/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:56:33,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:56:33,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:56:33,130 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:56:33,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 19:56:33,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 19:56:33,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 19:56:33,173 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 [2021-06-05 19:56:33,199 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:56:33,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:56:33,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:56:33,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:56:33,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:56:33,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:56:33,201 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:56:33,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:56:33,202 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:56:33,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:56:33,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:56:33,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:56:33,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:56:33,203 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:56:33,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:56:33,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:56:33,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:56:33,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:56:33,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:56:33,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:56:33,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:56:33,476 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:56:33,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2021-06-05 19:56:33,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4670409c5/49119ba8f54e4fe18ac239078b2ddc5c/FLAG88f046bff [2021-06-05 19:56:33,964 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:56:33,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i [2021-06-05 19:56:33,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4670409c5/49119ba8f54e4fe18ac239078b2ddc5c/FLAG88f046bff [2021-06-05 19:56:33,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4670409c5/49119ba8f54e4fe18ac239078b2ddc5c [2021-06-05 19:56:33,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:56:33,995 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:56:33,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:56:33,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:56:34,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:56:34,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:56:33" (1/1) ... [2021-06-05 19:56:34,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580494bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34, skipping insertion in model container [2021-06-05 19:56:34,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:56:33" (1/1) ... [2021-06-05 19:56:34,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:56:34,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:56:34,205 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i[950,963] [2021-06-05 19:56:34,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:56:34,341 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:56:34,350 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc.i[950,963] [2021-06-05 19:56:34,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:56:34,418 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:56:34,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34 WrapperNode [2021-06-05 19:56:34,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:56:34,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:56:34,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:56:34,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:56:34,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:56:34,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:56:34,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:56:34,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:56:34,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... [2021-06-05 19:56:34,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:56:34,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:56:34,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:56:34,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:56:34,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:56:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:56:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:56:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:56:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:56:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:56:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:56:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:56:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:56:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:56:34,519 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:56:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:56:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:56:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:56:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:56:34,521 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 19:56:34,798 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:56:34,798 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:56:34,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:56:34 BoogieIcfgContainer [2021-06-05 19:56:34,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:56:34,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:56:34,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:56:34,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:56:34,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:56:33" (1/3) ... [2021-06-05 19:56:34,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f7c221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:56:34, skipping insertion in model container [2021-06-05 19:56:34,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:56:34" (2/3) ... [2021-06-05 19:56:34,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f7c221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:56:34, skipping insertion in model container [2021-06-05 19:56:34,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:56:34" (3/3) ... [2021-06-05 19:56:34,804 INFO L111 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc.i [2021-06-05 19:56:34,808 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:56:34,808 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:56:34,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:56:34,809 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:56:34,828 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,829 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,830 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,831 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,831 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,832 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,833 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,834 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,834 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,838 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,838 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,838 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,838 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,840 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,840 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,840 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,840 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:56:34,842 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:56:34,855 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:56:34,867 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:56:34,867 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:56:34,867 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:56:34,867 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:56:34,867 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:56:34,867 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:56:34,867 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:56:34,867 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:56:34,873 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-05 19:56:35,204 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:35,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 19:56:35,262 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:35,263 INFO L554 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] [2021-06-05 19:56:35,263 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:35,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:35,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1943773822, now seen corresponding path program 1 times [2021-06-05 19:56:35,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:35,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171506045] [2021-06-05 19:56:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:35,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:35,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:35,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171506045] [2021-06-05 19:56:35,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171506045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:35,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:35,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:56:35,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283677152] [2021-06-05 19:56:35,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:56:35,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:35,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:56:35,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:56:35,649 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 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 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:36,069 INFO L93 Difference]: Finished difference Result 18268 states and 62923 transitions. [2021-06-05 19:56:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:56:36,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-06-05 19:56:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:36,117 INFO L225 Difference]: With dead ends: 18268 [2021-06-05 19:56:36,117 INFO L226 Difference]: Without dead ends: 6286 [2021-06-05 19:56:36,118 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 151.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:56:36,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6286 states. [2021-06-05 19:56:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6286 to 5356. [2021-06-05 19:56:36,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5355 states have (on average 3.3718020541549953) internal successors, (18056), 5355 states have internal predecessors, (18056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 18056 transitions. [2021-06-05 19:56:36,397 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 18056 transitions. Word has length 49 [2021-06-05 19:56:36,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:36,400 INFO L482 AbstractCegarLoop]: Abstraction has 5356 states and 18056 transitions. [2021-06-05 19:56:36,401 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 18056 transitions. [2021-06-05 19:56:36,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 19:56:36,417 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:36,417 INFO L554 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] [2021-06-05 19:56:36,417 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:56:36,417 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:36,420 INFO L82 PathProgramCache]: Analyzing trace with hash -303430371, now seen corresponding path program 1 times [2021-06-05 19:56:36,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:36,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260933313] [2021-06-05 19:56:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:36,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:36,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260933313] [2021-06-05 19:56:36,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260933313] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:36,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:36,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:56:36,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59332949] [2021-06-05 19:56:36,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:56:36,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:36,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:56:36,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:56:36,549 INFO L87 Difference]: Start difference. First operand 5356 states and 18056 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:36,785 INFO L93 Difference]: Finished difference Result 7316 states and 24195 transitions. [2021-06-05 19:56:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 19:56:36,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-06-05 19:56:36,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:36,813 INFO L225 Difference]: With dead ends: 7316 [2021-06-05 19:56:36,813 INFO L226 Difference]: Without dead ends: 5904 [2021-06-05 19:56:36,814 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 169.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:56:36,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2021-06-05 19:56:36,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 4616. [2021-06-05 19:56:36,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 3.342145178764897) internal successors, (15424), 4615 states have internal predecessors, (15424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:36,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 15424 transitions. [2021-06-05 19:56:36,967 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 15424 transitions. Word has length 51 [2021-06-05 19:56:36,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:36,967 INFO L482 AbstractCegarLoop]: Abstraction has 4616 states and 15424 transitions. [2021-06-05 19:56:36,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:36,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 15424 transitions. [2021-06-05 19:56:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 19:56:36,975 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:36,976 INFO L554 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] [2021-06-05 19:56:36,976 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:56:36,976 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:36,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:36,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1505957406, now seen corresponding path program 1 times [2021-06-05 19:56:36,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:36,977 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767986622] [2021-06-05 19:56:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:37,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:37,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767986622] [2021-06-05 19:56:37,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767986622] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:37,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:37,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:56:37,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076021375] [2021-06-05 19:56:37,083 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:56:37,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:37,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:56:37,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:56:37,084 INFO L87 Difference]: Start difference. First operand 4616 states and 15424 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:37,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:37,220 INFO L93 Difference]: Finished difference Result 5106 states and 16936 transitions. [2021-06-05 19:56:37,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:56:37,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-06-05 19:56:37,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:37,248 INFO L225 Difference]: With dead ends: 5106 [2021-06-05 19:56:37,248 INFO L226 Difference]: Without dead ends: 4406 [2021-06-05 19:56:37,248 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 101.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:56:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4406 states. [2021-06-05 19:56:37,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4406 to 4126. [2021-06-05 19:56:37,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 3.3132121212121213) internal successors, (13667), 4125 states have internal predecessors, (13667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:37,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 13667 transitions. [2021-06-05 19:56:37,376 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 13667 transitions. Word has length 53 [2021-06-05 19:56:37,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:37,377 INFO L482 AbstractCegarLoop]: Abstraction has 4126 states and 13667 transitions. [2021-06-05 19:56:37,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 13667 transitions. [2021-06-05 19:56:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:56:37,385 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:37,385 INFO L554 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] [2021-06-05 19:56:37,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:56:37,386 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:37,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:37,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1566342532, now seen corresponding path program 1 times [2021-06-05 19:56:37,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:37,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210613247] [2021-06-05 19:56:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:37,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:37,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210613247] [2021-06-05 19:56:37,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210613247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:37,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:37,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:56:37,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413479565] [2021-06-05 19:56:37,491 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:56:37,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:37,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:56:37,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:56:37,495 INFO L87 Difference]: Start difference. First operand 4126 states and 13667 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:37,603 INFO L93 Difference]: Finished difference Result 5189 states and 16946 transitions. [2021-06-05 19:56:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:56:37,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2021-06-05 19:56:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:37,613 INFO L225 Difference]: With dead ends: 5189 [2021-06-05 19:56:37,613 INFO L226 Difference]: Without dead ends: 3753 [2021-06-05 19:56:37,614 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 75.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:56:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3753 states. [2021-06-05 19:56:37,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3753 to 3753. [2021-06-05 19:56:37,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3753 states, 3752 states have (on average 3.246268656716418) internal successors, (12180), 3752 states have internal predecessors, (12180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:37,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3753 states to 3753 states and 12180 transitions. [2021-06-05 19:56:37,711 INFO L78 Accepts]: Start accepts. Automaton has 3753 states and 12180 transitions. Word has length 54 [2021-06-05 19:56:37,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:37,713 INFO L482 AbstractCegarLoop]: Abstraction has 3753 states and 12180 transitions. [2021-06-05 19:56:37,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:37,713 INFO L276 IsEmpty]: Start isEmpty. Operand 3753 states and 12180 transitions. [2021-06-05 19:56:37,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 19:56:37,719 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:37,719 INFO L554 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] [2021-06-05 19:56:37,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:56:37,722 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:37,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:37,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1073595617, now seen corresponding path program 1 times [2021-06-05 19:56:37,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:37,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31944682] [2021-06-05 19:56:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:37,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:37,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31944682] [2021-06-05 19:56:37,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31944682] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:37,798 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:37,798 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:56:37,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629591009] [2021-06-05 19:56:37,798 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:56:37,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:56:37,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:56:37,799 INFO L87 Difference]: Start difference. First operand 3753 states and 12180 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:37,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:37,917 INFO L93 Difference]: Finished difference Result 3927 states and 12416 transitions. [2021-06-05 19:56:37,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:56:37,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-06-05 19:56:37,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:37,922 INFO L225 Difference]: With dead ends: 3927 [2021-06-05 19:56:37,923 INFO L226 Difference]: Without dead ends: 2751 [2021-06-05 19:56:37,923 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 88.5ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:56:37,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2021-06-05 19:56:37,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2751. [2021-06-05 19:56:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2751 states, 2750 states have (on average 3.104) internal successors, (8536), 2750 states have internal predecessors, (8536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 8536 transitions. [2021-06-05 19:56:38,004 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 8536 transitions. Word has length 55 [2021-06-05 19:56:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:38,004 INFO L482 AbstractCegarLoop]: Abstraction has 2751 states and 8536 transitions. [2021-06-05 19:56:38,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 8536 transitions. [2021-06-05 19:56:38,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 19:56:38,008 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:38,008 INFO L554 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] [2021-06-05 19:56:38,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:56:38,009 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1221177026, now seen corresponding path program 1 times [2021-06-05 19:56:38,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:38,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560949623] [2021-06-05 19:56:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:38,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:38,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560949623] [2021-06-05 19:56:38,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560949623] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:38,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:38,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:56:38,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000983828] [2021-06-05 19:56:38,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:56:38,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:38,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:56:38,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:56:38,071 INFO L87 Difference]: Start difference. First operand 2751 states and 8536 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:38,181 INFO L93 Difference]: Finished difference Result 2364 states and 7192 transitions. [2021-06-05 19:56:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:56:38,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-06-05 19:56:38,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:38,186 INFO L225 Difference]: With dead ends: 2364 [2021-06-05 19:56:38,186 INFO L226 Difference]: Without dead ends: 1644 [2021-06-05 19:56:38,186 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 85.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:56:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2021-06-05 19:56:38,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1596. [2021-06-05 19:56:38,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1596 states, 1595 states have (on average 2.9711598746081505) internal successors, (4739), 1595 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 4739 transitions. [2021-06-05 19:56:38,209 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 4739 transitions. Word has length 57 [2021-06-05 19:56:38,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:38,209 INFO L482 AbstractCegarLoop]: Abstraction has 1596 states and 4739 transitions. [2021-06-05 19:56:38,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 4739 transitions. [2021-06-05 19:56:38,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 19:56:38,212 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:38,212 INFO L554 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] [2021-06-05 19:56:38,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:56:38,212 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:38,213 INFO L82 PathProgramCache]: Analyzing trace with hash 491831026, now seen corresponding path program 1 times [2021-06-05 19:56:38,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:38,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938682351] [2021-06-05 19:56:38,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:38,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:38,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938682351] [2021-06-05 19:56:38,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938682351] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:38,268 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:38,268 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:56:38,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435293103] [2021-06-05 19:56:38,268 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:56:38,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:38,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:56:38,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:56:38,269 INFO L87 Difference]: Start difference. First operand 1596 states and 4739 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:38,326 INFO L93 Difference]: Finished difference Result 2211 states and 6595 transitions. [2021-06-05 19:56:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:56:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-06-05 19:56:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:38,328 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 19:56:38,328 INFO L226 Difference]: Without dead ends: 873 [2021-06-05 19:56:38,329 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:56:38,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-06-05 19:56:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2021-06-05 19:56:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 2.897935779816514) internal successors, (2527), 872 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 2527 transitions. [2021-06-05 19:56:38,341 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 2527 transitions. Word has length 61 [2021-06-05 19:56:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:38,341 INFO L482 AbstractCegarLoop]: Abstraction has 873 states and 2527 transitions. [2021-06-05 19:56:38,341 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 2527 transitions. [2021-06-05 19:56:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 19:56:38,342 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:38,342 INFO L554 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] [2021-06-05 19:56:38,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:56:38,343 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:38,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:38,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1465502444, now seen corresponding path program 2 times [2021-06-05 19:56:38,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:38,343 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868569469] [2021-06-05 19:56:38,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:38,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:38,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:38,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868569469] [2021-06-05 19:56:38,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868569469] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:38,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:38,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:56:38,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587849592] [2021-06-05 19:56:38,414 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:56:38,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:38,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:56:38,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:56:38,415 INFO L87 Difference]: Start difference. First operand 873 states and 2527 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:38,481 INFO L93 Difference]: Finished difference Result 1398 states and 4068 transitions. [2021-06-05 19:56:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 19:56:38,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-06-05 19:56:38,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:38,483 INFO L225 Difference]: With dead ends: 1398 [2021-06-05 19:56:38,483 INFO L226 Difference]: Without dead ends: 847 [2021-06-05 19:56:38,483 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 19:56:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-06-05 19:56:38,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2021-06-05 19:56:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 2.900709219858156) internal successors, (2454), 846 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2454 transitions. [2021-06-05 19:56:38,526 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2454 transitions. Word has length 61 [2021-06-05 19:56:38,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:38,526 INFO L482 AbstractCegarLoop]: Abstraction has 847 states and 2454 transitions. [2021-06-05 19:56:38,526 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2454 transitions. [2021-06-05 19:56:38,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 19:56:38,528 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:38,528 INFO L554 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] [2021-06-05 19:56:38,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 19:56:38,528 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:38,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:38,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1188267042, now seen corresponding path program 3 times [2021-06-05 19:56:38,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:38,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998832901] [2021-06-05 19:56:38,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:38,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:38,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998832901] [2021-06-05 19:56:38,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998832901] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:38,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:38,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:56:38,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006964974] [2021-06-05 19:56:38,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:56:38,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:38,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:56:38,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:56:38,600 INFO L87 Difference]: Start difference. First operand 847 states and 2454 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:38,650 INFO L93 Difference]: Finished difference Result 1330 states and 3895 transitions. [2021-06-05 19:56:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 19:56:38,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-06-05 19:56:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:38,652 INFO L225 Difference]: With dead ends: 1330 [2021-06-05 19:56:38,652 INFO L226 Difference]: Without dead ends: 805 [2021-06-05 19:56:38,653 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:56:38,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-06-05 19:56:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2021-06-05 19:56:38,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.8756218905472637) internal successors, (2312), 804 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2312 transitions. [2021-06-05 19:56:38,663 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2312 transitions. Word has length 61 [2021-06-05 19:56:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:38,663 INFO L482 AbstractCegarLoop]: Abstraction has 805 states and 2312 transitions. [2021-06-05 19:56:38,664 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,664 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2312 transitions. [2021-06-05 19:56:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 19:56:38,665 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:56:38,665 INFO L554 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] [2021-06-05 19:56:38,665 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 19:56:38,665 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:56:38,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:56:38,665 INFO L82 PathProgramCache]: Analyzing trace with hash 78142742, now seen corresponding path program 4 times [2021-06-05 19:56:38,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:56:38,666 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214649189] [2021-06-05 19:56:38,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:56:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:56:38,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 19:56:38,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:56:38,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214649189] [2021-06-05 19:56:38,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214649189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:56:38,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:56:38,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:56:38,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077806242] [2021-06-05 19:56:38,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:56:38,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:56:38,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:56:38,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:56:38,759 INFO L87 Difference]: Start difference. First operand 805 states and 2312 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:56:38,806 INFO L93 Difference]: Finished difference Result 751 states and 2150 transitions. [2021-06-05 19:56:38,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:56:38,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-06-05 19:56:38,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:56:38,807 INFO L225 Difference]: With dead ends: 751 [2021-06-05 19:56:38,807 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:56:38,807 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 19:56:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:56:38,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:56:38,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:56:38,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-05 19:56:38,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:56:38,808 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:56:38,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 19:56:38,808 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:56:38,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:56:38,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 19:56:38,809 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:56:38,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:56:38 BasicIcfg [2021-06-05 19:56:38,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:56:38,812 INFO L168 Benchmark]: Toolchain (without parser) took 4816.42 ms. Allocated memory was 375.4 MB in the beginning and 929.0 MB in the end (delta: 553.6 MB). Free memory was 338.0 MB in the beginning and 679.8 MB in the end (delta: -341.8 MB). Peak memory consumption was 215.0 MB. Max. memory is 16.0 GB. [2021-06-05 19:56:38,812 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 375.4 MB. Free memory is still 355.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:56:38,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 421.19 ms. Allocated memory is still 375.4 MB. Free memory was 337.7 MB in the beginning and 336.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-06-05 19:56:38,813 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.70 ms. Allocated memory is still 375.4 MB. Free memory was 336.2 MB in the beginning and 334.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:56:38,813 INFO L168 Benchmark]: Boogie Preprocessor took 13.38 ms. Allocated memory is still 375.4 MB. Free memory was 334.2 MB in the beginning and 333.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:56:38,813 INFO L168 Benchmark]: RCFGBuilder took 343.77 ms. Allocated memory is still 375.4 MB. Free memory was 333.1 MB in the beginning and 309.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:56:38,813 INFO L168 Benchmark]: TraceAbstraction took 4010.22 ms. Allocated memory was 375.4 MB in the beginning and 929.0 MB in the end (delta: 553.6 MB). Free memory was 308.0 MB in the beginning and 679.8 MB in the end (delta: -371.8 MB). Peak memory consumption was 182.9 MB. Max. memory is 16.0 GB. [2021-06-05 19:56:38,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 375.4 MB. Free memory is still 355.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 421.19 ms. Allocated memory is still 375.4 MB. Free memory was 337.7 MB in the beginning and 336.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.70 ms. Allocated memory is still 375.4 MB. Free memory was 336.2 MB in the beginning and 334.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.38 ms. Allocated memory is still 375.4 MB. Free memory was 334.2 MB in the beginning and 333.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 343.77 ms. Allocated memory is still 375.4 MB. Free memory was 333.1 MB in the beginning and 309.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4010.22 ms. Allocated memory was 375.4 MB in the beginning and 929.0 MB in the end (delta: 553.6 MB). Free memory was 308.0 MB in the beginning and 679.8 MB in the end (delta: -371.8 MB). Peak memory consumption was 182.9 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3943.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 104.7ms, AutomataDifference: 1514.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 337.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1068 SDtfs, 1509 SDslu, 3869 SDs, 0 SdLazy, 432 SolverSat, 70 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 272.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 922.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 816.0ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2546 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.2ms SsaConstructionTime, 211.9ms SatisfiabilityAnalysisTime, 761.1ms InterpolantComputationTime, 563 NumberOfCodeBlocks, 563 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 553 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...