11:56:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 905. [2022-02-15 11:56:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 904 states have (on average 2.420353982300885) internal successors, (2188), 904 states have internal predecessors, (2188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:11,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 2188 transitions. [2022-02-15 11:56:11,247 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 2188 transitions. Word has length 115 [2022-02-15 11:56:11,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:11,247 INFO L470 AbstractCegarLoop]: Abstraction has 905 states and 2188 transitions. [2022-02-15 11:56:11,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:11,247 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 2188 transitions. [2022-02-15 11:56:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:11,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:11,249 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:11,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 11:56:11,249 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:11,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash -918984794, now seen corresponding path program 11 times [2022-02-15 11:56:11,250 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:11,250 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987846025] [2022-02-15 11:56:11,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:11,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:11,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:11,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987846025] [2022-02-15 11:56:11,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987846025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:11,544 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:11,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:11,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966912722] [2022-02-15 11:56:11,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:11,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:11,545 INFO L87 Difference]: Start difference. First operand 905 states and 2188 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:11,755 INFO L93 Difference]: Finished difference Result 1090 states and 2640 transitions. [2022-02-15 11:56:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-15 11:56:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:11,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:11,759 INFO L225 Difference]: With dead ends: 1090 [2022-02-15 11:56:11,759 INFO L226 Difference]: Without dead ends: 1027 [2022-02-15 11:56:11,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-02-15 11:56:11,760 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 170 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:11,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1223 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:56:11,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2022-02-15 11:56:11,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 897. [2022-02-15 11:56:11,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 896 states have (on average 2.4129464285714284) internal successors, (2162), 896 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:11,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 2162 transitions. [2022-02-15 11:56:11,790 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 2162 transitions. Word has length 115 [2022-02-15 11:56:11,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:11,791 INFO L470 AbstractCegarLoop]: Abstraction has 897 states and 2162 transitions. [2022-02-15 11:56:11,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:11,791 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 2162 transitions. [2022-02-15 11:56:11,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-02-15 11:56:11,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:11,793 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, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:11,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 11:56:11,793 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:11,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash -3583418, now seen corresponding path program 12 times [2022-02-15 11:56:11,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:11,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697559679] [2022-02-15 11:56:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:11,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-15 11:56:12,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:12,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697559679] [2022-02-15 11:56:12,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697559679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:12,108 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:12,108 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 11:56:12,108 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651927357] [2022-02-15 11:56:12,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:12,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 11:56:12,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:12,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 11:56:12,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-02-15 11:56:12,109 INFO L87 Difference]: Start difference. First operand 897 states and 2162 transitions. Second operand has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:12,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:12,372 INFO L93 Difference]: Finished difference Result 1201 states and 2904 transitions. [2022-02-15 11:56:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-15 11:56:12,372 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-02-15 11:56:12,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:12,376 INFO L225 Difference]: With dead ends: 1201 [2022-02-15 11:56:12,376 INFO L226 Difference]: Without dead ends: 1150 [2022-02-15 11:56:12,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2022-02-15 11:56:12,377 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 202 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:12,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 1037 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-15 11:56:12,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-02-15 11:56:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 869. [2022-02-15 11:56:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 868 states have (on average 2.402073732718894) internal successors, (2085), 868 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:12,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 2085 transitions. [2022-02-15 11:56:12,393 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 2085 transitions. Word has length 115 [2022-02-15 11:56:12,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:12,393 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 2085 transitions. [2022-02-15 11:56:12,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.1875) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:12,394 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 2085 transitions. [2022-02-15 11:56:12,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-02-15 11:56:12,395 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:12,395 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:12,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 11:56:12,396 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:12,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:12,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1414840224, now seen corresponding path program 1 times [2022-02-15 11:56:12,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:12,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014073645] [2022-02-15 11:56:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:12,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:12,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-15 11:56:12,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:12,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014073645] [2022-02-15 11:56:12,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014073645] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 11:56:12,434 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 11:56:12,434 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-15 11:56:12,435 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159103872] [2022-02-15 11:56:12,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 11:56:12,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-15 11:56:12,435 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-15 11:56:12,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:56:12,435 INFO L87 Difference]: Start difference. First operand 869 states and 2085 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:12,457 INFO L93 Difference]: Finished difference Result 1737 states and 4340 transitions. [2022-02-15 11:56:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-15 11:56:12,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 120 [2022-02-15 11:56:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:12,462 INFO L225 Difference]: With dead ends: 1737 [2022-02-15 11:56:12,463 INFO L226 Difference]: Without dead ends: 1520 [2022-02-15 11:56:12,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-02-15 11:56:12,465 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 117 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:12,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 272 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 11:56:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-02-15 11:56:12,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1212. [2022-02-15 11:56:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1211 states have (on average 2.564822460776218) internal successors, (3106), 1211 states have internal predecessors, (3106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 3106 transitions. [2022-02-15 11:56:12,489 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 3106 transitions. Word has length 120 [2022-02-15 11:56:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:12,489 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 3106 transitions. [2022-02-15 11:56:12,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 3106 transitions. [2022-02-15 11:56:12,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-02-15 11:56:12,492 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:12,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:12,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 11:56:12,492 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:12,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2096069143, now seen corresponding path program 1 times [2022-02-15 11:56:12,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:12,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635490762] [2022-02-15 11:56:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:12,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:12,560 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:12,560 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635490762] [2022-02-15 11:56:12,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635490762] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:56:12,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780257705] [2022-02-15 11:56:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:12,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:56:12,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:56:12,576 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) [2022-02-15 11:56:12,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-15 11:56:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:12,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-15 11:56:12,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:56:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:13,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:56:13,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:13,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780257705] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:56:13,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:56:13,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-02-15 11:56:13,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145088237] [2022-02-15 11:56:13,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:56:13,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-15 11:56:13,381 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-15 11:56:13,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-02-15 11:56:13,382 INFO L87 Difference]: Start difference. First operand 1212 states and 3106 transitions. Second operand has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:13,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:13,517 INFO L93 Difference]: Finished difference Result 1683 states and 4216 transitions. [2022-02-15 11:56:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-15 11:56:13,518 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2022-02-15 11:56:13,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:13,522 INFO L225 Difference]: With dead ends: 1683 [2022-02-15 11:56:13,522 INFO L226 Difference]: Without dead ends: 1224 [2022-02-15 11:56:13,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-02-15 11:56:13,523 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 739 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:13,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 741 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 11:56:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2022-02-15 11:56:13,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1219. [2022-02-15 11:56:13,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 1218 states have (on average 2.5558292282430215) internal successors, (3113), 1218 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 3113 transitions. [2022-02-15 11:56:13,547 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 3113 transitions. Word has length 121 [2022-02-15 11:56:13,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:13,547 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 3113 transitions. [2022-02-15 11:56:13,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:13,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 3113 transitions. [2022-02-15 11:56:13,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-02-15 11:56:13,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:13,550 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:13,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-02-15 11:56:13,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-15 11:56:13,760 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1461811388, now seen corresponding path program 2 times [2022-02-15 11:56:13,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:13,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886074178] [2022-02-15 11:56:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:13,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:13,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:14,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:14,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886074178] [2022-02-15 11:56:14,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886074178] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:56:14,275 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018097987] [2022-02-15 11:56:14,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:56:14,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:56:14,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:56:14,276 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) [2022-02-15 11:56:14,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-15 11:56:14,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 11:56:14,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:56:14,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 39 conjunts are in the unsatisfiable core [2022-02-15 11:56:14,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:56:15,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:56:15,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:56:15,345 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 [2022-02-15 11:56:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:15,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:56:15,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:56:15,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-02-15 11:56:15,689 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 24 treesize of output 18 [2022-02-15 11:56:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:16,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018097987] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:56:16,895 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:56:16,895 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 21] total 56 [2022-02-15 11:56:16,895 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561292637] [2022-02-15 11:56:16,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:56:16,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-02-15 11:56:16,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:16,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-02-15 11:56:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=2748, Unknown=2, NotChecked=0, Total=3080 [2022-02-15 11:56:16,908 INFO L87 Difference]: Start difference. First operand 1219 states and 3113 transitions. Second operand has 56 states, 56 states have (on average 5.321428571428571) internal successors, (298), 56 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:19,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:19,521 INFO L93 Difference]: Finished difference Result 5301 states and 13894 transitions. [2022-02-15 11:56:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 11:56:19,521 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.321428571428571) internal successors, (298), 56 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-02-15 11:56:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:19,548 INFO L225 Difference]: With dead ends: 5301 [2022-02-15 11:56:19,548 INFO L226 Difference]: Without dead ends: 4293 [2022-02-15 11:56:19,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1732 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1305, Invalid=6883, Unknown=2, NotChecked=0, Total=8190 [2022-02-15 11:56:19,553 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 2480 mSDsluCounter, 4488 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2480 SdHoareTripleChecker+Valid, 4418 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:19,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2480 Valid, 4418 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1461 Invalid, 0 Unknown, 86 Unchecked, 0.7s Time] [2022-02-15 11:56:19,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2022-02-15 11:56:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 2081. [2022-02-15 11:56:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2081 states, 2080 states have (on average 2.5610576923076924) internal successors, (5327), 2080 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:19,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 5327 transitions. [2022-02-15 11:56:19,640 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 5327 transitions. Word has length 128 [2022-02-15 11:56:19,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:19,640 INFO L470 AbstractCegarLoop]: Abstraction has 2081 states and 5327 transitions. [2022-02-15 11:56:19,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.321428571428571) internal successors, (298), 56 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:19,640 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 5327 transitions. [2022-02-15 11:56:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 11:56:19,644 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:19,645 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:19,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-15 11:56:19,861 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,SelfDestructingSolverStorable16 [2022-02-15 11:56:19,861 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2037793132, now seen corresponding path program 1 times [2022-02-15 11:56:19,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:19,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535250299] [2022-02-15 11:56:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:19,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:21,338 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:21,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:21,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535250299] [2022-02-15 11:56:21,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535250299] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:56:21,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839033023] [2022-02-15 11:56:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:21,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:56:21,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:56:21,340 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) [2022-02-15 11:56:21,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-15 11:56:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:21,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-15 11:56:21,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:56:23,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:56:23,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:56:23,607 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 11:56:23,607 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 23 treesize of output 10 [2022-02-15 11:56:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:24,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:56:25,542 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:56:25,542 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 87 treesize of output 87 [2022-02-15 11:56:25,547 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 66 treesize of output 60 [2022-02-15 11:56:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:37,998 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839033023] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:56:37,998 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:56:37,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-02-15 11:56:37,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587482160] [2022-02-15 11:56:37,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:56:37,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-15 11:56:37,999 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:56:37,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-15 11:56:38,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=9494, Unknown=17, NotChecked=0, Total=10302 [2022-02-15 11:56:38,001 INFO L87 Difference]: Start difference. First operand 2081 states and 5327 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:56:53,047 INFO L93 Difference]: Finished difference Result 4247 states and 10764 transitions. [2022-02-15 11:56:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-15 11:56:53,047 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 11:56:53,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:56:53,055 INFO L225 Difference]: With dead ends: 4247 [2022-02-15 11:56:53,072 INFO L226 Difference]: Without dead ends: 4085 [2022-02-15 11:56:53,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 211 SyntacticMatches, 11 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10106 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=2791, Invalid=27961, Unknown=48, NotChecked=0, Total=30800 [2022-02-15 11:56:53,079 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 2288 mSDsluCounter, 11108 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 10416 SdHoareTripleChecker+Invalid, 6345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3327 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 11:56:53,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 10416 Invalid, 6345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2857 Invalid, 0 Unknown, 3327 Unchecked, 1.6s Time] [2022-02-15 11:56:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4085 states. [2022-02-15 11:56:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4085 to 2296. [2022-02-15 11:56:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2295 states have (on average 2.5838779956427014) internal successors, (5930), 2295 states have internal predecessors, (5930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 5930 transitions. [2022-02-15 11:56:53,124 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 5930 transitions. Word has length 133 [2022-02-15 11:56:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:56:53,124 INFO L470 AbstractCegarLoop]: Abstraction has 2296 states and 5930 transitions. [2022-02-15 11:56:53,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:56:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 5930 transitions. [2022-02-15 11:56:53,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 11:56:53,129 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:56:53,129 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:56:53,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-15 11:56:53,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-15 11:56:53,362 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:56:53,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:56:53,363 INFO L85 PathProgramCache]: Analyzing trace with hash 403814580, now seen corresponding path program 2 times [2022-02-15 11:56:53,363 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:56:53,363 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928761413] [2022-02-15 11:56:53,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:56:53,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:56:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:56:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:54,749 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:56:54,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928761413] [2022-02-15 11:56:54,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928761413] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:56:54,749 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514006640] [2022-02-15 11:56:54,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 11:56:54,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:56:54,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:56:54,764 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) [2022-02-15 11:56:54,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-15 11:56:55,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 11:56:55,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:56:55,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-15 11:56:55,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:56:56,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:56:56,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:56:56,862 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 11:56:56,862 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 24 treesize of output 10 [2022-02-15 11:56:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:56:57,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:56:58,750 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:56:58,751 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 61 treesize of output 61 [2022-02-15 11:56:58,755 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 40 treesize of output 34 [2022-02-15 11:57:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:57:00,977 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514006640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:57:00,977 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:57:00,977 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 101 [2022-02-15 11:57:00,977 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218195934] [2022-02-15 11:57:00,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:57:00,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-15 11:57:00,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:57:00,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-15 11:57:00,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=9302, Unknown=14, NotChecked=0, Total=10100 [2022-02-15 11:57:00,979 INFO L87 Difference]: Start difference. First operand 2296 states and 5930 transitions. Second operand has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:57:10,183 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (.cse4 (<= c_~s~0 c_~N~0)) (.cse0 (not (<= 0 c_~q_back~0))) (.cse1 (not (< c_~q_back~0 c_~n~0))) (.cse3 (= (+ c_~C~0 c_~y~0 (* (- 4294967296) (div (+ c_~C~0 c_~y~0) 4294967296))) (+ (* (div c_~x~0 4294967296) (- 4294967296)) c_~x~0))) (.cse6 (< c_~q_back~0 0)) (.cse7 (<= c_~n~0 c_~q_back~0)) (.cse2 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0))) (and (<= c_~N~0 c_~s~0) (<= c_~y~0 c_~x~0) (= c_~s~0 1) (or .cse0 .cse1 .cse2 (and (= c_~s~0 c_~N~0) .cse3)) .cse4 (= c_~C~0 c_~x~0) (<= c_~N~0 1) (or (and (= c_~N~0 .cse5) .cse3) .cse6 .cse7 .cse2) (or (and (= (+ c_~s~0 .cse5) c_~N~0) .cse3) .cse6 .cse7 .cse2) (or (and .cse4 (<= |c_thread1Thread1of1ForFork0_~i~0#1| c_~s~0)) (<= (* c_~n~0 4) (+ c_~q~0.offset 3 (* 4 c_~q_back~0)))) (= (+ c_~y~0 (* (- 1) c_~C~0)) 0) (< 0 c_~N~0) (< 0 c_~n~0) (or .cse0 .cse1 (and (= c_~N~0 (+ c_~s~0 |c_thread2Thread1of1ForFork1_~j~0#1|)) .cse3) .cse2) (= c_~q~0.offset 0) (<= 1 c_~q_back~0) (or (and .cse3 (forall ((v_ArrVal_287 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) .cse6 .cse7 .cse2) (<= c_~n~0 2) (<= c_~x~0 c_~y~0))) is different from false [2022-02-15 11:57:10,395 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_~s~0 c_~N~0)) (.cse6 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (.cse5 (<= c_~s~0 c_~N~0)) (.cse1 (not (<= 0 c_~q_back~0))) (.cse2 (not (< c_~q_back~0 c_~n~0))) (.cse4 (= (+ c_~C~0 c_~y~0 (* (- 4294967296) (div (+ c_~C~0 c_~y~0) 4294967296))) (+ (* (div c_~x~0 4294967296) (- 4294967296)) c_~x~0))) (.cse7 (< c_~q_back~0 0)) (.cse8 (<= c_~n~0 c_~q_back~0)) (.cse3 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0))) (and (<= c_~N~0 c_~s~0) (<= c_~y~0 c_~x~0) (or (and .cse0 (= (+ c_~C~0 c_~x~0 (* (div (+ c_~C~0 c_~x~0) 4294967296) (- 4294967296))) (+ c_~y~0 (* (div c_~y~0 4294967296) (- 4294967296))))) (not (= |c_thread2Thread1of1ForFork1_~j~0#1| 0))) (= c_~s~0 1) (or .cse1 .cse2 .cse3 (and .cse0 .cse4)) .cse5 (= c_~C~0 c_~x~0) (<= c_~N~0 1) (or (and (= c_~N~0 .cse6) .cse4) .cse7 .cse8 .cse3) (or (and (= (+ c_~s~0 .cse6) c_~N~0) .cse4) .cse7 .cse8 .cse3) (or (and .cse5 (<= |c_thread1Thread1of1ForFork0_~i~0#1| c_~s~0)) (<= (* c_~n~0 4) (+ c_~q~0.offset 3 (* 4 c_~q_back~0)))) (= (+ c_~y~0 (* (- 1) c_~C~0)) 0) (< 0 c_~N~0) (< 0 c_~n~0) (or .cse1 .cse2 (and (= c_~N~0 (+ c_~s~0 |c_thread2Thread1of1ForFork1_~j~0#1|)) .cse4) .cse3) (= c_~q~0.offset 0) (<= 1 c_~q_back~0) (or (and .cse4 (forall ((v_ArrVal_287 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_287) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) .cse7 .cse8 .cse3) (<= c_~n~0 2) (<= c_~x~0 c_~y~0))) is different from false [2022-02-15 11:57:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:57:16,781 INFO L93 Difference]: Finished difference Result 4947 states and 12555 transitions. [2022-02-15 11:57:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-15 11:57:16,782 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 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 133 [2022-02-15 11:57:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:57:16,790 INFO L225 Difference]: With dead ends: 4947 [2022-02-15 11:57:16,791 INFO L226 Difference]: Without dead ends: 4815 [2022-02-15 11:57:16,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 211 SyntacticMatches, 8 SemanticMatches, 199 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 12742 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=3533, Invalid=35819, Unknown=58, NotChecked=790, Total=40200 [2022-02-15 11:57:16,793 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 3342 mSDsluCounter, 10628 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3342 SdHoareTripleChecker+Valid, 9962 SdHoareTripleChecker+Invalid, 6429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2294 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-15 11:57:16,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3342 Valid, 9962 Invalid, 6429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 3861 Invalid, 0 Unknown, 2294 Unchecked, 3.4s Time] [2022-02-15 11:57:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4815 states. [2022-02-15 11:57:16,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4815 to 2440. [2022-02-15 11:57:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2439 states have (on average 2.5863058630586306) internal successors, (6308), 2439 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:57:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 6308 transitions. [2022-02-15 11:57:16,844 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 6308 transitions. Word has length 133 [2022-02-15 11:57:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:57:16,845 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 6308 transitions. [2022-02-15 11:57:16,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.2475247524752477) internal successors, (328), 101 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:57:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 6308 transitions. [2022-02-15 11:57:16,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 11:57:16,849 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:57:16,849 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:57:16,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-15 11:57:17,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:57:17,066 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:57:17,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:57:17,066 INFO L85 PathProgramCache]: Analyzing trace with hash -897974606, now seen corresponding path program 3 times [2022-02-15 11:57:17,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:57:17,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886808863] [2022-02-15 11:57:17,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:57:17,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:57:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:57:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:57:18,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:57:18,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886808863] [2022-02-15 11:57:18,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886808863] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:57:18,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175729712] [2022-02-15 11:57:18,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 11:57:18,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:57:18,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:57:18,434 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) [2022-02-15 11:57:18,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-15 11:57:18,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-15 11:57:18,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:57:18,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-15 11:57:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:57:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:57:20,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:57:20,636 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 11:57:20,636 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 23 treesize of output 10 [2022-02-15 11:57:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:57:21,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:57:22,658 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:57:22,659 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 87 treesize of output 87 [2022-02-15 11:57:22,661 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 66 treesize of output 60 [2022-02-15 11:57:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:57:35,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175729712] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:57:35,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:57:35,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-02-15 11:57:35,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643040519] [2022-02-15 11:57:35,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:57:35,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 11:57:35,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:57:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 11:57:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=774, Invalid=9714, Unknown=18, NotChecked=0, Total=10506 [2022-02-15 11:57:35,515 INFO L87 Difference]: Start difference. First operand 2440 states and 6308 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:57:48,921 WARN L228 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 110 DAG size of output: 99 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 11:58:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:58:07,802 INFO L93 Difference]: Finished difference Result 4765 states and 11965 transitions. [2022-02-15 11:58:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-15 11:58:07,803 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 11:58:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:58:07,810 INFO L225 Difference]: With dead ends: 4765 [2022-02-15 11:58:07,811 INFO L226 Difference]: Without dead ends: 4455 [2022-02-15 11:58:07,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 221 SyntacticMatches, 13 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13475 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=3056, Invalid=37062, Unknown=82, NotChecked=0, Total=40200 [2022-02-15 11:58:07,813 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2389 mSDsluCounter, 10957 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 10455 SdHoareTripleChecker+Invalid, 5462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2688 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-02-15 11:58:07,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2389 Valid, 10455 Invalid, 5462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2604 Invalid, 0 Unknown, 2688 Unchecked, 3.3s Time] [2022-02-15 11:58:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4455 states. [2022-02-15 11:58:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4455 to 2580. [2022-02-15 11:58:07,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2579 states have (on average 2.5785188057386583) internal successors, (6650), 2579 states have internal predecessors, (6650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:58:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 6650 transitions. [2022-02-15 11:58:07,859 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 6650 transitions. Word has length 133 [2022-02-15 11:58:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:58:07,859 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 6650 transitions. [2022-02-15 11:58:07,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:58:07,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 6650 transitions. [2022-02-15 11:58:07,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 11:58:07,863 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:58:07,863 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:58:07,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-02-15 11:58:08,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:58:08,080 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:58:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:58:08,080 INFO L85 PathProgramCache]: Analyzing trace with hash 17426770, now seen corresponding path program 4 times [2022-02-15 11:58:08,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:58:08,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133559948] [2022-02-15 11:58:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:58:08,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:58:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:58:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:58:09,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:58:09,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133559948] [2022-02-15 11:58:09,599 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133559948] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:58:09,599 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875580211] [2022-02-15 11:58:09,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 11:58:09,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:58:09,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:58:09,628 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) [2022-02-15 11:58:09,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-15 11:58:09,728 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 11:58:09,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:58:09,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-15 11:58:09,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:58:11,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:58:11,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:58:11,885 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 11:58:11,886 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 23 treesize of output 10 [2022-02-15 11:58:12,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:58:12,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:58:13,814 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:58:13,814 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 87 treesize of output 87 [2022-02-15 11:58:13,820 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 66 treesize of output 60 [2022-02-15 11:58:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:58:28,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875580211] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:58:28,938 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:58:28,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-02-15 11:58:28,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664747030] [2022-02-15 11:58:28,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:58:28,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 11:58:28,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:58:28,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 11:58:28,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=775, Invalid=9717, Unknown=14, NotChecked=0, Total=10506 [2022-02-15 11:58:28,940 INFO L87 Difference]: Start difference. First operand 2580 states and 6650 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:58:39,816 WARN L228 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 86 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 11:59:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:59:03,205 INFO L93 Difference]: Finished difference Result 4595 states and 11567 transitions. [2022-02-15 11:59:03,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-02-15 11:59:03,206 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 11:59:03,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:59:03,213 INFO L225 Difference]: With dead ends: 4595 [2022-02-15 11:59:03,213 INFO L226 Difference]: Without dead ends: 3859 [2022-02-15 11:59:03,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 220 SyntacticMatches, 19 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16188 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=3840, Invalid=42974, Unknown=58, NotChecked=0, Total=46872 [2022-02-15 11:59:03,216 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 2771 mSDsluCounter, 12205 mSDsCounter, 0 mSdLazyCounter, 2968 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2771 SdHoareTripleChecker+Valid, 11527 SdHoareTripleChecker+Invalid, 6876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3706 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 11:59:03,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2771 Valid, 11527 Invalid, 6876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2968 Invalid, 0 Unknown, 3706 Unchecked, 1.9s Time] [2022-02-15 11:59:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2022-02-15 11:59:03,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 2387. [2022-02-15 11:59:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2387 states, 2386 states have (on average 2.564124056999162) internal successors, (6118), 2386 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:59:03,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2387 states to 2387 states and 6118 transitions. [2022-02-15 11:59:03,258 INFO L78 Accepts]: Start accepts. Automaton has 2387 states and 6118 transitions. Word has length 133 [2022-02-15 11:59:03,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:59:03,258 INFO L470 AbstractCegarLoop]: Abstraction has 2387 states and 6118 transitions. [2022-02-15 11:59:03,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:59:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2387 states and 6118 transitions. [2022-02-15 11:59:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 11:59:03,263 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:59:03,263 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:59:03,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-15 11:59:03,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:59:03,480 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:59:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:59:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1945316896, now seen corresponding path program 5 times [2022-02-15 11:59:03,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:59:03,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366351252] [2022-02-15 11:59:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:59:03,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:59:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:59:04,965 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:59:04,965 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:59:04,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366351252] [2022-02-15 11:59:04,965 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366351252] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:59:04,965 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143769999] [2022-02-15 11:59:04,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 11:59:04,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:59:04,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:59:04,968 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) [2022-02-15 11:59:04,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-15 11:59:05,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 11:59:05,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:59:05,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-15 11:59:05,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:59:05,188 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 [2022-02-15 11:59:05,473 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 11:59:05,473 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 [2022-02-15 11:59:06,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 11:59:06,563 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 11:59:06,564 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 24 treesize of output 10 [2022-02-15 11:59:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:59:07,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:59:08,337 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:59:08,337 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 116 treesize of output 108 [2022-02-15 11:59:08,341 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 80 treesize of output 68 [2022-02-15 11:59:10,466 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 [2022-02-15 11:59:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 11:59:10,627 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143769999] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:59:10,627 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:59:10,627 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 30, 29] total 89 [2022-02-15 11:59:10,627 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378418632] [2022-02-15 11:59:10,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:59:10,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-02-15 11:59:10,628 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:59:10,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-02-15 11:59:10,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=637, Invalid=7190, Unknown=5, NotChecked=0, Total=7832 [2022-02-15 11:59:10,629 INFO L87 Difference]: Start difference. First operand 2387 states and 6118 transitions. Second operand has 89 states, 89 states have (on average 3.808988764044944) internal successors, (339), 89 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:59:23,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 11:59:23,845 INFO L93 Difference]: Finished difference Result 4255 states and 10658 transitions. [2022-02-15 11:59:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-02-15 11:59:23,846 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.808988764044944) internal successors, (339), 89 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 11:59:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 11:59:23,861 INFO L225 Difference]: With dead ends: 4255 [2022-02-15 11:59:23,861 INFO L226 Difference]: Without dead ends: 3739 [2022-02-15 11:59:23,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 222 SyntacticMatches, 4 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9555 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=2178, Invalid=26545, Unknown=7, NotChecked=0, Total=28730 [2022-02-15 11:59:23,864 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2158 mSDsluCounter, 7078 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 6782 SdHoareTripleChecker+Invalid, 4021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1165 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 11:59:23,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 6782 Invalid, 4021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2679 Invalid, 0 Unknown, 1165 Unchecked, 2.0s Time] [2022-02-15 11:59:23,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3739 states. [2022-02-15 11:59:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3739 to 2557. [2022-02-15 11:59:23,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2557 states, 2556 states have (on average 2.576682316118936) internal successors, (6586), 2556 states have internal predecessors, (6586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:59:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2557 states to 2557 states and 6586 transitions. [2022-02-15 11:59:23,900 INFO L78 Accepts]: Start accepts. Automaton has 2557 states and 6586 transitions. Word has length 133 [2022-02-15 11:59:23,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 11:59:23,900 INFO L470 AbstractCegarLoop]: Abstraction has 2557 states and 6586 transitions. [2022-02-15 11:59:23,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.808988764044944) internal successors, (339), 89 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 11:59:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2557 states and 6586 transitions. [2022-02-15 11:59:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 11:59:23,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 11:59:23,904 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 11:59:23,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-15 11:59:24,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:59:24,120 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 11:59:24,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 11:59:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1067014600, now seen corresponding path program 6 times [2022-02-15 11:59:24,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 11:59:24,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004794413] [2022-02-15 11:59:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 11:59:24,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 11:59:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 11:59:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:59:25,615 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 11:59:25,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004794413] [2022-02-15 11:59:25,615 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004794413] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 11:59:25,615 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595091493] [2022-02-15 11:59:25,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 11:59:25,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 11:59:25,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 11:59:25,616 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) [2022-02-15 11:59:25,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-15 11:59:25,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 11:59:25,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 11:59:25,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 71 conjunts are in the unsatisfiable core [2022-02-15 11:59:25,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 11:59:27,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 11:59:27,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-02-15 11:59:28,202 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 11:59:28,202 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 24 treesize of output 10 [2022-02-15 11:59:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:59:28,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 11:59:29,995 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 11:59:29,995 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 87 treesize of output 87 [2022-02-15 11:59:30,000 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 66 treesize of output 60 [2022-02-15 11:59:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 11:59:38,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595091493] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 11:59:38,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 11:59:38,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 36] total 101 [2022-02-15 11:59:38,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90222064] [2022-02-15 11:59:38,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 11:59:38,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-15 11:59:38,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 11:59:38,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-15 11:59:38,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=9331, Unknown=11, NotChecked=0, Total=10100 [2022-02-15 11:59:38,785 INFO L87 Difference]: Start difference. First operand 2557 states and 6586 transitions. Second operand has 101 states, 101 states have (on average 3.3564356435643563) internal successors, (339), 101 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:00:11,443 WARN L228 SmtUtils]: Spent 24.26s on a formula simplification. DAG size of input: 99 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 12:00:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:00:26,025 INFO L93 Difference]: Finished difference Result 5103 states and 12643 transitions. [2022-02-15 12:00:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-02-15 12:00:26,025 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.3564356435643563) internal successors, (339), 101 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:00:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:00:26,033 INFO L225 Difference]: With dead ends: 5103 [2022-02-15 12:00:26,033 INFO L226 Difference]: Without dead ends: 4893 [2022-02-15 12:00:26,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 220 SyntacticMatches, 24 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15644 ImplicationChecksByTransitivity, 53.4s TimeCoverageRelationStatistics Valid=3669, Invalid=38534, Unknown=27, NotChecked=0, Total=42230 [2022-02-15 12:00:26,035 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 3356 mSDsluCounter, 10307 mSDsCounter, 0 mSdLazyCounter, 4062 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 9679 SdHoareTripleChecker+Invalid, 7288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 4062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2941 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-02-15 12:00:26,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3356 Valid, 9679 Invalid, 7288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 4062 Invalid, 0 Unknown, 2941 Unchecked, 2.9s Time] [2022-02-15 12:00:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2022-02-15 12:00:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 2805. [2022-02-15 12:00:26,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 2804 states have (on average 2.567047075606277) internal successors, (7198), 2804 states have internal predecessors, (7198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:00:26,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 7198 transitions. [2022-02-15 12:00:26,129 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 7198 transitions. Word has length 133 [2022-02-15 12:00:26,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:00:26,129 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 7198 transitions. [2022-02-15 12:00:26,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.3564356435643563) internal successors, (339), 101 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:00:26,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 7198 transitions. [2022-02-15 12:00:26,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:00:26,133 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:00:26,133 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:00:26,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-15 12:00:26,350 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,SelfDestructingSolverStorable22 [2022-02-15 12:00:26,350 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:00:26,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:00:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1926163510, now seen corresponding path program 7 times [2022-02-15 12:00:26,350 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:00:26,350 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780124475] [2022-02-15 12:00:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:00:26,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:00:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:00:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:00:27,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:00:27,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780124475] [2022-02-15 12:00:27,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780124475] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:00:27,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601590160] [2022-02-15 12:00:27,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:00:27,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:00:27,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:00:27,694 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) [2022-02-15 12:00:27,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-15 12:00:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:00:27,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-15 12:00:27,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:00:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:00:29,487 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:00:29,873 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 12:00:29,874 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 23 treesize of output 10 [2022-02-15 12:00:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:00:30,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:00:31,801 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:00:31,802 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 87 treesize of output 87 [2022-02-15 12:00:31,806 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 66 treesize of output 60 [2022-02-15 12:00:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:00:43,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601590160] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:00:43,127 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:00:43,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-02-15 12:00:43,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922652267] [2022-02-15 12:00:43,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:00:43,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 12:00:43,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:00:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 12:00:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=9727, Unknown=16, NotChecked=0, Total=10506 [2022-02-15 12:00:43,130 INFO L87 Difference]: Start difference. First operand 2805 states and 7198 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:00:54,680 WARN L228 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 94 DAG size of output: 88 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 12:01:00,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:01:00,782 INFO L93 Difference]: Finished difference Result 4175 states and 10495 transitions. [2022-02-15 12:01:00,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 12:01:00,782 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:01:00,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:01:00,788 INFO L225 Difference]: With dead ends: 4175 [2022-02-15 12:01:00,788 INFO L226 Difference]: Without dead ends: 3933 [2022-02-15 12:01:00,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 231 SyntacticMatches, 8 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9567 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=2515, Invalid=28251, Unknown=34, NotChecked=0, Total=30800 [2022-02-15 12:01:00,794 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2375 mSDsluCounter, 9462 mSDsCounter, 0 mSdLazyCounter, 2439 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 9046 SdHoareTripleChecker+Invalid, 4810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2251 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 12:01:00,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 9046 Invalid, 4810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2439 Invalid, 0 Unknown, 2251 Unchecked, 2.0s Time] [2022-02-15 12:01:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2022-02-15 12:01:00,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 2829. [2022-02-15 12:01:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2829 states, 2828 states have (on average 2.555869872701556) internal successors, (7228), 2828 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:00,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2829 states to 2829 states and 7228 transitions. [2022-02-15 12:01:00,914 INFO L78 Accepts]: Start accepts. Automaton has 2829 states and 7228 transitions. Word has length 133 [2022-02-15 12:01:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:01:00,914 INFO L470 AbstractCegarLoop]: Abstraction has 2829 states and 7228 transitions. [2022-02-15 12:01:00,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2829 states and 7228 transitions. [2022-02-15 12:01:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:01:00,918 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:01:00,918 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:01:00,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-15 12:01:01,148 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,SelfDestructingSolverStorable23 [2022-02-15 12:01:01,148 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:01:01,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:01:01,148 INFO L85 PathProgramCache]: Analyzing trace with hash -36261092, now seen corresponding path program 8 times [2022-02-15 12:01:01,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:01:01,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930324381] [2022-02-15 12:01:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:01:01,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:01:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:01:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:01:02,796 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:01:02,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930324381] [2022-02-15 12:01:02,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930324381] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:01:02,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595766348] [2022-02-15 12:01:02,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:01:02,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:01:02,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:01:02,798 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) [2022-02-15 12:01:02,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-15 12:01:02,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:01:02,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:01:02,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-15 12:01:02,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:01:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:01:04,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:01:04,961 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 12:01:04,961 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 24 treesize of output 10 [2022-02-15 12:01:05,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:01:05,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:01:07,292 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:01:07,293 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 87 treesize of output 87 [2022-02-15 12:01:07,296 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 66 treesize of output 60 [2022-02-15 12:01:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:01:18,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595766348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:01:18,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:01:18,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-02-15 12:01:18,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864867491] [2022-02-15 12:01:18,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:01:18,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 12:01:18,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:01:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 12:01:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=9751, Unknown=10, NotChecked=0, Total=10506 [2022-02-15 12:01:18,082 INFO L87 Difference]: Start difference. First operand 2829 states and 7228 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:29,083 WARN L228 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 107 DAG size of output: 94 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 12:01:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:01:33,116 INFO L93 Difference]: Finished difference Result 4553 states and 11572 transitions. [2022-02-15 12:01:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-15 12:01:33,117 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:01:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:01:33,124 INFO L225 Difference]: With dead ends: 4553 [2022-02-15 12:01:33,124 INFO L226 Difference]: Without dead ends: 4256 [2022-02-15 12:01:33,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 215 SyntacticMatches, 6 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8228 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=2230, Invalid=24487, Unknown=15, NotChecked=0, Total=26732 [2022-02-15 12:01:33,126 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 2143 mSDsluCounter, 10498 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 9785 SdHoareTripleChecker+Invalid, 6100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3091 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:01:33,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2143 Valid, 9785 Invalid, 6100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2880 Invalid, 0 Unknown, 3091 Unchecked, 1.7s Time] [2022-02-15 12:01:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4256 states. [2022-02-15 12:01:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4256 to 2935. [2022-02-15 12:01:33,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2935 states, 2934 states have (on average 2.5565780504430813) internal successors, (7501), 2934 states have internal predecessors, (7501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 7501 transitions. [2022-02-15 12:01:33,178 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 7501 transitions. Word has length 133 [2022-02-15 12:01:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:01:33,179 INFO L470 AbstractCegarLoop]: Abstraction has 2935 states and 7501 transitions. [2022-02-15 12:01:33,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 7501 transitions. [2022-02-15 12:01:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:01:33,183 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:01:33,184 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:01:33,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-15 12:01:33,411 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,SelfDestructingSolverStorable24 [2022-02-15 12:01:33,412 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:01:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:01:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1246374708, now seen corresponding path program 9 times [2022-02-15 12:01:33,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:01:33,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294243233] [2022-02-15 12:01:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:01:33,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:01:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:01:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:01:35,136 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:01:35,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294243233] [2022-02-15 12:01:35,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294243233] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:01:35,136 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682305348] [2022-02-15 12:01:35,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:01:35,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:01:35,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:01:35,137 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) [2022-02-15 12:01:35,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-15 12:01:35,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:01:35,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:01:35,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-15 12:01:35,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:01:36,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:01:36,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:01:36,834 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 12:01:36,835 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 23 treesize of output 10 [2022-02-15 12:01:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:01:37,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:01:38,742 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:01:38,742 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 55 treesize of output 55 [2022-02-15 12:01:38,747 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 34 treesize of output 28 [2022-02-15 12:01:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:01:48,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682305348] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:01:48,526 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:01:48,526 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 29, 28] total 84 [2022-02-15 12:01:48,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22683481] [2022-02-15 12:01:48,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:01:48,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-02-15 12:01:48,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:01:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-02-15 12:01:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=6537, Unknown=12, NotChecked=0, Total=6972 [2022-02-15 12:01:48,529 INFO L87 Difference]: Start difference. First operand 2935 states and 7501 transitions. Second operand has 84 states, 84 states have (on average 3.869047619047619) internal successors, (325), 84 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:01:55,010 INFO L93 Difference]: Finished difference Result 4415 states and 11285 transitions. [2022-02-15 12:01:55,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 12:01:55,010 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.869047619047619) internal successors, (325), 84 states have internal predecessors, (325), 0 states have call successors, (0), 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 133 [2022-02-15 12:01:55,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:01:55,031 INFO L225 Difference]: With dead ends: 4415 [2022-02-15 12:01:55,031 INFO L226 Difference]: Without dead ends: 4241 [2022-02-15 12:01:55,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 233 SyntacticMatches, 9 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5675 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=1418, Invalid=17200, Unknown=14, NotChecked=0, Total=18632 [2022-02-15 12:01:55,043 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 1751 mSDsluCounter, 8452 mSDsCounter, 0 mSdLazyCounter, 2405 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1751 SdHoareTripleChecker+Valid, 8028 SdHoareTripleChecker+Invalid, 4767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 2405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2304 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:01:55,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1751 Valid, 8028 Invalid, 4767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 2405 Invalid, 0 Unknown, 2304 Unchecked, 1.6s Time] [2022-02-15 12:01:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2022-02-15 12:01:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 3017. [2022-02-15 12:01:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 3016 states have (on average 2.562997347480106) internal successors, (7730), 3016 states have internal predecessors, (7730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 7730 transitions. [2022-02-15 12:01:55,117 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 7730 transitions. Word has length 133 [2022-02-15 12:01:55,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:01:55,117 INFO L470 AbstractCegarLoop]: Abstraction has 3017 states and 7730 transitions. [2022-02-15 12:01:55,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.869047619047619) internal successors, (325), 84 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:01:55,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 7730 transitions. [2022-02-15 12:01:55,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:01:55,123 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:01:55,124 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:01:55,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-15 12:01:55,348 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,SelfDestructingSolverStorable25 [2022-02-15 12:01:55,348 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:01:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:01:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -55414478, now seen corresponding path program 10 times [2022-02-15 12:01:55,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:01:55,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564473100] [2022-02-15 12:01:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:01:55,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:01:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:01:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:01:56,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:01:56,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564473100] [2022-02-15 12:01:56,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564473100] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:01:56,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328853122] [2022-02-15 12:01:56,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:01:56,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:01:56,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:01:56,567 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) [2022-02-15 12:01:56,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-15 12:01:56,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:01:56,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:01:56,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 64 conjunts are in the unsatisfiable core [2022-02-15 12:01:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:01:58,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:01:58,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:01:58,774 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 12:01:58,774 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 23 treesize of output 10 [2022-02-15 12:01:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:01:59,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:02:00,428 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:02:00,428 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 87 treesize of output 87 [2022-02-15 12:02:00,431 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 66 treesize of output 60 [2022-02-15 12:02:05,307 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:02:05,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328853122] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:02:05,308 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:02:05,308 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 37] total 102 [2022-02-15 12:02:05,308 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613685321] [2022-02-15 12:02:05,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:02:05,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-15 12:02:05,308 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:02:05,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-15 12:02:05,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=722, Invalid=9570, Unknown=10, NotChecked=0, Total=10302 [2022-02-15 12:02:05,309 INFO L87 Difference]: Start difference. First operand 3017 states and 7730 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:02:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:02:17,459 INFO L93 Difference]: Finished difference Result 4685 states and 11870 transitions. [2022-02-15 12:02:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 12:02:17,460 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:02:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:02:17,467 INFO L225 Difference]: With dead ends: 4685 [2022-02-15 12:02:17,467 INFO L226 Difference]: Without dead ends: 4447 [2022-02-15 12:02:17,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 220 SyntacticMatches, 6 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9332 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=2608, Invalid=27826, Unknown=16, NotChecked=0, Total=30450 [2022-02-15 12:02:17,468 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 2329 mSDsluCounter, 8125 mSDsCounter, 0 mSdLazyCounter, 1970 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 7843 SdHoareTripleChecker+Invalid, 4349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2267 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:02:17,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2329 Valid, 7843 Invalid, 4349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1970 Invalid, 0 Unknown, 2267 Unchecked, 1.4s Time] [2022-02-15 12:02:17,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4447 states. [2022-02-15 12:02:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4447 to 3029. [2022-02-15 12:02:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3029 states, 3028 states have (on average 2.5610964332893) internal successors, (7755), 3028 states have internal predecessors, (7755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:02:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 7755 transitions. [2022-02-15 12:02:17,513 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 7755 transitions. Word has length 133 [2022-02-15 12:02:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:02:17,513 INFO L470 AbstractCegarLoop]: Abstraction has 3029 states and 7755 transitions. [2022-02-15 12:02:17,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:02:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 7755 transitions. [2022-02-15 12:02:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:02:17,517 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:02:17,518 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:02:17,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-02-15 12:02:17,722 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,SelfDestructingSolverStorable26 [2022-02-15 12:02:17,723 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:02:17,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:02:17,724 INFO L85 PathProgramCache]: Analyzing trace with hash 52006686, now seen corresponding path program 11 times [2022-02-15 12:02:17,725 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:02:17,725 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653472916] [2022-02-15 12:02:17,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:02:17,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:02:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:02:19,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:02:19,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:02:19,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653472916] [2022-02-15 12:02:19,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653472916] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:02:19,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999135225] [2022-02-15 12:02:19,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:02:19,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:02:19,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:02:19,717 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) [2022-02-15 12:02:19,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-15 12:02:19,833 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:02:19,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:02:19,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 62 conjunts are in the unsatisfiable core [2022-02-15 12:02:19,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:02:19,893 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 [2022-02-15 12:02:20,221 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 12:02:20,222 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 [2022-02-15 12:02:21,318 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:02:21,627 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 12:02:21,628 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 24 treesize of output 10 [2022-02-15 12:02:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:02:22,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:02:24,530 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:02:24,530 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 80 [2022-02-15 12:02:24,535 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 52 treesize of output 40 [2022-02-15 12:02:26,603 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 [2022-02-15 12:02:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:02:27,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999135225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:02:27,032 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:02:27,032 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 30, 30] total 90 [2022-02-15 12:02:27,032 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261786232] [2022-02-15 12:02:27,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:02:27,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-02-15 12:02:27,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:02:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-02-15 12:02:27,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=7388, Unknown=5, NotChecked=0, Total=8010 [2022-02-15 12:02:27,034 INFO L87 Difference]: Start difference. First operand 3029 states and 7755 transitions. Second operand has 90 states, 90 states have (on average 3.7666666666666666) internal successors, (339), 90 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:02:35,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:02:35,368 INFO L93 Difference]: Finished difference Result 4881 states and 12334 transitions. [2022-02-15 12:02:35,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 12:02:35,368 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.7666666666666666) internal successors, (339), 90 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:02:35,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:02:35,375 INFO L225 Difference]: With dead ends: 4881 [2022-02-15 12:02:35,375 INFO L226 Difference]: Without dead ends: 4372 [2022-02-15 12:02:35,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8028 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1969, Invalid=23143, Unknown=10, NotChecked=0, Total=25122 [2022-02-15 12:02:35,376 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2010 mSDsluCounter, 7879 mSDsCounter, 0 mSdLazyCounter, 2603 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2010 SdHoareTripleChecker+Valid, 7252 SdHoareTripleChecker+Invalid, 5764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3083 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:02:35,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2010 Valid, 7252 Invalid, 5764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2603 Invalid, 0 Unknown, 3083 Unchecked, 1.7s Time] [2022-02-15 12:02:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4372 states. [2022-02-15 12:02:35,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4372 to 3099. [2022-02-15 12:02:35,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 3098 states have (on average 2.565203357004519) internal successors, (7947), 3098 states have internal predecessors, (7947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:02:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 7947 transitions. [2022-02-15 12:02:35,420 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 7947 transitions. Word has length 133 [2022-02-15 12:02:35,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:02:35,420 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 7947 transitions. [2022-02-15 12:02:35,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.7666666666666666) internal successors, (339), 90 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:02:35,420 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 7947 transitions. [2022-02-15 12:02:35,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:02:35,425 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:02:35,425 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:02:35,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-15 12:02:35,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-15 12:02:35,642 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:02:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:02:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash -833138018, now seen corresponding path program 12 times [2022-02-15 12:02:35,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:02:35,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705734064] [2022-02-15 12:02:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:02:35,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:02:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:02:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:02:37,193 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:02:37,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705734064] [2022-02-15 12:02:37,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705734064] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:02:37,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387235126] [2022-02-15 12:02:37,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:02:37,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:02:37,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:02:37,212 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) [2022-02-15 12:02:37,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-15 12:02:37,352 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:02:37,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:02:37,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 76 conjunts are in the unsatisfiable core [2022-02-15 12:02:37,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:02:39,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:02:39,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-02-15 12:02:39,560 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 12:02:39,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-02-15 12:02:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:02:40,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:02:41,256 WARN L838 $PredicateComparison]: unable to prove that (or (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_579 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_579) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0)) is different from false [2022-02-15 12:02:41,385 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_579 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_579) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) is different from false [2022-02-15 12:02:41,397 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod (+ c_~C~0 c_~x~0) 4294967296)) (forall ((v_ArrVal_579 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_579) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0)) is different from false [2022-02-15 12:02:41,412 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:02:41,412 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 55 treesize of output 55 [2022-02-15 12:02:41,416 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 34 treesize of output 28 [2022-02-15 12:02:50,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:02:50,055 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387235126] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:02:50,055 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:02:50,055 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 104 [2022-02-15 12:02:50,055 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127462647] [2022-02-15 12:02:50,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:02:50,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-15 12:02:50,056 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:02:50,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-15 12:02:50,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=9422, Unknown=12, NotChecked=600, Total=10712 [2022-02-15 12:02:50,058 INFO L87 Difference]: Start difference. First operand 3099 states and 7947 transitions. Second operand has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:02:56,328 WARN L838 $PredicateComparison]: unable to prove that (and (= c_~y~0 0) (= |c_thread1Thread1of1ForFork0_#t~post1#1| 0) (or (<= (* c_~n~0 4) (+ c_~q~0.offset 3 (* 4 c_~q_back~0))) (let ((.cse0 (+ (* c_~q_front~0 4) c_~q~0.offset))) (and (<= .cse0 0) (<= 0 c_~q_front~0) (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base)) (= (select (select |c_#memory_int| c_~q~0.base) .cse0) 1)))) (<= 1 c_~N~0) (<= c_~x~0 c_~C~0) (<= c_~C~0 c_~x~0) (or (< (+ |c_thread1Thread1of1ForFork0_#t~post1#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_579 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_579) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)))))) (= c_~q~0.offset 0)) is different from false [2022-02-15 12:02:56,653 WARN L838 $PredicateComparison]: unable to prove that (and (= c_~y~0 0) (<= |c_thread1Thread1of1ForFork0_~i~0#1| 1) (or (<= (* c_~n~0 4) (+ c_~q~0.offset 3 (* 4 c_~q_back~0))) (let ((.cse0 (+ (* c_~q_front~0 4) c_~q~0.offset))) (and (<= .cse0 0) (<= 0 c_~q_front~0) (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base)) (= (select (select |c_#memory_int| c_~q~0.base) .cse0) 1)))) (<= 1 c_~N~0) (<= c_~x~0 c_~C~0) (or (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_579 (Array Int Int))) (= c_~N~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_579) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0)) (<= c_~C~0 c_~x~0) (= c_~q~0.offset 0)) is different from false [2022-02-15 12:03:17,848 WARN L228 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 113 DAG size of output: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-02-15 12:03:28,304 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 12:03:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:03:37,708 INFO L93 Difference]: Finished difference Result 5346 states and 13442 transitions. [2022-02-15 12:03:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 12:03:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:03:37,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:03:37,715 INFO L225 Difference]: With dead ends: 5346 [2022-02-15 12:03:37,715 INFO L226 Difference]: Without dead ends: 4656 [2022-02-15 12:03:37,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 211 SyntacticMatches, 7 SemanticMatches, 198 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12207 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=3077, Invalid=34752, Unknown=21, NotChecked=1950, Total=39800 [2022-02-15 12:03:37,718 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 3561 mSDsluCounter, 10668 mSDsCounter, 0 mSdLazyCounter, 4330 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3561 SdHoareTripleChecker+Valid, 9918 SdHoareTripleChecker+Invalid, 8271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 4330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3550 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-02-15 12:03:37,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3561 Valid, 9918 Invalid, 8271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 4330 Invalid, 0 Unknown, 3550 Unchecked, 10.9s Time] [2022-02-15 12:03:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4656 states. [2022-02-15 12:03:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4656 to 3235. [2022-02-15 12:03:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3235 states, 3234 states have (on average 2.5766852195423624) internal successors, (8333), 3234 states have internal predecessors, (8333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:03:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3235 states to 3235 states and 8333 transitions. [2022-02-15 12:03:37,780 INFO L78 Accepts]: Start accepts. Automaton has 3235 states and 8333 transitions. Word has length 133 [2022-02-15 12:03:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:03:37,780 INFO L470 AbstractCegarLoop]: Abstraction has 3235 states and 8333 transitions. [2022-02-15 12:03:37,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:03:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3235 states and 8333 transitions. [2022-02-15 12:03:37,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:03:37,786 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:03:37,786 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:03:37,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-15 12:03:37,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:03:37,999 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:03:38,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:03:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash 449497782, now seen corresponding path program 13 times [2022-02-15 12:03:38,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:03:38,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524058029] [2022-02-15 12:03:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:03:38,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:03:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:03:39,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:03:39,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:03:39,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524058029] [2022-02-15 12:03:39,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524058029] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:03:39,717 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736257650] [2022-02-15 12:03:39,717 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:03:39,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:03:39,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:03:39,718 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) [2022-02-15 12:03:39,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-15 12:03:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:03:39,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 68 conjunts are in the unsatisfiable core [2022-02-15 12:03:39,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:03:41,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:03:41,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:03:42,225 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 12:03:42,225 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 23 treesize of output 10 [2022-02-15 12:03:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:03:42,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:03:44,247 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:03:44,247 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 87 treesize of output 87 [2022-02-15 12:03:44,250 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 66 treesize of output 60 [2022-02-15 12:03:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:03:59,092 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736257650] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:03:59,092 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:03:59,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 102 [2022-02-15 12:03:59,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448566174] [2022-02-15 12:03:59,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:03:59,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2022-02-15 12:03:59,093 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:03:59,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2022-02-15 12:03:59,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=9550, Unknown=9, NotChecked=0, Total=10302 [2022-02-15 12:03:59,094 INFO L87 Difference]: Start difference. First operand 3235 states and 8333 transitions. Second operand has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:04:07,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:04:07,544 INFO L93 Difference]: Finished difference Result 4715 states and 11920 transitions. [2022-02-15 12:04:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 12:04:07,544 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:04:07,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:04:07,550 INFO L225 Difference]: With dead ends: 4715 [2022-02-15 12:04:07,550 INFO L226 Difference]: Without dead ends: 4598 [2022-02-15 12:04:07,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 218 SyntacticMatches, 9 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8034 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=2255, Invalid=23478, Unknown=27, NotChecked=0, Total=25760 [2022-02-15 12:04:07,552 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 2250 mSDsluCounter, 7722 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 7401 SdHoareTripleChecker+Invalid, 3997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1907 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:04:07,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2250 Valid, 7401 Invalid, 3997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2020 Invalid, 0 Unknown, 1907 Unchecked, 1.3s Time] [2022-02-15 12:04:07,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4598 states. [2022-02-15 12:04:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4598 to 3387. [2022-02-15 12:04:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 2.577968103957472) internal successors, (8729), 3386 states have internal predecessors, (8729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:04:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 8729 transitions. [2022-02-15 12:04:07,600 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 8729 transitions. Word has length 133 [2022-02-15 12:04:07,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:04:07,600 INFO L470 AbstractCegarLoop]: Abstraction has 3387 states and 8729 transitions. [2022-02-15 12:04:07,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.323529411764706) internal successors, (339), 102 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:04:07,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 8729 transitions. [2022-02-15 12:04:07,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:04:07,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:04:07,605 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:04:07,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-02-15 12:04:07,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:04:07,822 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:04:07,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:04:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash -852291404, now seen corresponding path program 14 times [2022-02-15 12:04:07,822 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:04:07,822 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083052703] [2022-02-15 12:04:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:04:07,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:04:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:04:09,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:04:09,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:04:09,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083052703] [2022-02-15 12:04:09,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083052703] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:04:09,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309645253] [2022-02-15 12:04:09,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:04:09,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:04:09,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:04:09,506 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) [2022-02-15 12:04:09,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-15 12:04:09,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:04:09,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:04:09,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-15 12:04:09,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:04:11,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:04:11,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:04:12,133 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 12:04:12,134 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 23 treesize of output 10 [2022-02-15 12:04:12,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:04:12,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:04:13,733 WARN L838 $PredicateComparison]: unable to prove that (or (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_637) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0))) (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0)) is different from false [2022-02-15 12:04:13,755 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_#t~post1#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_637) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0)))) is different from false [2022-02-15 12:04:13,768 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_637) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0)))) is different from false [2022-02-15 12:04:13,794 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (<= c_~n~0 (+ c_~q_front~0 1)) (<= c_~n~0 0) (and (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_637) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0)) (forall ((aux_mod_aux_mod_~C~0_30_61 Int) (aux_div_aux_mod_~C~0_30_61 Int)) (let ((.cse2 (* aux_div_aux_mod_~C~0_30_61 4294967296))) (let ((.cse1 (+ .cse2 aux_mod_aux_mod_~C~0_30_61)) (.cse0 (* 4294967295 c_~x~0))) (or (<= (+ .cse0 c_~y~0 4294967296) .cse1) (= (+ (* (- 1) c_~y~0) .cse2 (* c_~x~0 (- 4294967295)) aux_mod_aux_mod_~C~0_30_61) aux_mod_aux_mod_~C~0_30_61) (>= aux_mod_aux_mod_~C~0_30_61 4294967296) (< .cse1 (+ .cse0 c_~y~0)) (> 0 aux_mod_aux_mod_~C~0_30_61))))))) is different from false [2022-02-15 12:04:13,817 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:04:13,818 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 87 treesize of output 87 [2022-02-15 12:04:13,820 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 66 treesize of output 60 [2022-02-15 12:04:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:04:17,295 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309645253] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:04:17,295 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:04:17,295 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-02-15 12:04:17,296 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005054911] [2022-02-15 12:04:17,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:04:17,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 12:04:17,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:04:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 12:04:17,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=9065, Unknown=4, NotChecked=788, Total=10506 [2022-02-15 12:04:17,297 INFO L87 Difference]: Start difference. First operand 3387 states and 8729 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:04:23,337 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296))) (.cse1 (select (select |c_#memory_int| c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))) (.cse4 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0)) (.cse2 (<= c_~n~0 (+ c_~q_front~0 1))) (.cse3 (<= c_~n~0 0))) (and (or (and .cse0 (= c_~N~0 .cse1)) .cse2 .cse3 .cse4) (or .cse2 .cse3 (and .cse0 (= (+ c_~s~0 .cse1) c_~N~0)) .cse4) (or (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) .cse2 .cse3 (and (forall ((v_ArrVal_637 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_637) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0)) (forall ((aux_mod_aux_mod_~C~0_30_61 Int) (aux_div_aux_mod_~C~0_30_61 Int)) (let ((.cse7 (* aux_div_aux_mod_~C~0_30_61 4294967296))) (let ((.cse6 (+ .cse7 aux_mod_aux_mod_~C~0_30_61)) (.cse5 (* 4294967295 c_~x~0))) (or (<= (+ .cse5 c_~y~0 4294967296) .cse6) (= (+ (* (- 1) c_~y~0) .cse7 (* c_~x~0 (- 4294967295)) aux_mod_aux_mod_~C~0_30_61) aux_mod_aux_mod_~C~0_30_61) (>= aux_mod_aux_mod_~C~0_30_61 4294967296) (< .cse6 (+ .cse5 c_~y~0)) (> 0 aux_mod_aux_mod_~C~0_30_61))))))))) is different from false [2022-02-15 12:04:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:04:49,678 INFO L93 Difference]: Finished difference Result 5506 states and 13863 transitions. [2022-02-15 12:04:49,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 12:04:49,678 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:04:49,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:04:49,685 INFO L225 Difference]: With dead ends: 5506 [2022-02-15 12:04:49,686 INFO L226 Difference]: Without dead ends: 5191 [2022-02-15 12:04:49,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 208 SyntacticMatches, 10 SemanticMatches, 174 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 9335 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=2285, Invalid=26793, Unknown=12, NotChecked=1710, Total=30800 [2022-02-15 12:04:49,687 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 2151 mSDsluCounter, 10395 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 9603 SdHoareTripleChecker+Invalid, 9709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6630 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-02-15 12:04:49,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2151 Valid, 9603 Invalid, 9709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2947 Invalid, 0 Unknown, 6630 Unchecked, 3.4s Time] [2022-02-15 12:04:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2022-02-15 12:04:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 3420. [2022-02-15 12:04:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3420 states, 3419 states have (on average 2.584381398069611) internal successors, (8836), 3419 states have internal predecessors, (8836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:04:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 8836 transitions. [2022-02-15 12:04:49,758 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 8836 transitions. Word has length 133 [2022-02-15 12:04:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:04:49,758 INFO L470 AbstractCegarLoop]: Abstraction has 3420 states and 8836 transitions. [2022-02-15 12:04:49,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:04:49,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 8836 transitions. [2022-02-15 12:04:49,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:04:49,763 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:04:49,763 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:04:49,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-15 12:04:49,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:04:49,967 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:04:49,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:04:49,968 INFO L85 PathProgramCache]: Analyzing trace with hash -744870240, now seen corresponding path program 15 times [2022-02-15 12:04:49,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:04:49,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175613378] [2022-02-15 12:04:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:04:49,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:04:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:04:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:04:51,579 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:04:51,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175613378] [2022-02-15 12:04:51,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175613378] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:04:51,579 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337384138] [2022-02-15 12:04:51,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:04:51,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:04:51,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:04:51,581 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) [2022-02-15 12:04:51,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-15 12:04:51,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:04:51,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:04:51,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 53 conjunts are in the unsatisfiable core [2022-02-15 12:04:51,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:04:53,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:04:53,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:04:53,685 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 12:04:53,685 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 23 treesize of output 10 [2022-02-15 12:04:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:04:54,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:04:56,143 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:04:56,143 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 59 treesize of output 59 [2022-02-15 12:04:56,147 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 38 treesize of output 32 [2022-02-15 12:04:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:04:58,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337384138] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:04:58,486 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:04:58,486 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 29, 29] total 86 [2022-02-15 12:04:58,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126832435] [2022-02-15 12:04:58,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:04:58,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 12:04:58,487 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:04:58,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 12:04:58,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=6893, Unknown=4, NotChecked=0, Total=7310 [2022-02-15 12:04:58,488 INFO L87 Difference]: Start difference. First operand 3420 states and 8836 transitions. Second operand has 86 states, 86 states have (on average 3.7790697674418605) internal successors, (325), 86 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:05:19,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:05:19,724 INFO L93 Difference]: Finished difference Result 4901 states and 12501 transitions. [2022-02-15 12:05:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-02-15 12:05:19,725 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.7790697674418605) internal successors, (325), 86 states have internal predecessors, (325), 0 states have call successors, (0), 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 133 [2022-02-15 12:05:19,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:05:19,733 INFO L225 Difference]: With dead ends: 4901 [2022-02-15 12:05:19,733 INFO L226 Difference]: Without dead ends: 4217 [2022-02-15 12:05:19,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 224 SyntacticMatches, 5 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7069 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=1580, Invalid=22277, Unknown=13, NotChecked=0, Total=23870 [2022-02-15 12:05:19,737 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1796 mSDsluCounter, 9516 mSDsCounter, 0 mSdLazyCounter, 2707 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 9029 SdHoareTripleChecker+Invalid, 5199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2421 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 12:05:19,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 9029 Invalid, 5199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2707 Invalid, 0 Unknown, 2421 Unchecked, 2.3s Time] [2022-02-15 12:05:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4217 states. [2022-02-15 12:05:19,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4217 to 3304. [2022-02-15 12:05:19,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 3303 states have (on average 2.5597941265516195) internal successors, (8455), 3303 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:05:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 8455 transitions. [2022-02-15 12:05:19,844 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 8455 transitions. Word has length 133 [2022-02-15 12:05:19,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:05:19,844 INFO L470 AbstractCegarLoop]: Abstraction has 3304 states and 8455 transitions. [2022-02-15 12:05:19,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.7790697674418605) internal successors, (325), 86 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:05:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 8455 transitions. [2022-02-15 12:05:19,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:05:19,864 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:05:19,864 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:05:19,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-15 12:05:20,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:05:20,065 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:05:20,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:05:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1907149280, now seen corresponding path program 16 times [2022-02-15 12:05:20,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:05:20,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996742142] [2022-02-15 12:05:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:05:20,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:05:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:05:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:05:21,778 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:05:21,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996742142] [2022-02-15 12:05:21,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996742142] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:05:21,778 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389929414] [2022-02-15 12:05:21,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:05:21,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:05:21,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:05:21,780 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) [2022-02-15 12:05:21,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-15 12:05:21,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:05:21,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:05:21,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 70 conjunts are in the unsatisfiable core [2022-02-15 12:05:21,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:05:23,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:05:23,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:05:24,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-15 12:05:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:05:25,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:05:26,850 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:05:26,850 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 90 treesize of output 82 [2022-02-15 12:05:26,855 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 54 treesize of output 42 [2022-02-15 12:05:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:05:29,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389929414] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:05:29,761 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:05:29,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39, 38] total 103 [2022-02-15 12:05:29,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84769033] [2022-02-15 12:05:29,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:05:29,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 12:05:29,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:05:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 12:05:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=9751, Unknown=6, NotChecked=0, Total=10506 [2022-02-15 12:05:29,763 INFO L87 Difference]: Start difference. First operand 3304 states and 8455 transitions. Second operand has 103 states, 103 states have (on average 3.233009708737864) internal successors, (333), 103 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:05:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:05:40,996 INFO L93 Difference]: Finished difference Result 5685 states and 14514 transitions. [2022-02-15 12:05:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-15 12:05:40,996 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.233009708737864) internal successors, (333), 103 states have internal predecessors, (333), 0 states have call successors, (0), 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 133 [2022-02-15 12:05:40,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:05:41,004 INFO L225 Difference]: With dead ends: 5685 [2022-02-15 12:05:41,004 INFO L226 Difference]: Without dead ends: 5478 [2022-02-15 12:05:41,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 215 SyntacticMatches, 5 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10838 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=2483, Invalid=29724, Unknown=13, NotChecked=0, Total=32220 [2022-02-15 12:05:41,006 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 2714 mSDsluCounter, 11503 mSDsCounter, 0 mSdLazyCounter, 4934 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2714 SdHoareTripleChecker+Valid, 10858 SdHoareTripleChecker+Invalid, 6455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 4934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1356 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-02-15 12:05:41,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2714 Valid, 10858 Invalid, 6455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 4934 Invalid, 0 Unknown, 1356 Unchecked, 3.5s Time] [2022-02-15 12:05:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2022-02-15 12:05:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 3669. [2022-02-15 12:05:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3669 states, 3668 states have (on average 2.568429661941112) internal successors, (9421), 3668 states have internal predecessors, (9421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:05:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3669 states to 3669 states and 9421 transitions. [2022-02-15 12:05:41,075 INFO L78 Accepts]: Start accepts. Automaton has 3669 states and 9421 transitions. Word has length 133 [2022-02-15 12:05:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:05:41,076 INFO L470 AbstractCegarLoop]: Abstraction has 3669 states and 9421 transitions. [2022-02-15 12:05:41,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.233009708737864) internal successors, (333), 103 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:05:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 3669 states and 9421 transitions. [2022-02-15 12:05:41,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:05:41,083 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:05:41,084 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:05:41,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-15 12:05:41,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:05:41,299 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:05:41,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:05:41,300 INFO L85 PathProgramCache]: Analyzing trace with hash -624513480, now seen corresponding path program 17 times [2022-02-15 12:05:41,300 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:05:41,300 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261854279] [2022-02-15 12:05:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:05:41,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:05:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:05:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:05:42,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:05:42,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261854279] [2022-02-15 12:05:42,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261854279] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:05:42,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299648035] [2022-02-15 12:05:42,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:05:42,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:05:42,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:05:42,962 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) [2022-02-15 12:05:42,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-15 12:05:43,082 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:05:43,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:05:43,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 71 conjunts are in the unsatisfiable core [2022-02-15 12:05:43,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:05:43,130 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 [2022-02-15 12:05:43,520 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 12:05:43,520 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 [2022-02-15 12:05:44,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:05:45,240 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 [2022-02-15 12:05:45,674 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:05:45,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:05:46,734 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:05:46,735 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 87 treesize of output 87 [2022-02-15 12:05:46,738 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 66 treesize of output 60 [2022-02-15 12:05:51,298 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 [2022-02-15 12:05:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:05:51,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299648035] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:05:51,505 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:05:51,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 36] total 104 [2022-02-15 12:05:51,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724602315] [2022-02-15 12:05:51,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:05:51,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-15 12:05:51,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:05:51,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-15 12:05:51,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=736, Invalid=9972, Unknown=4, NotChecked=0, Total=10712 [2022-02-15 12:05:51,507 INFO L87 Difference]: Start difference. First operand 3669 states and 9421 transitions. Second operand has 104 states, 104 states have (on average 3.394230769230769) internal successors, (353), 104 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:00,977 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse7 (+ (* c_~q_front~0 4) c_~q~0.offset))) (let ((.cse0 (<= (* c_~n~0 4) (+ c_~q~0.offset 3 (* 4 c_~q_back~0)))) (.cse1 (<= .cse7 0)) (.cse2 (<= 0 c_~q_front~0)) (.cse3 (= (select (select |c_#memory_int| c_~q~0.base) .cse7) 1)) (.cse4 (not (<= 0 c_~q_back~0))) (.cse5 (not (< c_~q_back~0 c_~n~0))) (.cse6 (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_725 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_725) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0))))) (and (= c_~y~0 0) (<= |c_thread1Thread1of1ForFork0_~i~0#1| 1) (or .cse0 (and .cse1 .cse2 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base)) .cse3)) (<= 1 c_~N~0) (<= c_~x~0 c_~C~0) (<= c_~N~0 1) (<= c_~C~0 c_~x~0) (= c_~s~0 0) (or .cse0 (and .cse1 .cse2 .cse3)) (or .cse4 (< (+ |c_thread1Thread1of1ForFork0_#t~post1#1| 1) c_~N~0) .cse5 .cse6) (= c_~q~0.offset 0) (or .cse4 (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) .cse5 .cse6)))) is different from false [2022-02-15 12:06:01,183 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (+ (* c_~q_front~0 4) c_~q~0.offset))) (let ((.cse0 (<= (* c_~n~0 4) (+ c_~q~0.offset 3 (* 4 c_~q_back~0)))) (.cse1 (<= .cse4 0)) (.cse2 (<= 0 c_~q_front~0)) (.cse3 (= (select (select |c_#memory_int| c_~q~0.base) .cse4) 1))) (and (= c_~y~0 0) (<= |c_thread1Thread1of1ForFork0_~i~0#1| 1) (or .cse0 (and .cse1 .cse2 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~q~0.base)) .cse3)) (<= 1 c_~N~0) (<= c_~x~0 c_~C~0) (<= c_~N~0 1) (<= c_~C~0 c_~x~0) (= c_~s~0 0) (or .cse0 (and .cse1 .cse2 .cse3)) (= c_~q~0.offset 0) (or (not (<= 0 c_~q_back~0)) (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (not (< c_~q_back~0 c_~n~0)) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_725 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_725) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0))))))) is different from false [2022-02-15 12:06:10,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:06:10,352 INFO L93 Difference]: Finished difference Result 5489 states and 13969 transitions. [2022-02-15 12:06:10,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-02-15 12:06:10,352 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.394230769230769) internal successors, (353), 104 states have internal predecessors, (353), 0 states have call successors, (0), 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 133 [2022-02-15 12:06:10,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:06:10,360 INFO L225 Difference]: With dead ends: 5489 [2022-02-15 12:06:10,361 INFO L226 Difference]: Without dead ends: 5372 [2022-02-15 12:06:10,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 216 SyntacticMatches, 10 SemanticMatches, 180 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10391 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=2604, Invalid=29597, Unknown=27, NotChecked=714, Total=32942 [2022-02-15 12:06:10,363 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 2982 mSDsluCounter, 8441 mSDsCounter, 0 mSdLazyCounter, 3393 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2982 SdHoareTripleChecker+Valid, 7846 SdHoareTripleChecker+Invalid, 6513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 3393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2925 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:06:10,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2982 Valid, 7846 Invalid, 6513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 3393 Invalid, 0 Unknown, 2925 Unchecked, 2.2s Time] [2022-02-15 12:06:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5372 states. [2022-02-15 12:06:10,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5372 to 3807. [2022-02-15 12:06:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3807 states, 3806 states have (on average 2.575669994745139) internal successors, (9803), 3806 states have internal predecessors, (9803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:10,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3807 states to 3807 states and 9803 transitions. [2022-02-15 12:06:10,429 INFO L78 Accepts]: Start accepts. Automaton has 3807 states and 9803 transitions. Word has length 133 [2022-02-15 12:06:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:06:10,429 INFO L470 AbstractCegarLoop]: Abstraction has 3807 states and 9803 transitions. [2022-02-15 12:06:10,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.394230769230769) internal successors, (353), 104 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3807 states and 9803 transitions. [2022-02-15 12:06:10,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:06:10,434 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:06:10,434 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:06:10,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-02-15 12:06:10,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:06:10,640 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:06:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:06:10,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1926302666, now seen corresponding path program 18 times [2022-02-15 12:06:10,640 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:06:10,640 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333025482] [2022-02-15 12:06:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:06:10,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:06:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:06:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:12,214 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:06:12,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333025482] [2022-02-15 12:06:12,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333025482] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:06:12,214 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219922088] [2022-02-15 12:06:12,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:06:12,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:06:12,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:06:12,215 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) [2022-02-15 12:06:12,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-15 12:06:12,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:06:12,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:06:12,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 71 conjunts are in the unsatisfiable core [2022-02-15 12:06:12,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:06:14,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:06:14,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-02-15 12:06:14,671 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 12:06:14,671 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 24 treesize of output 10 [2022-02-15 12:06:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:15,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:06:16,614 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:06:16,614 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 87 treesize of output 87 [2022-02-15 12:06:16,637 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 66 treesize of output 60 [2022-02-15 12:06:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:22,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219922088] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:06:22,891 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:06:22,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 103 [2022-02-15 12:06:22,891 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647694249] [2022-02-15 12:06:22,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:06:22,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 12:06:22,893 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:06:22,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 12:06:22,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=726, Invalid=9773, Unknown=7, NotChecked=0, Total=10506 [2022-02-15 12:06:22,894 INFO L87 Difference]: Start difference. First operand 3807 states and 9803 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:06:33,580 INFO L93 Difference]: Finished difference Result 5984 states and 15339 transitions. [2022-02-15 12:06:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-02-15 12:06:33,581 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:06:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:06:33,589 INFO L225 Difference]: With dead ends: 5984 [2022-02-15 12:06:33,589 INFO L226 Difference]: Without dead ends: 5854 [2022-02-15 12:06:33,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 214 SyntacticMatches, 18 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11639 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=2669, Invalid=30984, Unknown=19, NotChecked=0, Total=33672 [2022-02-15 12:06:33,591 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 2977 mSDsluCounter, 10236 mSDsCounter, 0 mSdLazyCounter, 3636 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 9647 SdHoareTripleChecker+Invalid, 7185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3401 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 12:06:33,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2977 Valid, 9647 Invalid, 7185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 3636 Invalid, 0 Unknown, 3401 Unchecked, 2.1s Time] [2022-02-15 12:06:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5854 states. [2022-02-15 12:06:33,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5854 to 4000. [2022-02-15 12:06:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3999 states have (on average 2.5778944736184046) internal successors, (10309), 3999 states have internal predecessors, (10309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 10309 transitions. [2022-02-15 12:06:33,645 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 10309 transitions. Word has length 133 [2022-02-15 12:06:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:06:33,645 INFO L470 AbstractCegarLoop]: Abstraction has 4000 states and 10309 transitions. [2022-02-15 12:06:33,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 10309 transitions. [2022-02-15 12:06:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:06:33,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:06:33,650 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:06:33,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-02-15 12:06:33,854 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,SelfDestructingSolverStorable34 [2022-02-15 12:06:33,855 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:06:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:06:33,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1818881502, now seen corresponding path program 19 times [2022-02-15 12:06:33,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:06:33,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439583529] [2022-02-15 12:06:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:06:33,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:06:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:06:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:35,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:06:35,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439583529] [2022-02-15 12:06:35,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439583529] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:06:35,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988482177] [2022-02-15 12:06:35,460 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-15 12:06:35,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:06:35,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:06:35,462 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) [2022-02-15 12:06:35,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-15 12:06:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:06:35,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 77 conjunts are in the unsatisfiable core [2022-02-15 12:06:35,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:06:37,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:06:37,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:06:38,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-15 12:06:38,959 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:38,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:06:40,560 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:06:40,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2022-02-15 12:06:40,564 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 38 treesize of output 32 [2022-02-15 12:06:43,473 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:43,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988482177] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:06:43,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:06:43,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 103 [2022-02-15 12:06:43,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788312800] [2022-02-15 12:06:43,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:06:43,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-02-15 12:06:43,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:06:43,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-02-15 12:06:43,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=751, Invalid=9747, Unknown=8, NotChecked=0, Total=10506 [2022-02-15 12:06:43,476 INFO L87 Difference]: Start difference. First operand 4000 states and 10309 transitions. Second operand has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:06:51,014 INFO L93 Difference]: Finished difference Result 5746 states and 14657 transitions. [2022-02-15 12:06:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 12:06:51,015 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:06:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:06:51,024 INFO L225 Difference]: With dead ends: 5746 [2022-02-15 12:06:51,024 INFO L226 Difference]: Without dead ends: 5644 [2022-02-15 12:06:51,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7872 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1920, Invalid=21935, Unknown=15, NotChecked=0, Total=23870 [2022-02-15 12:06:51,047 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1802 mSDsluCounter, 11586 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1802 SdHoareTripleChecker+Valid, 11066 SdHoareTripleChecker+Invalid, 4999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2096 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 12:06:51,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1802 Valid, 11066 Invalid, 4999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2825 Invalid, 0 Unknown, 2096 Unchecked, 1.8s Time] [2022-02-15 12:06:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5644 states. [2022-02-15 12:06:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5644 to 4085. [2022-02-15 12:06:51,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4085 states, 4084 states have (on average 2.5768854064642506) internal successors, (10524), 4084 states have internal predecessors, (10524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4085 states to 4085 states and 10524 transitions. [2022-02-15 12:06:51,121 INFO L78 Accepts]: Start accepts. Automaton has 4085 states and 10524 transitions. Word has length 133 [2022-02-15 12:06:51,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:06:51,121 INFO L470 AbstractCegarLoop]: Abstraction has 4085 states and 10524 transitions. [2022-02-15 12:06:51,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 3.29126213592233) internal successors, (339), 103 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:06:51,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4085 states and 10524 transitions. [2022-02-15 12:06:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:06:51,126 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:06:51,126 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:06:51,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-02-15 12:06:51,337 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,SelfDestructingSolverStorable35 [2022-02-15 12:06:51,338 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:06:51,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:06:51,338 INFO L85 PathProgramCache]: Analyzing trace with hash 838910620, now seen corresponding path program 20 times [2022-02-15 12:06:51,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:06:51,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953504013] [2022-02-15 12:06:51,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:06:51,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:06:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:06:52,938 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:52,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:06:52,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953504013] [2022-02-15 12:06:52,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953504013] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:06:52,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580751087] [2022-02-15 12:06:52,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-15 12:06:52,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:06:52,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:06:52,940 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) [2022-02-15 12:06:52,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-15 12:06:53,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-15 12:06:53,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:06:53,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 72 conjunts are in the unsatisfiable core [2022-02-15 12:06:53,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:06:54,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:06:54,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:06:55,487 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-02-15 12:06:55,487 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 24 treesize of output 10 [2022-02-15 12:06:56,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:06:56,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:06:57,754 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:06:57,754 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 59 treesize of output 59 [2022-02-15 12:06:57,758 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 38 treesize of output 32 [2022-02-15 12:07:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:00,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580751087] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:07:00,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:07:00,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 104 [2022-02-15 12:07:00,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878572197] [2022-02-15 12:07:00,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:07:00,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2022-02-15 12:07:00,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:07:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2022-02-15 12:07:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=9989, Unknown=7, NotChecked=0, Total=10712 [2022-02-15 12:07:00,384 INFO L87 Difference]: Start difference. First operand 4085 states and 10524 transitions. Second operand has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:07,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:07:07,942 INFO L93 Difference]: Finished difference Result 5457 states and 13869 transitions. [2022-02-15 12:07:07,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-02-15 12:07:07,942 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-02-15 12:07:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:07:07,948 INFO L225 Difference]: With dead ends: 5457 [2022-02-15 12:07:07,948 INFO L226 Difference]: Without dead ends: 5355 [2022-02-15 12:07:07,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 215 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7032 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=1940, Invalid=21610, Unknown=12, NotChecked=0, Total=23562 [2022-02-15 12:07:07,950 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 2529 mSDsluCounter, 9440 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 8856 SdHoareTripleChecker+Invalid, 4637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2462 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:07:07,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2529 Valid, 8856 Invalid, 4637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2128 Invalid, 0 Unknown, 2462 Unchecked, 1.6s Time] [2022-02-15 12:07:07,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5355 states. [2022-02-15 12:07:07,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5355 to 4155. [2022-02-15 12:07:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4155 states, 4154 states have (on average 2.571738083774675) internal successors, (10683), 4154 states have internal predecessors, (10683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:08,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4155 states to 4155 states and 10683 transitions. [2022-02-15 12:07:08,005 INFO L78 Accepts]: Start accepts. Automaton has 4155 states and 10683 transitions. Word has length 133 [2022-02-15 12:07:08,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:07:08,005 INFO L470 AbstractCegarLoop]: Abstraction has 4155 states and 10683 transitions. [2022-02-15 12:07:08,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 3.2596153846153846) internal successors, (339), 104 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:08,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4155 states and 10683 transitions. [2022-02-15 12:07:08,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:07:08,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:07:08,010 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:07:08,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-15 12:07:08,214 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,SelfDestructingSolverStorable36 [2022-02-15 12:07:08,215 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:07:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:07:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1271972772, now seen corresponding path program 21 times [2022-02-15 12:07:08,215 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:07:08,215 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057110930] [2022-02-15 12:07:08,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:07:08,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:07:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:07:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:09,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:07:09,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057110930] [2022-02-15 12:07:09,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057110930] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:07:09,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542738303] [2022-02-15 12:07:09,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-15 12:07:09,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:07:09,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:07:09,769 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) [2022-02-15 12:07:09,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-15 12:07:09,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-15 12:07:09,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:07:09,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 51 conjunts are in the unsatisfiable core [2022-02-15 12:07:09,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:07:11,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:07:11,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:07:11,804 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-02-15 12:07:11,805 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 23 treesize of output 10 [2022-02-15 12:07:12,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:07:12,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:07:13,559 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:07:13,559 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 59 treesize of output 59 [2022-02-15 12:07:13,564 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 38 treesize of output 32 [2022-02-15 12:07:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-15 12:07:15,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542738303] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:07:15,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:07:15,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 29, 29] total 86 [2022-02-15 12:07:15,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142099592] [2022-02-15 12:07:15,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:07:15,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-02-15 12:07:15,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:07:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-02-15 12:07:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=6899, Unknown=2, NotChecked=0, Total=7310 [2022-02-15 12:07:15,509 INFO L87 Difference]: Start difference. First operand 4155 states and 10683 transitions. Second operand has 86 states, 86 states have (on average 3.7790697674418605) internal successors, (325), 86 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:30,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:07:30,384 INFO L93 Difference]: Finished difference Result 5587 states and 14213 transitions. [2022-02-15 12:07:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 12:07:30,384 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 3.7790697674418605) internal successors, (325), 86 states have internal predecessors, (325), 0 states have call successors, (0), 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 133 [2022-02-15 12:07:30,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:07:30,392 INFO L225 Difference]: With dead ends: 5587 [2022-02-15 12:07:30,392 INFO L226 Difference]: Without dead ends: 5485 [2022-02-15 12:07:30,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 225 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4929 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=1261, Invalid=16291, Unknown=4, NotChecked=0, Total=17556 [2022-02-15 12:07:30,407 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 1770 mSDsluCounter, 9432 mSDsCounter, 0 mSdLazyCounter, 2528 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 8768 SdHoareTripleChecker+Invalid, 5238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2666 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 12:07:30,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1770 Valid, 8768 Invalid, 5238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2528 Invalid, 0 Unknown, 2666 Unchecked, 2.2s Time] [2022-02-15 12:07:30,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2022-02-15 12:07:30,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 4224. [2022-02-15 12:07:30,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4224 states, 4223 states have (on average 2.5702107506511958) internal successors, (10854), 4223 states have internal predecessors, (10854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:30,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4224 states to 4224 states and 10854 transitions. [2022-02-15 12:07:30,522 INFO L78 Accepts]: Start accepts. Automaton has 4224 states and 10854 transitions. Word has length 133 [2022-02-15 12:07:30,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:07:30,543 INFO L470 AbstractCegarLoop]: Abstraction has 4224 states and 10854 transitions. [2022-02-15 12:07:30,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 3.7790697674418605) internal successors, (325), 86 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:30,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4224 states and 10854 transitions. [2022-02-15 12:07:30,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:07:30,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:07:30,549 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:07:30,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-15 12:07:30,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:07:30,754 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:07:30,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:07:30,755 INFO L85 PathProgramCache]: Analyzing trace with hash -2076470794, now seen corresponding path program 22 times [2022-02-15 12:07:30,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:07:30,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293856764] [2022-02-15 12:07:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:07:30,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:07:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:07:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:32,149 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:07:32,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293856764] [2022-02-15 12:07:32,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293856764] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:07:32,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707362673] [2022-02-15 12:07:32,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-15 12:07:32,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:07:32,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:07:32,151 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:07:32,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-15 12:07:32,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-15 12:07:32,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:07:32,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 69 conjunts are in the unsatisfiable core [2022-02-15 12:07:32,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:07:34,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:07:34,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:07:34,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-02-15 12:07:35,268 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:35,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:07:36,640 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:07:36,641 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 59 treesize of output 59 [2022-02-15 12:07:36,644 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 38 treesize of output 32 [2022-02-15 12:07:39,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:39,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707362673] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:07:39,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:07:39,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 38] total 101 [2022-02-15 12:07:39,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348912091] [2022-02-15 12:07:39,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:07:39,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-02-15 12:07:39,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:07:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-02-15 12:07:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=695, Invalid=9402, Unknown=3, NotChecked=0, Total=10100 [2022-02-15 12:07:39,924 INFO L87 Difference]: Start difference. First operand 4224 states and 10854 transitions. Second operand has 101 states, 101 states have (on average 3.277227722772277) internal successors, (331), 101 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:07:44,844 INFO L93 Difference]: Finished difference Result 5927 states and 15155 transitions. [2022-02-15 12:07:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 12:07:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 3.277227722772277) internal successors, (331), 101 states have internal predecessors, (331), 0 states have call successors, (0), 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 133 [2022-02-15 12:07:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:07:44,853 INFO L225 Difference]: With dead ends: 5927 [2022-02-15 12:07:44,853 INFO L226 Difference]: Without dead ends: 5825 [2022-02-15 12:07:44,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 209 SyntacticMatches, 3 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6392 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1346, Invalid=17283, Unknown=3, NotChecked=0, Total=18632 [2022-02-15 12:07:44,856 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 1449 mSDsluCounter, 10303 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 9941 SdHoareTripleChecker+Invalid, 4130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1760 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 12:07:44,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 9941 Invalid, 4130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2334 Invalid, 0 Unknown, 1760 Unchecked, 1.6s Time] [2022-02-15 12:07:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5825 states. [2022-02-15 12:07:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5825 to 4314. [2022-02-15 12:07:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4314 states, 4313 states have (on average 2.5722235103176443) internal successors, (11094), 4313 states have internal predecessors, (11094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:44,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 11094 transitions. [2022-02-15 12:07:44,917 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 11094 transitions. Word has length 133 [2022-02-15 12:07:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:07:44,918 INFO L470 AbstractCegarLoop]: Abstraction has 4314 states and 11094 transitions. [2022-02-15 12:07:44,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 3.277227722772277) internal successors, (331), 101 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:07:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 11094 transitions. [2022-02-15 12:07:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:07:44,922 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:07:44,922 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:07:44,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-02-15 12:07:45,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-15 12:07:45,127 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:07:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:07:45,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1609121184, now seen corresponding path program 23 times [2022-02-15 12:07:45,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:07:45,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366079511] [2022-02-15 12:07:45,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:07:45,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:07:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:07:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:46,750 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:07:46,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366079511] [2022-02-15 12:07:46,750 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366079511] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:07:46,750 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622265577] [2022-02-15 12:07:46,750 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-15 12:07:46,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:07:46,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:07:46,751 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:07:46,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-15 12:07:46,899 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-15 12:07:46,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:07:46,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 71 conjunts are in the unsatisfiable core [2022-02-15 12:07:46,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:07:46,946 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 [2022-02-15 12:07:47,334 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-02-15 12:07:47,334 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 [2022-02-15 12:07:48,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:07:49,122 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 [2022-02-15 12:07:49,620 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:49,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:07:50,831 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:07:50,831 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 87 treesize of output 87 [2022-02-15 12:07:50,835 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 66 treesize of output 60 [2022-02-15 12:07:55,451 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 [2022-02-15 12:07:55,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:07:55,634 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622265577] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:07:55,634 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:07:55,634 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 38, 37] total 105 [2022-02-15 12:07:55,634 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512599155] [2022-02-15 12:07:55,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:07:55,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2022-02-15 12:07:55,635 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:07:55,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2022-02-15 12:07:55,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=721, Invalid=10196, Unknown=3, NotChecked=0, Total=10920 [2022-02-15 12:07:55,636 INFO L87 Difference]: Start difference. First operand 4314 states and 11094 transitions. Second operand has 105 states, 105 states have (on average 3.361904761904762) internal successors, (353), 105 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:08:04,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 12:08:04,888 INFO L93 Difference]: Finished difference Result 6639 states and 16923 transitions. [2022-02-15 12:08:04,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 12:08:04,888 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.361904761904762) internal successors, (353), 105 states have internal predecessors, (353), 0 states have call successors, (0), 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 133 [2022-02-15 12:08:04,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 12:08:04,897 INFO L225 Difference]: With dead ends: 6639 [2022-02-15 12:08:04,897 INFO L226 Difference]: Without dead ends: 6330 [2022-02-15 12:08:04,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 219 SyntacticMatches, 9 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9415 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2350, Invalid=27036, Unknown=26, NotChecked=0, Total=29412 [2022-02-15 12:08:04,899 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 2654 mSDsluCounter, 10577 mSDsCounter, 0 mSdLazyCounter, 3660 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 9985 SdHoareTripleChecker+Invalid, 5512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 3660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1738 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 12:08:04,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2654 Valid, 9985 Invalid, 5512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 3660 Invalid, 0 Unknown, 1738 Unchecked, 1.9s Time] [2022-02-15 12:08:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6330 states. [2022-02-15 12:08:04,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6330 to 4469. [2022-02-15 12:08:04,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 4468 states have (on average 2.573410922112802) internal successors, (11498), 4468 states have internal predecessors, (11498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:08:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 11498 transitions. [2022-02-15 12:08:04,976 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 11498 transitions. Word has length 133 [2022-02-15 12:08:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 12:08:04,976 INFO L470 AbstractCegarLoop]: Abstraction has 4469 states and 11498 transitions. [2022-02-15 12:08:04,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.361904761904762) internal successors, (353), 105 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:08:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 11498 transitions. [2022-02-15 12:08:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-02-15 12:08:04,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 12:08:04,981 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 12:08:05,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-15 12:08:05,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-15 12:08:05,200 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-02-15 12:08:05,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 12:08:05,200 INFO L85 PathProgramCache]: Analyzing trace with hash -326485384, now seen corresponding path program 24 times [2022-02-15 12:08:05,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 12:08:05,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680484956] [2022-02-15 12:08:05,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 12:08:05,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 12:08:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 12:08:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:08:06,947 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 12:08:06,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680484956] [2022-02-15 12:08:06,947 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680484956] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-15 12:08:06,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022777163] [2022-02-15 12:08:06,947 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-15 12:08:06,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-15 12:08:06,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 12:08:06,949 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-15 12:08:06,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-15 12:08:07,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-15 12:08:07,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-15 12:08:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 77 conjunts are in the unsatisfiable core [2022-02-15 12:08:07,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-15 12:08:08,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-02-15 12:08:08,773 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-02-15 12:08:09,074 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 25 treesize of output 7 [2022-02-15 12:08:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:08:09,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-15 12:08:10,949 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~q_front~0 1))) (or (< .cse0 0) (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) (<= c_~n~0 .cse0) (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod (+ c_~C~0 c_~x~0) 4294967296)) (forall ((v_ArrVal_929 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_929) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0))))) is different from false [2022-02-15 12:08:10,974 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-02-15 12:08:10,974 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 55 treesize of output 55 [2022-02-15 12:08:10,980 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 34 treesize of output 28 [2022-02-15 12:08:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 12:08:27,440 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022777163] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-15 12:08:27,440 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-15 12:08:27,440 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 38, 37] total 106 [2022-02-15 12:08:27,440 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713571609] [2022-02-15 12:08:27,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-15 12:08:27,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-02-15 12:08:27,441 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 12:08:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-02-15 12:08:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=716, Invalid=10173, Unknown=35, NotChecked=206, Total=11130 [2022-02-15 12:08:27,444 INFO L87 Difference]: Start difference. First operand 4469 states and 11498 transitions. Second operand has 106 states, 106 states have (on average 3.339622641509434) internal successors, (354), 106 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 12:08:37,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 12:08:39,597 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~q_front~0 1))) (let ((.cse0 (< .cse3 0)) (.cse1 (<= c_~n~0 .cse3)) (.cse2 (and (= (mod (+ c_~C~0 c_~y~0) 4294967296) (mod c_~x~0 4294967296)) (forall ((v_ArrVal_929 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_929) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) c_~N~0))))) (and (or .cse0 (< (+ |c_thread1Thread1of1ForFork0_~i~0#1| 1) c_~N~0) .cse1 .cse2) (or .cse0 (< (+ |c_thread1Thread1of1ForFork0_#t~post1#1| 1) c_~N~0) .cse1 .cse2)))) is different from false [2022-02-15 12:08:55,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 12:09:02,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-02-15 12:09:44,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-02-15 12:10:18,070 WARN L228 SmtUtils]: Spent 30.78s on a formula simplification. DAG size of input: 122 DAG size of output: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-02-15 12:10:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-02-15 12:10:21,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 232 SyntacticMatches, 5 SemanticMatches, 243 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 20330 ImplicationChecksByTransitivity, 108.8s TimeCoverageRelationStatistics Valid=5085, Invalid=53678, Unknown=51, NotChecked=966, Total=59780 [2022-02-15 12:10:21,169 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 4444 mSDsluCounter, 15757 mSDsCounter, 0 mSdLazyCounter, 9350 mSolverCounterSat, 702 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4444 SdHoareTripleChecker+Valid, 14188 SdHoareTripleChecker+Invalid, 12077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 9350 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 2021 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-02-15 12:10:21,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4444 Valid, 14188 Invalid, 12077 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [702 Valid, 9350 Invalid, 4 Unknown, 2021 Unchecked, 22.7s Time] [2022-02-15 12:10:21,170 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-15 12:10:21,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-15 12:10:21,191 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-02-15 12:10:21,195 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 [2022-02-15 12:10:21,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-02-15 12:10:21,376 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4469states) and FLOYD_HOARE automaton (currently 162 states, 106 states before enhancement),while ReachableStatesComputation was computing reachable states (9471 states constructed, input type IntersectNwa). [2022-02-15 12:10:21,377 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-15 12:10:21,377 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-02-15 12:10:21,379 INFO L732 BasicCegarLoop]: Path program histogram: [24, 12, 2, 1, 1, 1] [2022-02-15 12:10:21,381 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 12:10:21,381 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 12:10:21,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:10:21 BasicIcfg [2022-02-15 12:10:21,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 12:10:21,382 INFO L158 Benchmark]: Toolchain (without parser) took 857414.67ms. Allocated memory was 249.6MB in the beginning and 677.4MB in the end (delta: 427.8MB). Free memory was 192.6MB in the beginning and 448.9MB in the end (delta: -256.3MB). Peak memory consumption was 173.0MB. Max. memory is 8.0GB. [2022-02-15 12:10:21,382 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 249.6MB. Free memory is still 208.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 12:10:21,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.52ms. Allocated memory was 249.6MB in the beginning and 380.6MB in the end (delta: 131.1MB). Free memory was 222.9MB in the beginning and 350.1MB in the end (delta: -127.3MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. [2022-02-15 12:10:21,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.02ms. Allocated memory is still 380.6MB. Free memory was 350.1MB in the beginning and 348.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 12:10:21,382 INFO L158 Benchmark]: Boogie Preprocessor took 27.89ms. Allocated memory is still 380.6MB. Free memory was 348.0MB in the beginning and 346.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 12:10:21,383 INFO L158 Benchmark]: RCFGBuilder took 384.38ms. Allocated memory is still 380.6MB. Free memory was 346.5MB in the beginning and 324.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-02-15 12:10:21,383 INFO L158 Benchmark]: TraceAbstraction took 856630.97ms. Allocated memory was 380.6MB in the beginning and 677.4MB in the end (delta: 296.7MB). Free memory was 324.5MB in the beginning and 448.9MB in the end (delta: -124.5MB). Peak memory consumption was 172.8MB. Max. memory is 8.0GB. [2022-02-15 12:10:21,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 249.6MB. Free memory is still 208.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 249.52ms. Allocated memory was 249.6MB in the beginning and 380.6MB in the end (delta: 131.1MB). Free memory was 222.9MB in the beginning and 350.1MB in the end (delta: -127.3MB). Peak memory consumption was 8.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 91.02ms. Allocated memory is still 380.6MB. Free memory was 350.1MB in the beginning and 348.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.89ms. Allocated memory is still 380.6MB. Free memory was 348.0MB in the beginning and 346.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 384.38ms. Allocated memory is still 380.6MB. Free memory was 346.5MB in the beginning and 324.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 856630.97ms. Allocated memory was 380.6MB in the beginning and 677.4MB in the end (delta: 296.7MB). Free memory was 324.5MB in the beginning and 448.9MB in the end (delta: -124.5MB). Peak memory consumption was 172.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4469states) and FLOYD_HOARE automaton (currently 162 states, 106 states before enhancement),while ReachableStatesComputation was computing reachable states (9471 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 100]: 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 (4469states) and FLOYD_HOARE automaton (currently 162 states, 106 states before enhancement),while ReachableStatesComputation was computing reachable states (9471 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 99]: 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 (4469states) and FLOYD_HOARE automaton (currently 162 states, 106 states before enhancement),while ReachableStatesComputation was computing reachable states (9471 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 159 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 856.5s, OverallIterations: 41, TraceHistogramMax: 2, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.2s, AutomataDifference: 532.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 65771 SdHoareTripleChecker+Valid, 83.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65771 mSDsluCounter, 247332 SdHoareTripleChecker+Invalid, 76.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 64136 IncrementalHoareTripleChecker+Unchecked, 260871 mSDsCounter, 4214 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84095 IncrementalHoareTripleChecker+Invalid, 152449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4214 mSolverCounterUnsat, 8102 mSDtfsCounter, 84095 mSolverCounterSat, 0.7s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10457 GetRequests, 5751 SyntacticMatches, 202 SemanticMatches, 4504 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 246870 ImplicationChecksByTransitivity, 649.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4469occurred in iteration=40, InterpolantAutomatonStates: 2563, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 40 MinimizatonAttempts, 40033 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 311.2s InterpolantComputationTime, 8594 NumberOfCodeBlocks, 8573 NumberOfCodeBlocksAsserted, 97 NumberOfCheckSat, 11942 ConstructedInterpolants, 1860 QuantifiedInterpolants, 285219 SizeOfPredicates, 945 NumberOfNonLiveVariables, 7952 ConjunctsInSsa, 1666 ConjunctsInUnsatCore, 93 InterpolantComputations, 15 PerfectInterpolantSequences, 112/1134 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