/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-channel-sum.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 17:18:50,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 17:18:50,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 17:18:50,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 17:18:50,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 17:18:50,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 17:18:50,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 17:18:50,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 17:18:50,310 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 17:18:50,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 17:18:50,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 17:18:50,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 17:18:50,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 17:18:50,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 17:18:50,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 17:18:50,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 17:18:50,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 17:18:50,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 17:18:50,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:18:50,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 17:18:50,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 17:18:50,314 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 17:18:50,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 17:18:50,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 17:18:50,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 17:18:50,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 17:18:50,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 17:18:50,473 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-03 17:18:50,473 INFO L275 PluginConnector]: CDTParser initialized [2022-03-03 17:18:50,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-03-03 17:18:50,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee88964c/c3d145059d9f47cfb8386ced7e0056e1/FLAGbbea000da [2022-03-03 17:18:50,845 INFO L306 CDTParser]: Found 1 translation units. [2022-03-03 17:18:50,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-channel-sum.wvr.c [2022-03-03 17:18:50,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee88964c/c3d145059d9f47cfb8386ced7e0056e1/FLAGbbea000da [2022-03-03 17:18:51,259 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee88964c/c3d145059d9f47cfb8386ced7e0056e1 [2022-03-03 17:18:51,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 17:18:51,261 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-03 17:18:51,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-03 17:18:51,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-03 17:18:51,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-03 17:18:51,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7084a3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51, skipping insertion in model container [2022-03-03 17:18:51,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-03 17:18:51,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-03 17:18:51,456 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-channel-sum.wvr.c[2947,2960] [2022-03-03 17:18:51,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:18:51,466 INFO L203 MainTranslator]: Completed pre-run [2022-03-03 17:18:51,482 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-channel-sum.wvr.c[2947,2960] [2022-03-03 17:18:51,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-03 17:18:51,496 INFO L208 MainTranslator]: Completed translation [2022-03-03 17:18:51,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51 WrapperNode [2022-03-03 17:18:51,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-03 17:18:51,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 17:18:51,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 17:18:51,497 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 17:18:51,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,532 INFO L137 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 151 [2022-03-03 17:18:51,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 17:18:51,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 17:18:51,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 17:18:51,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 17:18:51,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,566 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 17:18:51,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 17:18:51,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 17:18:51,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 17:18:51,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (1/1) ... [2022-03-03 17:18:51,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 17:18:51,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:18:51,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 17:18:51,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 17:18:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-03 17:18:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 17:18:51,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 17:18:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 17:18:51,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 17:18:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-03 17:18:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-03 17:18:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-03 17:18:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-03 17:18:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-03 17:18:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-03 17:18:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 17:18:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 17:18:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-03 17:18:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-03 17:18:51,636 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 17:18:51,715 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 17:18:51,717 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 17:18:51,989 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 17:18:52,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 17:18:52,068 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-03 17:18:52,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:18:52 BoogieIcfgContainer [2022-03-03 17:18:52,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 17:18:52,073 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 17:18:52,073 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 17:18:52,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 17:18:52,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 05:18:51" (1/3) ... [2022-03-03 17:18:52,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ec4ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:18:52, skipping insertion in model container [2022-03-03 17:18:52,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 05:18:51" (2/3) ... [2022-03-03 17:18:52,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ec4ff4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 05:18:52, skipping insertion in model container [2022-03-03 17:18:52,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 05:18:52" (3/3) ... [2022-03-03 17:18:52,078 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-channel-sum.wvr.c [2022-03-03 17:18:52,081 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 17:18:52,082 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 17:18:52,082 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 17:18:52,082 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 17:18:52,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,127 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,128 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,129 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,130 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,131 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,132 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,133 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,133 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,134 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,135 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,136 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,143 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,144 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,148 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,148 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,149 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,149 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,149 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,149 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~cond~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,149 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,151 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,152 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,152 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~flag~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,158 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,159 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-03 17:18:52,167 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 17:18:52,212 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 17:18:52,218 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 17:18:52,218 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 17:18:52,232 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 138 places, 142 transitions, 300 flow [2022-03-03 17:18:52,309 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:52,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:52,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-03-03 17:18:52,337 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:52,338 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] [2022-03-03 17:18:52,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash 183716022, now seen corresponding path program 1 times [2022-03-03 17:18:52,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:52,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365310257] [2022-03-03 17:18:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:52,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:52,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:52,537 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:52,537 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365310257] [2022-03-03 17:18:52,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365310257] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:18:52,538 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:18:52,538 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 17:18:52,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677307522] [2022-03-03 17:18:52,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:18:52,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-03-03 17:18:52,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-03-03 17:18:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:18:52,574 INFO L87 Difference]: Start difference. First operand has 1358 states, 1357 states have (on average 2.7818717759764184) internal successors, (3775), 1357 states have internal predecessors, (3775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:52,634 INFO L93 Difference]: Finished difference Result 1358 states and 3564 transitions. [2022-03-03 17:18:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-03-03 17:18:52,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-03-03 17:18:52,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:52,657 INFO L225 Difference]: With dead ends: 1358 [2022-03-03 17:18:52,657 INFO L226 Difference]: Without dead ends: 1293 [2022-03-03 17:18:52,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-03-03 17:18:52,662 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:52,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:18:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-03-03 17:18:52,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1293. [2022-03-03 17:18:52,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 2.624613003095975) internal successors, (3391), 1292 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 3391 transitions. [2022-03-03 17:18:52,758 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 3391 transitions. Word has length 87 [2022-03-03 17:18:52,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:52,758 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 3391 transitions. [2022-03-03 17:18:52,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 43.5) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:52,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 3391 transitions. [2022-03-03 17:18:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-03 17:18:52,764 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:52,764 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:18:52,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 17:18:52,764 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 611453624, now seen corresponding path program 1 times [2022-03-03 17:18:52,765 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:52,765 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459772867] [2022-03-03 17:18:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:52,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:52,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:52,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459772867] [2022-03-03 17:18:52,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459772867] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:18:52,970 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:18:52,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:18:52,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859731592] [2022-03-03 17:18:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:18:52,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:18:52,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:52,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:18:52,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:18:52,975 INFO L87 Difference]: Start difference. First operand 1293 states and 3391 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:53,071 INFO L93 Difference]: Finished difference Result 2395 states and 6374 transitions. [2022-03-03 17:18:53,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:18:53,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-03-03 17:18:53,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:53,082 INFO L225 Difference]: With dead ends: 2395 [2022-03-03 17:18:53,083 INFO L226 Difference]: Without dead ends: 2161 [2022-03-03 17:18:53,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-03 17:18:53,084 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 34 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:53,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 368 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:18:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-03-03 17:18:53,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1355. [2022-03-03 17:18:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 2.6299852289512557) internal successors, (3561), 1354 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 3561 transitions. [2022-03-03 17:18:53,130 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 3561 transitions. Word has length 88 [2022-03-03 17:18:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:53,132 INFO L470 AbstractCegarLoop]: Abstraction has 1355 states and 3561 transitions. [2022-03-03 17:18:53,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 3561 transitions. [2022-03-03 17:18:53,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-03-03 17:18:53,137 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:53,137 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] [2022-03-03 17:18:53,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 17:18:53,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash 423797772, now seen corresponding path program 1 times [2022-03-03 17:18:53,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:53,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850973215] [2022-03-03 17:18:53,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:53,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:53,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:53,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850973215] [2022-03-03 17:18:53,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850973215] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:18:53,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:18:53,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-03 17:18:53,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944903381] [2022-03-03 17:18:53,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:18:53,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-03 17:18:53,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:53,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-03 17:18:53,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:18:53,273 INFO L87 Difference]: Start difference. First operand 1355 states and 3561 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:53,315 INFO L93 Difference]: Finished difference Result 1268 states and 3355 transitions. [2022-03-03 17:18:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-03 17:18:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-03-03 17:18:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:53,324 INFO L225 Difference]: With dead ends: 1268 [2022-03-03 17:18:53,324 INFO L226 Difference]: Without dead ends: 1236 [2022-03-03 17:18:53,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-03 17:18:53,329 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 50 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:53,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 239 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:18:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2022-03-03 17:18:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1236. [2022-03-03 17:18:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 2.6582995951417003) internal successors, (3283), 1235 states have internal predecessors, (3283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 3283 transitions. [2022-03-03 17:18:53,386 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 3283 transitions. Word has length 103 [2022-03-03 17:18:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:53,386 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 3283 transitions. [2022-03-03 17:18:53,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 3283 transitions. [2022-03-03 17:18:53,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-03 17:18:53,389 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:53,389 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] [2022-03-03 17:18:53,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 17:18:53,389 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash -636542678, now seen corresponding path program 1 times [2022-03-03 17:18:53,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:53,390 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395657945] [2022-03-03 17:18:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:53,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:53,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:18:53,505 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:53,505 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395657945] [2022-03-03 17:18:53,505 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395657945] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:18:53,505 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:18:53,505 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 17:18:53,505 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466670199] [2022-03-03 17:18:53,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:18:53,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 17:18:53,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:53,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 17:18:53,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:18:53,506 INFO L87 Difference]: Start difference. First operand 1236 states and 3283 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:53,533 INFO L93 Difference]: Finished difference Result 1303 states and 3465 transitions. [2022-03-03 17:18:53,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 17:18:53,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-03-03 17:18:53,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:53,539 INFO L225 Difference]: With dead ends: 1303 [2022-03-03 17:18:53,539 INFO L226 Difference]: Without dead ends: 1303 [2022-03-03 17:18:53,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 17:18:53,543 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 26 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:53,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 220 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:18:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2022-03-03 17:18:53,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1220. [2022-03-03 17:18:53,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 1219 states have (on average 2.657095980311731) internal successors, (3239), 1219 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 3239 transitions. [2022-03-03 17:18:53,570 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 3239 transitions. Word has length 110 [2022-03-03 17:18:53,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:53,570 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 3239 transitions. [2022-03-03 17:18:53,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 3239 transitions. [2022-03-03 17:18:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-03 17:18:53,574 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:53,574 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] [2022-03-03 17:18:53,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 17:18:53,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:53,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1002661117, now seen corresponding path program 1 times [2022-03-03 17:18:53,575 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:53,575 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268545281] [2022-03-03 17:18:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:53,713 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:53,713 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268545281] [2022-03-03 17:18:53,713 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268545281] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 17:18:53,713 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 17:18:53,713 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-03 17:18:53,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496484191] [2022-03-03 17:18:53,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 17:18:53,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-03 17:18:53,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:53,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-03 17:18:53,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:18:53,714 INFO L87 Difference]: Start difference. First operand 1220 states and 3239 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:53,756 INFO L93 Difference]: Finished difference Result 1272 states and 3334 transitions. [2022-03-03 17:18:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-03 17:18:53,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-03-03 17:18:53,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:53,761 INFO L225 Difference]: With dead ends: 1272 [2022-03-03 17:18:53,761 INFO L226 Difference]: Without dead ends: 1186 [2022-03-03 17:18:53,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-03 17:18:53,761 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 69 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:53,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 314 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 17:18:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2022-03-03 17:18:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2022-03-03 17:18:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 2.6582278481012658) internal successors, (3150), 1185 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 3150 transitions. [2022-03-03 17:18:53,792 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 3150 transitions. Word has length 110 [2022-03-03 17:18:53,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:53,793 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 3150 transitions. [2022-03-03 17:18:53,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:53,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 3150 transitions. [2022-03-03 17:18:53,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-03-03 17:18:53,795 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:53,795 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] [2022-03-03 17:18:53,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 17:18:53,796 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1152534637, now seen corresponding path program 2 times [2022-03-03 17:18:53,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:53,797 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582085573] [2022-03-03 17:18:53,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:53,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:53,959 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:53,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582085573] [2022-03-03 17:18:53,959 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582085573] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:18:53,959 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000373934] [2022-03-03 17:18:53,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:18:53,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:18:53,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:18:53,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:18:53,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 17:18:54,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:18:54,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:18:54,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 17:18:54,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:18:54,314 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:54,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:18:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:54,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000373934] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:18:54,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:18:54,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-03-03 17:18:54,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648592673] [2022-03-03 17:18:54,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:18:54,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-03 17:18:54,536 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:54,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-03 17:18:54,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-03-03 17:18:54,537 INFO L87 Difference]: Start difference. First operand 1186 states and 3150 transitions. Second operand has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:54,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:18:54,689 INFO L93 Difference]: Finished difference Result 1223 states and 3196 transitions. [2022-03-03 17:18:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 17:18:54,690 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-03-03 17:18:54,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:18:54,694 INFO L225 Difference]: With dead ends: 1223 [2022-03-03 17:18:54,694 INFO L226 Difference]: Without dead ends: 1192 [2022-03-03 17:18:54,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2022-03-03 17:18:54,695 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 334 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 17:18:54,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 733 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 17:18:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2022-03-03 17:18:54,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1187. [2022-03-03 17:18:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.6568296795952784) internal successors, (3151), 1186 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 3151 transitions. [2022-03-03 17:18:54,715 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 3151 transitions. Word has length 110 [2022-03-03 17:18:54,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:18:54,716 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 3151 transitions. [2022-03-03 17:18:54,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.133333333333333) internal successors, (182), 15 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:18:54,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 3151 transitions. [2022-03-03 17:18:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-03-03 17:18:54,719 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:18:54,719 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] [2022-03-03 17:18:54,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 17:18:54,927 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,SelfDestructingSolverStorable5 [2022-03-03 17:18:54,928 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:18:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:18:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1523617637, now seen corresponding path program 1 times [2022-03-03 17:18:54,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:18:54,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740072090] [2022-03-03 17:18:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:54,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:18:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:18:55,044 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:18:55,044 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740072090] [2022-03-03 17:18:55,044 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740072090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:18:55,045 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515666581] [2022-03-03 17:18:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:18:55,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:18:55,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:18:55,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:18:55,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 17:18:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:18:55,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2022-03-03 17:18:55,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:18:55,644 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:18:55,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:18:56,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:18:56,400 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-03-03 17:18:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:56,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:18:57,756 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:18:57,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-03-03 17:18:57,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:18:57,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 462 [2022-03-03 17:18:57,778 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:18:57,778 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 426 [2022-03-03 17:18:57,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:18:57,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 410 treesize of output 354 [2022-03-03 17:18:58,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:18:58,666 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515666581] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:18:58,666 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:18:58,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 28, 25] total 52 [2022-03-03 17:18:58,667 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913045156] [2022-03-03 17:18:58,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:18:58,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-03-03 17:18:58,668 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:18:58,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-03-03 17:18:58,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2150, Unknown=34, NotChecked=0, Total=2652 [2022-03-03 17:18:58,669 INFO L87 Difference]: Start difference. First operand 1187 states and 3151 transitions. Second operand has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:01,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:01,287 INFO L93 Difference]: Finished difference Result 3877 states and 10601 transitions. [2022-03-03 17:19:01,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 17:19:01,288 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 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 117 [2022-03-03 17:19:01,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:01,303 INFO L225 Difference]: With dead ends: 3877 [2022-03-03 17:19:01,304 INFO L226 Difference]: Without dead ends: 3661 [2022-03-03 17:19:01,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 192 SyntacticMatches, 10 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2808 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1517, Invalid=7379, Unknown=34, NotChecked=0, Total=8930 [2022-03-03 17:19:01,307 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1579 mSDsluCounter, 4206 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 4216 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 657 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:01,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 4216 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1984 Invalid, 0 Unknown, 657 Unchecked, 0.9s Time] [2022-03-03 17:19:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2022-03-03 17:19:01,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 2485. [2022-03-03 17:19:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 2.7355072463768115) internal successors, (6795), 2484 states have internal predecessors, (6795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:01,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 6795 transitions. [2022-03-03 17:19:01,373 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 6795 transitions. Word has length 117 [2022-03-03 17:19:01,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:01,374 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 6795 transitions. [2022-03-03 17:19:01,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.653846153846154) internal successors, (294), 52 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:01,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 6795 transitions. [2022-03-03 17:19:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-03-03 17:19:01,380 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:01,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 17:19:01,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:01,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-03-03 17:19:01,596 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:01,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:01,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2095775547, now seen corresponding path program 2 times [2022-03-03 17:19:01,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:01,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54168768] [2022-03-03 17:19:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-03 17:19:01,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:01,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54168768] [2022-03-03 17:19:01,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54168768] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:01,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787807511] [2022-03-03 17:19:01,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:19:01,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:01,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:01,694 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:01,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 17:19:01,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:19:01,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:01,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-03 17:19:01,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:02,190 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:02,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:02,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787807511] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:02,587 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:02,587 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 15] total 29 [2022-03-03 17:19:02,587 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856985275] [2022-03-03 17:19:02,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:02,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-03 17:19:02,587 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-03 17:19:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-03-03 17:19:02,588 INFO L87 Difference]: Start difference. First operand 2485 states and 6795 transitions. Second operand has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:03,925 INFO L93 Difference]: Finished difference Result 5822 states and 15827 transitions. [2022-03-03 17:19:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 17:19:03,926 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 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 132 [2022-03-03 17:19:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:03,943 INFO L225 Difference]: With dead ends: 5822 [2022-03-03 17:19:03,943 INFO L226 Difference]: Without dead ends: 4195 [2022-03-03 17:19:03,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=891, Invalid=3269, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 17:19:03,945 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 1024 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 1322 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:03,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1024 Valid, 3622 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-03 17:19:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2022-03-03 17:19:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 3782. [2022-03-03 17:19:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3782 states, 3781 states have (on average 2.7799523935466808) internal successors, (10511), 3781 states have internal predecessors, (10511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:04,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3782 states to 3782 states and 10511 transitions. [2022-03-03 17:19:04,037 INFO L78 Accepts]: Start accepts. Automaton has 3782 states and 10511 transitions. Word has length 132 [2022-03-03 17:19:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:04,037 INFO L470 AbstractCegarLoop]: Abstraction has 3782 states and 10511 transitions. [2022-03-03 17:19:04,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.137931034482758) internal successors, (265), 29 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3782 states and 10511 transitions. [2022-03-03 17:19:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:19:04,046 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:04,046 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:19:04,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:04,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:04,259 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:04,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:04,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1550321171, now seen corresponding path program 1 times [2022-03-03 17:19:04,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:04,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300214742] [2022-03-03 17:19:04,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:04,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:19:04,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:04,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300214742] [2022-03-03 17:19:04,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300214742] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:04,581 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168657166] [2022-03-03 17:19:04,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:04,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:04,582 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:04,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 17:19:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:04,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-03 17:19:04,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:05,284 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:19:05,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:19:05,671 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:19:06,594 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:19:06,595 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 53 treesize of output 19 [2022-03-03 17:19:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:06,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:09,094 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:19:09,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-03-03 17:19:09,122 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:19:09,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 385 [2022-03-03 17:19:09,159 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:19:09,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-03-03 17:19:09,201 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:19:09,201 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-03-03 17:19:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:12,386 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168657166] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:12,386 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:12,386 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37, 34] total 77 [2022-03-03 17:19:12,387 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462549615] [2022-03-03 17:19:12,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:12,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-03 17:19:12,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-03 17:19:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=786, Invalid=5021, Unknown=45, NotChecked=0, Total=5852 [2022-03-03 17:19:12,390 INFO L87 Difference]: Start difference. First operand 3782 states and 10511 transitions. Second operand has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:46,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:19:46,446 INFO L93 Difference]: Finished difference Result 25055 states and 70372 transitions. [2022-03-03 17:19:46,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 404 states. [2022-03-03 17:19:46,446 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-03-03 17:19:46,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:19:46,511 INFO L225 Difference]: With dead ends: 25055 [2022-03-03 17:19:46,512 INFO L226 Difference]: Without dead ends: 22979 [2022-03-03 17:19:46,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 229 SyntacticMatches, 6 SemanticMatches, 469 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97674 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=23130, Invalid=198195, Unknown=45, NotChecked=0, Total=221370 [2022-03-03 17:19:46,531 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 5800 mSDsluCounter, 17137 mSDsCounter, 0 mSdLazyCounter, 8807 mSolverCounterSat, 523 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5800 SdHoareTripleChecker+Valid, 16991 SdHoareTripleChecker+Invalid, 14392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 523 IncrementalHoareTripleChecker+Valid, 8807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5062 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-03-03 17:19:46,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5800 Valid, 16991 Invalid, 14392 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [523 Valid, 8807 Invalid, 0 Unknown, 5062 Unchecked, 4.5s Time] [2022-03-03 17:19:46,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22979 states. [2022-03-03 17:19:46,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22979 to 5984. [2022-03-03 17:19:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5984 states, 5983 states have (on average 2.8034430887514623) internal successors, (16773), 5983 states have internal predecessors, (16773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5984 states to 5984 states and 16773 transitions. [2022-03-03 17:19:46,825 INFO L78 Accepts]: Start accepts. Automaton has 5984 states and 16773 transitions. Word has length 146 [2022-03-03 17:19:46,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:19:46,825 INFO L470 AbstractCegarLoop]: Abstraction has 5984 states and 16773 transitions. [2022-03-03 17:19:46,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:19:46,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5984 states and 16773 transitions. [2022-03-03 17:19:46,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:19:46,837 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:19:46,837 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:19:46,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 17:19:47,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:47,051 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:19:47,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:19:47,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1190395005, now seen corresponding path program 2 times [2022-03-03 17:19:47,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:19:47,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873395337] [2022-03-03 17:19:47,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:19:47,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:19:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:19:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:48,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:19:48,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873395337] [2022-03-03 17:19:48,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873395337] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:19:48,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122027374] [2022-03-03 17:19:48,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:19:48,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:19:48,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:19:48,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:19:48,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 17:19:48,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:19:48,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:19:48,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 17:19:48,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:19:50,656 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-03-03 17:19:50,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 25 [2022-03-03 17:19:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:50,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:19:51,846 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:19:51,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-03-03 17:19:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:19:53,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122027374] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:19:53,955 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:19:53,955 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 28, 28] total 81 [2022-03-03 17:19:53,955 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206821943] [2022-03-03 17:19:53,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:19:53,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-03 17:19:53,956 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:19:53,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-03 17:19:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=6057, Unknown=0, NotChecked=0, Total=6480 [2022-03-03 17:19:53,957 INFO L87 Difference]: Start difference. First operand 5984 states and 16773 transitions. Second operand has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:16,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:20:16,153 INFO L93 Difference]: Finished difference Result 29431 states and 81646 transitions. [2022-03-03 17:20:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2022-03-03 17:20:16,153 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 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 146 [2022-03-03 17:20:16,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:20:16,232 INFO L225 Difference]: With dead ends: 29431 [2022-03-03 17:20:16,233 INFO L226 Difference]: Without dead ends: 28727 [2022-03-03 17:20:16,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 309 SyntacticMatches, 23 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45004 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=7551, Invalid=112511, Unknown=0, NotChecked=0, Total=120062 [2022-03-03 17:20:16,238 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 4110 mSDsluCounter, 20836 mSDsCounter, 0 mSdLazyCounter, 7069 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4110 SdHoareTripleChecker+Valid, 20580 SdHoareTripleChecker+Invalid, 12432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 7069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5109 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:20:16,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4110 Valid, 20580 Invalid, 12432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 7069 Invalid, 0 Unknown, 5109 Unchecked, 3.3s Time] [2022-03-03 17:20:16,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28727 states. [2022-03-03 17:20:16,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28727 to 11266. [2022-03-03 17:20:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11266 states, 11265 states have (on average 2.85468264536174) internal successors, (32158), 11265 states have internal predecessors, (32158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11266 states to 11266 states and 32158 transitions. [2022-03-03 17:20:16,598 INFO L78 Accepts]: Start accepts. Automaton has 11266 states and 32158 transitions. Word has length 146 [2022-03-03 17:20:16,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:20:16,598 INFO L470 AbstractCegarLoop]: Abstraction has 11266 states and 32158 transitions. [2022-03-03 17:20:16,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.6419753086419755) internal successors, (376), 81 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:20:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 11266 states and 32158 transitions. [2022-03-03 17:20:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:20:16,628 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:20:16,629 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:20:16,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 17:20:16,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-03 17:20:16,849 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:20:16,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:20:16,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1940002337, now seen corresponding path program 3 times [2022-03-03 17:20:16,850 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:20:16,850 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576810244] [2022-03-03 17:20:16,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:20:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:20:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:20:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:18,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:20:18,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576810244] [2022-03-03 17:20:18,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576810244] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:20:18,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289547838] [2022-03-03 17:20:18,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:20:18,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:20:18,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:20:18,100 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:20:18,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 17:20:18,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:20:18,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:20:18,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-03 17:20:18,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:20:18,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:20:18,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:20:19,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:20:19,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:20:21,787 INFO L353 Elim1Store]: treesize reduction 82, result has 18.0 percent of original size [2022-03-03 17:20:21,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 36 [2022-03-03 17:20:22,200 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:22,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:20:41,053 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-03-03 17:20:41,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 143 [2022-03-03 17:20:41,111 INFO L353 Elim1Store]: treesize reduction 101, result has 37.3 percent of original size [2022-03-03 17:20:41,111 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 805 treesize of output 760 [2022-03-03 17:20:41,153 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-03-03 17:20:41,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 688 treesize of output 632 [2022-03-03 17:20:41,191 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-03-03 17:20:41,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 616 treesize of output 488 [2022-03-03 17:20:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:20:44,847 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289547838] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:20:44,847 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:20:44,847 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 43, 41] total 108 [2022-03-03 17:20:44,847 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791239277] [2022-03-03 17:20:44,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:20:44,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-03-03 17:20:44,849 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:20:44,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-03-03 17:20:44,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1108, Invalid=10385, Unknown=63, NotChecked=0, Total=11556 [2022-03-03 17:20:44,850 INFO L87 Difference]: Start difference. First operand 11266 states and 32158 transitions. Second operand has 108 states, 108 states have (on average 3.6018518518518516) internal successors, (389), 108 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:24:03,834 INFO L93 Difference]: Finished difference Result 29415 states and 82173 transitions. [2022-03-03 17:24:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-03-03 17:24:03,834 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 108 states have (on average 3.6018518518518516) internal successors, (389), 108 states have internal predecessors, (389), 0 states have call successors, (0), 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 146 [2022-03-03 17:24:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:24:03,935 INFO L225 Difference]: With dead ends: 29415 [2022-03-03 17:24:03,936 INFO L226 Difference]: Without dead ends: 28289 [2022-03-03 17:24:03,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 248 SyntacticMatches, 15 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 13875 ImplicationChecksByTransitivity, 202.2s TimeCoverageRelationStatistics Valid=4312, Invalid=39859, Unknown=139, NotChecked=0, Total=44310 [2022-03-03 17:24:03,938 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 4317 mSDsluCounter, 15818 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4317 SdHoareTripleChecker+Valid, 15621 SdHoareTripleChecker+Invalid, 7192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4408 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 17:24:03,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4317 Valid, 15621 Invalid, 7192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2706 Invalid, 0 Unknown, 4408 Unchecked, 1.2s Time] [2022-03-03 17:24:03,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28289 states. [2022-03-03 17:24:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28289 to 16892. [2022-03-03 17:24:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16892 states, 16891 states have (on average 2.856846841513232) internal successors, (48255), 16891 states have internal predecessors, (48255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:04,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16892 states to 16892 states and 48255 transitions. [2022-03-03 17:24:04,371 INFO L78 Accepts]: Start accepts. Automaton has 16892 states and 48255 transitions. Word has length 146 [2022-03-03 17:24:04,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:24:04,371 INFO L470 AbstractCegarLoop]: Abstraction has 16892 states and 48255 transitions. [2022-03-03 17:24:04,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 108 states have (on average 3.6018518518518516) internal successors, (389), 108 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:24:04,372 INFO L276 IsEmpty]: Start isEmpty. Operand 16892 states and 48255 transitions. [2022-03-03 17:24:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:24:04,407 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:24:04,407 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:24:04,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 17:24:04,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:04,612 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:24:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:24:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1413457919, now seen corresponding path program 4 times [2022-03-03 17:24:04,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:24:04,612 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954044973] [2022-03-03 17:24:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:24:04,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:24:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:24:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:05,999 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:24:05,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954044973] [2022-03-03 17:24:05,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954044973] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:24:05,999 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259834596] [2022-03-03 17:24:05,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 17:24:05,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:24:06,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:24:06,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:24:06,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 17:24:06,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 17:24:06,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:24:06,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 85 conjunts are in the unsatisfiable core [2022-03-03 17:24:06,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:24:06,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:24:06,134 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-03-03 17:24:06,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-03-03 17:24:06,484 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-03-03 17:24:06,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2022-03-03 17:24:06,669 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:24:06,837 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:24:07,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:24:07,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:24:08,611 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:24:08,611 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 49 treesize of output 15 [2022-03-03 17:24:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:08,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:24:12,127 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-03-03 17:24:12,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 138 [2022-03-03 17:24:12,166 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:24:12,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 808 treesize of output 758 [2022-03-03 17:24:12,210 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:24:12,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 706 treesize of output 602 [2022-03-03 17:24:12,253 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:24:12,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 550 treesize of output 524 [2022-03-03 17:24:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:24:15,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259834596] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:24:15,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:24:15,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 37, 37] total 96 [2022-03-03 17:24:15,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675789897] [2022-03-03 17:24:15,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:24:15,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-03-03 17:24:15,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:24:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-03-03 17:24:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=957, Invalid=8101, Unknown=62, NotChecked=0, Total=9120 [2022-03-03 17:24:15,853 INFO L87 Difference]: Start difference. First operand 16892 states and 48255 transitions. Second operand has 96 states, 96 states have (on average 3.96875) internal successors, (381), 96 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:11,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:25:11,860 INFO L93 Difference]: Finished difference Result 67071 states and 190031 transitions. [2022-03-03 17:25:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2022-03-03 17:25:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.96875) internal successors, (381), 96 states have internal predecessors, (381), 0 states have call successors, (0), 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 146 [2022-03-03 17:25:11,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:25:12,030 INFO L225 Difference]: With dead ends: 67071 [2022-03-03 17:25:12,030 INFO L226 Difference]: Without dead ends: 65483 [2022-03-03 17:25:12,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 849 GetRequests, 254 SyntacticMatches, 17 SemanticMatches, 578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144655 ImplicationChecksByTransitivity, 50.4s TimeCoverageRelationStatistics Valid=32348, Invalid=303326, Unknown=146, NotChecked=0, Total=335820 [2022-03-03 17:25:12,046 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 5544 mSDsluCounter, 23883 mSDsCounter, 0 mSdLazyCounter, 9776 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5544 SdHoareTripleChecker+Valid, 23935 SdHoareTripleChecker+Invalid, 21523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 9776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11253 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:25:12,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5544 Valid, 23935 Invalid, 21523 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [494 Valid, 9776 Invalid, 0 Unknown, 11253 Unchecked, 5.7s Time] [2022-03-03 17:25:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65483 states. [2022-03-03 17:25:12,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65483 to 16117. [2022-03-03 17:25:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16117 states, 16116 states have (on average 2.874162323157111) internal successors, (46320), 16116 states have internal predecessors, (46320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:12,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 46320 transitions. [2022-03-03 17:25:12,920 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 46320 transitions. Word has length 146 [2022-03-03 17:25:12,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:25:12,921 INFO L470 AbstractCegarLoop]: Abstraction has 16117 states and 46320 transitions. [2022-03-03 17:25:12,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.96875) internal successors, (381), 96 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:12,921 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 46320 transitions. [2022-03-03 17:25:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:25:12,948 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:25:12,948 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:25:12,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-03 17:25:13,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:13,163 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:25:13,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:25:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash -415489819, now seen corresponding path program 5 times [2022-03-03 17:25:13,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:25:13,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765765117] [2022-03-03 17:25:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:25:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:25:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:14,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:25:14,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765765117] [2022-03-03 17:25:14,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765765117] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:25:14,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159432748] [2022-03-03 17:25:14,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 17:25:14,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:14,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:25:14,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:25:14,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 17:25:14,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 17:25:14,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:25:14,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-03 17:25:14,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:17,053 INFO L353 Elim1Store]: treesize reduction 96, result has 6.8 percent of original size [2022-03-03 17:25:17,054 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 21 [2022-03-03 17:25:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:17,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:18,391 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:25:18,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-03-03 17:25:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:20,761 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159432748] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:25:20,761 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:25:20,761 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 30, 29] total 84 [2022-03-03 17:25:20,761 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833186865] [2022-03-03 17:25:20,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:25:20,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-03-03 17:25:20,761 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:25:20,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-03-03 17:25:20,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=6413, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 17:25:20,762 INFO L87 Difference]: Start difference. First operand 16117 states and 46320 transitions. Second operand has 84 states, 84 states have (on average 4.5) internal successors, (378), 84 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:25:40,111 INFO L93 Difference]: Finished difference Result 31621 states and 89400 transitions. [2022-03-03 17:25:40,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 220 states. [2022-03-03 17:25:40,111 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.5) internal successors, (378), 84 states have internal predecessors, (378), 0 states have call successors, (0), 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 146 [2022-03-03 17:25:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:25:40,175 INFO L225 Difference]: With dead ends: 31621 [2022-03-03 17:25:40,176 INFO L226 Difference]: Without dead ends: 31381 [2022-03-03 17:25:40,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 276 SyntacticMatches, 36 SemanticMatches, 260 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26201 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=5203, Invalid=63179, Unknown=0, NotChecked=0, Total=68382 [2022-03-03 17:25:40,179 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 3794 mSDsluCounter, 18070 mSDsCounter, 0 mSdLazyCounter, 5282 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3794 SdHoareTripleChecker+Valid, 18064 SdHoareTripleChecker+Invalid, 9693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 5282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4135 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:25:40,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3794 Valid, 18064 Invalid, 9693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 5282 Invalid, 0 Unknown, 4135 Unchecked, 2.6s Time] [2022-03-03 17:25:40,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31381 states. [2022-03-03 17:25:40,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31381 to 21639. [2022-03-03 17:25:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21639 states, 21638 states have (on average 2.893936593030779) internal successors, (62619), 21638 states have internal predecessors, (62619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:40,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21639 states to 21639 states and 62619 transitions. [2022-03-03 17:25:40,635 INFO L78 Accepts]: Start accepts. Automaton has 21639 states and 62619 transitions. Word has length 146 [2022-03-03 17:25:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:25:40,635 INFO L470 AbstractCegarLoop]: Abstraction has 21639 states and 62619 transitions. [2022-03-03 17:25:40,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.5) internal successors, (378), 84 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:25:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21639 states and 62619 transitions. [2022-03-03 17:25:40,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:25:40,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:25:40,779 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:25:40,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 17:25:40,991 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,SelfDestructingSolverStorable12 [2022-03-03 17:25:40,991 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:25:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:25:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 210734853, now seen corresponding path program 6 times [2022-03-03 17:25:40,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:25:40,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761022802] [2022-03-03 17:25:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:25:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:25:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:25:41,291 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:25:41,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:25:41,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761022802] [2022-03-03 17:25:41,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761022802] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:25:41,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624114448] [2022-03-03 17:25:41,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 17:25:41,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:25:41,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:25:41,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:25:41,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 17:25:41,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 17:25:41,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:25:41,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 78 conjunts are in the unsatisfiable core [2022-03-03 17:25:41,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:25:42,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:25:42,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:25:42,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:25:43,497 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-03-03 17:25:43,497 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 49 treesize of output 15 [2022-03-03 17:25:43,569 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:43,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:25:46,086 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:25:46,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-03-03 17:25:46,121 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:25:46,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 385 [2022-03-03 17:25:46,157 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:25:46,158 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-03-03 17:25:46,198 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-03-03 17:25:46,198 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-03-03 17:25:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:25:49,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624114448] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:25:49,591 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:25:49,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 39, 36] total 81 [2022-03-03 17:25:49,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697697879] [2022-03-03 17:25:49,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:25:49,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-03-03 17:25:49,592 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:25:49,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-03-03 17:25:49,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=858, Invalid=5574, Unknown=48, NotChecked=0, Total=6480 [2022-03-03 17:25:49,593 INFO L87 Difference]: Start difference. First operand 21639 states and 62619 transitions. Second operand has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:54,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:26:54,668 INFO L93 Difference]: Finished difference Result 73965 states and 210747 transitions. [2022-03-03 17:26:54,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 611 states. [2022-03-03 17:26:54,668 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-03-03 17:26:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:26:54,939 INFO L225 Difference]: With dead ends: 73965 [2022-03-03 17:26:54,939 INFO L226 Difference]: Without dead ends: 71287 [2022-03-03 17:26:54,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 926 GetRequests, 249 SyntacticMatches, 10 SemanticMatches, 667 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207011 ImplicationChecksByTransitivity, 57.0s TimeCoverageRelationStatistics Valid=41873, Invalid=404971, Unknown=48, NotChecked=0, Total=446892 [2022-03-03 17:26:54,956 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 6488 mSDsluCounter, 19525 mSDsCounter, 0 mSdLazyCounter, 10613 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6488 SdHoareTripleChecker+Valid, 19532 SdHoareTripleChecker+Invalid, 16671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 10613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5248 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-03-03 17:26:54,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6488 Valid, 19532 Invalid, 16671 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [810 Valid, 10613 Invalid, 0 Unknown, 5248 Unchecked, 6.6s Time] [2022-03-03 17:26:55,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71287 states. [2022-03-03 17:26:55,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71287 to 24670. [2022-03-03 17:26:55,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24670 states, 24669 states have (on average 2.9074952369370464) internal successors, (71725), 24669 states have internal predecessors, (71725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24670 states to 24670 states and 71725 transitions. [2022-03-03 17:26:55,835 INFO L78 Accepts]: Start accepts. Automaton has 24670 states and 71725 transitions. Word has length 146 [2022-03-03 17:26:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:26:55,835 INFO L470 AbstractCegarLoop]: Abstraction has 24670 states and 71725 transitions. [2022-03-03 17:26:55,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.617283950617284) internal successors, (374), 81 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:26:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 24670 states and 71725 transitions. [2022-03-03 17:26:55,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:26:55,873 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:26:55,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:26:55,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 17:26:56,087 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,SelfDestructingSolverStorable13 [2022-03-03 17:26:56,087 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:26:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:26:56,088 INFO L85 PathProgramCache]: Analyzing trace with hash 223607271, now seen corresponding path program 7 times [2022-03-03 17:26:56,088 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:26:56,088 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133839315] [2022-03-03 17:26:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:26:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:26:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:26:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:26:56,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:26:56,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133839315] [2022-03-03 17:26:56,551 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133839315] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:26:56,551 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709660826] [2022-03-03 17:26:56,551 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 17:26:56,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:26:56,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:26:56,553 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:26:56,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 17:26:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:26:56,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 59 conjunts are in the unsatisfiable core [2022-03-03 17:26:56,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:26:58,437 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-03-03 17:26:58,437 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 25 [2022-03-03 17:26:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:26:58,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:26:59,453 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:26:59,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-03-03 17:27:01,575 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:01,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709660826] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:01,576 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:01,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 28, 28] total 62 [2022-03-03 17:27:01,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079068716] [2022-03-03 17:27:01,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:01,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-03 17:27:01,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:01,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-03 17:27:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=3345, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 17:27:01,577 INFO L87 Difference]: Start difference. First operand 24670 states and 71725 transitions. Second operand has 62 states, 62 states have (on average 5.951612903225806) internal successors, (369), 62 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:10,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:27:10,864 INFO L93 Difference]: Finished difference Result 41999 states and 119249 transitions. [2022-03-03 17:27:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-03-03 17:27:10,864 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.951612903225806) internal successors, (369), 62 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-03-03 17:27:10,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:27:10,957 INFO L225 Difference]: With dead ends: 41999 [2022-03-03 17:27:10,957 INFO L226 Difference]: Without dead ends: 41182 [2022-03-03 17:27:10,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 271 SyntacticMatches, 9 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 17730 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4856, Invalid=39876, Unknown=0, NotChecked=0, Total=44732 [2022-03-03 17:27:10,961 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 2271 mSDsluCounter, 10697 mSDsCounter, 0 mSdLazyCounter, 3181 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 10782 SdHoareTripleChecker+Invalid, 4755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 3181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1351 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 17:27:10,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2271 Valid, 10782 Invalid, 4755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 3181 Invalid, 0 Unknown, 1351 Unchecked, 1.7s Time] [2022-03-03 17:27:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41182 states. [2022-03-03 17:27:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41182 to 28028. [2022-03-03 17:27:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28028 states, 28027 states have (on average 2.9034859242872946) internal successors, (81376), 28027 states have internal predecessors, (81376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:11,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28028 states to 28028 states and 81376 transitions. [2022-03-03 17:27:11,636 INFO L78 Accepts]: Start accepts. Automaton has 28028 states and 81376 transitions. Word has length 146 [2022-03-03 17:27:11,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:27:11,637 INFO L470 AbstractCegarLoop]: Abstraction has 28028 states and 81376 transitions. [2022-03-03 17:27:11,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.951612903225806) internal successors, (369), 62 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:11,637 INFO L276 IsEmpty]: Start isEmpty. Operand 28028 states and 81376 transitions. [2022-03-03 17:27:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:27:11,683 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:27:11,683 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:27:11,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 17:27:11,886 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,SelfDestructingSolverStorable14 [2022-03-03 17:27:11,886 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:27:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:27:11,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1063240453, now seen corresponding path program 8 times [2022-03-03 17:27:11,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:27:11,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405175445] [2022-03-03 17:27:11,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:27:11,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:27:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:27:12,157 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:27:12,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405175445] [2022-03-03 17:27:12,157 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405175445] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:27:12,157 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322420720] [2022-03-03 17:27:12,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 17:27:12,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:12,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:27:12,159 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:27:12,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 17:27:12,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 17:27:12,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:27:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 76 conjunts are in the unsatisfiable core [2022-03-03 17:27:12,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:27:12,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:27:13,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:27:13,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:27:14,823 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-03-03 17:27:14,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 21 [2022-03-03 17:27:14,890 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:14,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:27:20,450 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-03 17:27:20,450 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 124 [2022-03-03 17:27:20,489 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:27:20,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 380 treesize of output 382 [2022-03-03 17:27:20,531 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:27:20,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 330 treesize of output 306 [2022-03-03 17:27:20,574 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-03-03 17:27:20,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 254 treesize of output 268 [2022-03-03 17:27:27,454 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:27,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322420720] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:27:27,455 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:27:27,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37, 34] total 77 [2022-03-03 17:27:27,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328320993] [2022-03-03 17:27:27,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:27:27,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-03-03 17:27:27,455 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:27:27,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-03-03 17:27:27,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=587, Invalid=5226, Unknown=39, NotChecked=0, Total=5852 [2022-03-03 17:27:27,456 INFO L87 Difference]: Start difference. First operand 28028 states and 81376 transitions. Second operand has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:33,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 17:27:33,799 INFO L93 Difference]: Finished difference Result 38040 states and 109016 transitions. [2022-03-03 17:27:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-03-03 17:27:33,800 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-03-03 17:27:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 17:27:33,877 INFO L225 Difference]: With dead ends: 38040 [2022-03-03 17:27:33,877 INFO L226 Difference]: Without dead ends: 37800 [2022-03-03 17:27:33,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 239 SyntacticMatches, 8 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 9093 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2518, Invalid=24503, Unknown=39, NotChecked=0, Total=27060 [2022-03-03 17:27:33,879 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 2063 mSDsluCounter, 10846 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 10685 SdHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1944 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 17:27:33,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2063 Valid, 10685 Invalid, 4702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2625 Invalid, 0 Unknown, 1944 Unchecked, 1.3s Time] [2022-03-03 17:27:33,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37800 states. [2022-03-03 17:27:34,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37800 to 30730. [2022-03-03 17:27:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30730 states, 30729 states have (on average 2.9148686908132384) internal successors, (89571), 30729 states have internal predecessors, (89571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:34,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30730 states to 30730 states and 89571 transitions. [2022-03-03 17:27:34,544 INFO L78 Accepts]: Start accepts. Automaton has 30730 states and 89571 transitions. Word has length 146 [2022-03-03 17:27:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 17:27:34,545 INFO L470 AbstractCegarLoop]: Abstraction has 30730 states and 89571 transitions. [2022-03-03 17:27:34,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 4.857142857142857) internal successors, (374), 77 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:27:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 30730 states and 89571 transitions. [2022-03-03 17:27:34,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-03-03 17:27:34,670 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 17:27:34,671 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-03-03 17:27:34,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 17:27:34,875 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,SelfDestructingSolverStorable15 [2022-03-03 17:27:34,875 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 17:27:34,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 17:27:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1689465125, now seen corresponding path program 9 times [2022-03-03 17:27:34,876 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 17:27:34,876 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784819598] [2022-03-03 17:27:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 17:27:34,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 17:27:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 17:27:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-03-03 17:27:35,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 17:27:35,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784819598] [2022-03-03 17:27:35,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784819598] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 17:27:35,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588180868] [2022-03-03 17:27:35,170 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 17:27:35,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 17:27:35,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 17:27:35,171 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 17:27:35,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 17:27:35,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 17:27:35,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 17:27:35,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 84 conjunts are in the unsatisfiable core [2022-03-03 17:27:35,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 17:27:35,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:27:35,963 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-03 17:27:36,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:27:36,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-03 17:27:38,602 INFO L353 Elim1Store]: treesize reduction 82, result has 18.0 percent of original size [2022-03-03 17:27:38,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 32 [2022-03-03 17:27:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:27:38,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 17:28:07,385 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-03-03 17:28:07,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 224 treesize of output 143 [2022-03-03 17:28:07,446 INFO L353 Elim1Store]: treesize reduction 101, result has 37.3 percent of original size [2022-03-03 17:28:07,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 393 treesize of output 396 [2022-03-03 17:28:07,481 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-03-03 17:28:07,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 324 treesize of output 268 [2022-03-03 17:28:07,517 INFO L353 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-03-03 17:28:07,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 252 treesize of output 232 [2022-03-03 17:28:12,404 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 17:28:12,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588180868] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 17:28:12,405 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 17:28:12,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 43, 41] total 92 [2022-03-03 17:28:12,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620542714] [2022-03-03 17:28:12,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 17:28:12,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-03-03 17:28:12,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 17:28:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-03-03 17:28:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=920, Invalid=7395, Unknown=57, NotChecked=0, Total=8372 [2022-03-03 17:28:12,406 INFO L87 Difference]: Start difference. First operand 30730 states and 89571 transitions. Second operand has 92 states, 92 states have (on average 4.1521739130434785) internal successors, (382), 92 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 17:28:48,204 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-03-03 17:28:48,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-03-03 17:28:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-03-03 17:28:48,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 264 SyntacticMatches, 9 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5681 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=2498, Invalid=16346, Unknown=62, NotChecked=0, Total=18906 [2022-03-03 17:28:48,209 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 2748 mSDsluCounter, 7816 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2748 SdHoareTripleChecker+Valid, 7901 SdHoareTripleChecker+Invalid, 2605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1741 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 17:28:48,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2748 Valid, 7901 Invalid, 2605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 827 Invalid, 0 Unknown, 1741 Unchecked, 0.4s Time] [2022-03-03 17:28:48,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 17:28:48,411 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,SelfDestructingSolverStorable16 [2022-03-03 17:28:48,412 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:388) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:229) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 49 more [2022-03-03 17:28:48,415 INFO L158 Benchmark]: Toolchain (without parser) took 597153.14ms. Allocated memory was 207.6MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 151.0MB in the beginning and 436.2MB in the end (delta: -285.3MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2022-03-03 17:28:48,415 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 207.6MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 17:28:48,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.44ms. Allocated memory was 207.6MB in the beginning and 286.3MB in the end (delta: 78.6MB). Free memory was 150.7MB in the beginning and 256.2MB in the end (delta: -105.4MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2022-03-03 17:28:48,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.30ms. Allocated memory is still 286.3MB. Free memory was 256.2MB in the beginning and 254.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 17:28:48,415 INFO L158 Benchmark]: Boogie Preprocessor took 31.29ms. Allocated memory is still 286.3MB. Free memory was 253.8MB in the beginning and 252.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 17:28:48,415 INFO L158 Benchmark]: RCFGBuilder took 502.01ms. Allocated memory is still 286.3MB. Free memory was 252.5MB in the beginning and 234.1MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-03-03 17:28:48,415 INFO L158 Benchmark]: TraceAbstraction took 596341.63ms. Allocated memory was 286.3MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 233.6MB in the beginning and 436.2MB in the end (delta: -202.6MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2022-03-03 17:28:48,416 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 207.6MB. Free memory is still 167.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.44ms. Allocated memory was 207.6MB in the beginning and 286.3MB in the end (delta: 78.6MB). Free memory was 150.7MB in the beginning and 256.2MB in the end (delta: -105.4MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.30ms. Allocated memory is still 286.3MB. Free memory was 256.2MB in the beginning and 254.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.29ms. Allocated memory is still 286.3MB. Free memory was 253.8MB in the beginning and 252.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 502.01ms. Allocated memory is still 286.3MB. Free memory was 252.5MB in the beginning and 234.1MB in the end (delta: 18.3MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 596341.63ms. Allocated memory was 286.3MB in the beginning and 1.5GB in the end (delta: 1.3GB). Free memory was 233.6MB in the beginning and 436.2MB in the end (delta: -202.6MB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...