/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/safe037_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-05 19:59:42,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 19:59:42,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 19:59:43,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 19:59:43,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 19:59:43,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 19:59:43,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 19:59:43,068 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 19:59:43,097 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 19:59:43,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 19:59:43,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 19:59:43,098 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 19:59:43,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 19:59:43,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 19:59:43,100 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 19:59:43,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 19:59:43,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 19:59:43,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 19:59:43,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 19:59:43,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 19:59:43,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 19:59:43,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 19:59:43,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 19:59:43,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 19:59:43,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 19:59:43,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 19:59:43,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 19:59:43,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 19:59:43,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 19:59:43,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 19:59:43,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 19:59:43,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 19:59:43,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 19:59:43,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 19:59:43,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 19:59:43,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 19:59:43,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 19:59:43,103 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 19:59:43,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 19:59:43,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 19:59:43,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 19:59:43,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 19:59:43,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 19:59:43,385 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 19:59:43,386 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 19:59:43,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2021-06-05 19:59:43,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d348aa6/bc0f87f1565144118eba7009ab874b98/FLAG366c43688 [2021-06-05 19:59:43,826 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 19:59:43,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037_pso.opt.i [2021-06-05 19:59:43,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d348aa6/bc0f87f1565144118eba7009ab874b98/FLAG366c43688 [2021-06-05 19:59:44,200 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10d348aa6/bc0f87f1565144118eba7009ab874b98 [2021-06-05 19:59:44,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 19:59:44,202 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 19:59:44,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 19:59:44,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 19:59:44,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 19:59:44,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de42994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44, skipping insertion in model container [2021-06-05 19:59:44,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,213 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 19:59:44,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 19:59:44,353 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/safe037_pso.opt.i[949,962] [2021-06-05 19:59:44,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:59:44,454 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 19:59:44,462 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/safe037_pso.opt.i[949,962] [2021-06-05 19:59:44,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 19:59:44,535 INFO L208 MainTranslator]: Completed translation [2021-06-05 19:59:44,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44 WrapperNode [2021-06-05 19:59:44,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 19:59:44,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 19:59:44,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 19:59:44,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 19:59:44,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 19:59:44,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 19:59:44,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 19:59:44,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 19:59:44,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (1/1) ... [2021-06-05 19:59:44,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 19:59:44,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 19:59:44,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 19:59:44,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 19:59:44,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (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 19:59:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 19:59:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 19:59:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 19:59:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 19:59:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 19:59:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 19:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 19:59:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 19:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 19:59:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 19:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 19:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 19:59:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 19:59:44,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 19:59:44,664 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 19:59:44,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 19:59:44,968 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 19:59:44,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:59:44 BoogieIcfgContainer [2021-06-05 19:59:44,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 19:59:44,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 19:59:44,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 19:59:44,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 19:59:44,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 07:59:44" (1/3) ... [2021-06-05 19:59:44,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eb6f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:59:44, skipping insertion in model container [2021-06-05 19:59:44,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 07:59:44" (2/3) ... [2021-06-05 19:59:44,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8eb6f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 07:59:44, skipping insertion in model container [2021-06-05 19:59:44,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 07:59:44" (3/3) ... [2021-06-05 19:59:44,975 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_pso.opt.i [2021-06-05 19:59:44,978 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 19:59:44,979 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 19:59:44,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 19:59:44,979 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 19:59:45,014 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,015 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,015 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,016 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,016 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,016 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,016 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,017 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,017 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,018 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,018 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,018 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,022 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,023 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,023 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,023 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,023 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,024 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,024 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,024 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,025 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,025 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,025 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,025 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,025 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,027 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,027 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,027 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,031 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,031 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,032 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,032 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,035 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,035 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 19:59:45,039 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 19:59:45,054 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 19:59:45,076 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 19:59:45,076 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 19:59:45,076 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 19:59:45,077 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 19:59:45,077 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 19:59:45,077 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 19:59:45,077 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 19:59:45,077 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-05 19:59:45,088 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-06-05 19:59:45,572 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 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 19:59:45,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 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 19:59:45,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 19:59:45,646 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:59:45,647 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] [2021-06-05 19:59:45,647 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:59:45,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:59:45,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1743011939, now seen corresponding path program 1 times [2021-06-05 19:59:45,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:59:45,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000725767] [2021-06-05 19:59:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:59:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:59:45,943 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 19:59:45,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:59:45,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000725767] [2021-06-05 19:59:45,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000725767] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:59:45,944 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:59:45,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 19:59:45,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137100052] [2021-06-05 19:59:45,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 19:59:45,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:59:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 19:59:45,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 19:59:45,971 INFO L87 Difference]: Start difference. First operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 0 states have call successors, (0), 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 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 19:59:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:59:46,178 INFO L93 Difference]: Finished difference Result 9297 states and 31541 transitions. [2021-06-05 19:59:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:59:46,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-06-05 19:59:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:59:46,219 INFO L225 Difference]: With dead ends: 9297 [2021-06-05 19:59:46,219 INFO L226 Difference]: Without dead ends: 4513 [2021-06-05 19:59:46,220 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:59:46,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2021-06-05 19:59:46,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 4513. [2021-06-05 19:59:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4513 states, 4512 states have (on average 3.3324468085106385) internal successors, (15036), 4512 states have internal predecessors, (15036), 0 states have call successors, (0), 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 19:59:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4513 states to 4513 states and 15036 transitions. [2021-06-05 19:59:46,461 INFO L78 Accepts]: Start accepts. Automaton has 4513 states and 15036 transitions. Word has length 50 [2021-06-05 19:59:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:59:46,464 INFO L482 AbstractCegarLoop]: Abstraction has 4513 states and 15036 transitions. [2021-06-05 19:59:46,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 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 19:59:46,465 INFO L276 IsEmpty]: Start isEmpty. Operand 4513 states and 15036 transitions. [2021-06-05 19:59:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 19:59:46,479 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:59:46,480 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 19:59:46,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 19:59:46,480 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:59:46,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:59:46,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1473884635, now seen corresponding path program 1 times [2021-06-05 19:59:46,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:59:46,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985429926] [2021-06-05 19:59:46,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:59:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:59:46,627 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 19:59:46,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:59:46,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985429926] [2021-06-05 19:59:46,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985429926] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:59:46,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:59:46,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:59:46,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42009894] [2021-06-05 19:59:46,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:59:46,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:59:46,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:59:46,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:59:46,629 INFO L87 Difference]: Start difference. First operand 4513 states and 15036 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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 19:59:46,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:59:46,783 INFO L93 Difference]: Finished difference Result 4045 states and 12969 transitions. [2021-06-05 19:59:46,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 19:59:46,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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 19:59:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:59:46,796 INFO L225 Difference]: With dead ends: 4045 [2021-06-05 19:59:46,796 INFO L226 Difference]: Without dead ends: 2929 [2021-06-05 19:59:46,797 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 125.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 19:59:46,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2021-06-05 19:59:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 2929. [2021-06-05 19:59:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2928 states have (on average 3.151639344262295) internal successors, (9228), 2928 states have internal predecessors, (9228), 0 states have call successors, (0), 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 19:59:46,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 9228 transitions. [2021-06-05 19:59:46,873 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 9228 transitions. Word has length 54 [2021-06-05 19:59:46,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:59:46,874 INFO L482 AbstractCegarLoop]: Abstraction has 2929 states and 9228 transitions. [2021-06-05 19:59:46,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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 19:59:46,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 9228 transitions. [2021-06-05 19:59:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 19:59:46,882 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:59:46,882 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] [2021-06-05 19:59:46,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 19:59:46,883 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:59:46,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:59:46,888 INFO L82 PathProgramCache]: Analyzing trace with hash 881641083, now seen corresponding path program 1 times [2021-06-05 19:59:46,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:59:46,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842395157] [2021-06-05 19:59:46,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:59:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:59:47,031 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 19:59:47,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:59:47,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842395157] [2021-06-05 19:59:47,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842395157] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:59:47,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:59:47,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:59:47,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487039596] [2021-06-05 19:59:47,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:59:47,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:59:47,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:59:47,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:59:47,033 INFO L87 Difference]: Start difference. First operand 2929 states and 9228 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 19:59:47,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:59:47,196 INFO L93 Difference]: Finished difference Result 2281 states and 7005 transitions. [2021-06-05 19:59:47,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 19:59:47,196 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-06-05 19:59:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:59:47,203 INFO L225 Difference]: With dead ends: 2281 [2021-06-05 19:59:47,203 INFO L226 Difference]: Without dead ends: 1741 [2021-06-05 19:59:47,204 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 19:59:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2021-06-05 19:59:47,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2021-06-05 19:59:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 3.027586206896552) internal successors, (5268), 1740 states have internal predecessors, (5268), 0 states have call successors, (0), 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 19:59:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 5268 transitions. [2021-06-05 19:59:47,235 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 5268 transitions. Word has length 58 [2021-06-05 19:59:47,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:59:47,236 INFO L482 AbstractCegarLoop]: Abstraction has 1741 states and 5268 transitions. [2021-06-05 19:59:47,236 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 19:59:47,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 5268 transitions. [2021-06-05 19:59:47,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-05 19:59:47,239 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:59:47,239 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, 1] [2021-06-05 19:59:47,239 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 19:59:47,239 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:59:47,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:59:47,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2050639681, now seen corresponding path program 1 times [2021-06-05 19:59:47,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:59:47,240 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658298956] [2021-06-05 19:59:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:59:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:59:47,312 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 19:59:47,313 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:59:47,313 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658298956] [2021-06-05 19:59:47,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658298956] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:59:47,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:59:47,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:59:47,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142385156] [2021-06-05 19:59:47,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:59:47,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:59:47,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:59:47,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:59:47,314 INFO L87 Difference]: Start difference. First operand 1741 states and 5268 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:59:47,392 INFO L93 Difference]: Finished difference Result 2404 states and 7288 transitions. [2021-06-05 19:59:47,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:59:47,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-06-05 19:59:47,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:59:47,399 INFO L225 Difference]: With dead ends: 2404 [2021-06-05 19:59:47,399 INFO L226 Difference]: Without dead ends: 1713 [2021-06-05 19:59:47,399 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:59:47,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2021-06-05 19:59:47,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1485. [2021-06-05 19:59:47,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 1484 states have (on average 2.967654986522911) internal successors, (4404), 1484 states have internal predecessors, (4404), 0 states have call successors, (0), 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 19:59:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 4404 transitions. [2021-06-05 19:59:47,427 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 4404 transitions. Word has length 62 [2021-06-05 19:59:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:59:47,428 INFO L482 AbstractCegarLoop]: Abstraction has 1485 states and 4404 transitions. [2021-06-05 19:59:47,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 4404 transitions. [2021-06-05 19:59:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-05 19:59:47,431 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:59:47,431 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, 1] [2021-06-05 19:59:47,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 19:59:47,431 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:59:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:59:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1003477565, now seen corresponding path program 2 times [2021-06-05 19:59:47,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:59:47,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055068077] [2021-06-05 19:59:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:59:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:59:47,508 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 19:59:47,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:59:47,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055068077] [2021-06-05 19:59:47,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055068077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:59:47,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:59:47,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 19:59:47,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689433198] [2021-06-05 19:59:47,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 19:59:47,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:59:47,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 19:59:47,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-06-05 19:59:47,510 INFO L87 Difference]: Start difference. First operand 1485 states and 4404 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:59:47,599 INFO L93 Difference]: Finished difference Result 2148 states and 6424 transitions. [2021-06-05 19:59:47,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:59:47,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-06-05 19:59:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:59:47,605 INFO L225 Difference]: With dead ends: 2148 [2021-06-05 19:59:47,605 INFO L226 Difference]: Without dead ends: 1146 [2021-06-05 19:59:47,606 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-06-05 19:59:47,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-06-05 19:59:47,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2021-06-05 19:59:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 2.958951965065502) internal successors, (3388), 1145 states have internal predecessors, (3388), 0 states have call successors, (0), 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 19:59:47,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 3388 transitions. [2021-06-05 19:59:47,645 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 3388 transitions. Word has length 62 [2021-06-05 19:59:47,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:59:47,646 INFO L482 AbstractCegarLoop]: Abstraction has 1146 states and 3388 transitions. [2021-06-05 19:59:47,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 3388 transitions. [2021-06-05 19:59:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-05 19:59:47,648 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:59:47,648 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, 1] [2021-06-05 19:59:47,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 19:59:47,648 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:59:47,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:59:47,648 INFO L82 PathProgramCache]: Analyzing trace with hash 130918569, now seen corresponding path program 3 times [2021-06-05 19:59:47,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:59:47,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53030250] [2021-06-05 19:59:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:59:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:59:47,748 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 19:59:47,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:59:47,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53030250] [2021-06-05 19:59:47,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53030250] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:59:47,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:59:47,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:59:47,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433857476] [2021-06-05 19:59:47,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:59:47,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:59:47,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:59:47,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:59:47,749 INFO L87 Difference]: Start difference. First operand 1146 states and 3388 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:59:47,806 INFO L93 Difference]: Finished difference Result 1629 states and 4829 transitions. [2021-06-05 19:59:47,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:59:47,806 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-06-05 19:59:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:59:47,809 INFO L225 Difference]: With dead ends: 1629 [2021-06-05 19:59:47,810 INFO L226 Difference]: Without dead ends: 806 [2021-06-05 19:59:47,810 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:59:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-06-05 19:59:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2021-06-05 19:59:47,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 2.8732919254658387) internal successors, (2313), 805 states have internal predecessors, (2313), 0 states have call successors, (0), 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 19:59:47,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2313 transitions. [2021-06-05 19:59:47,823 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2313 transitions. Word has length 62 [2021-06-05 19:59:47,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:59:47,823 INFO L482 AbstractCegarLoop]: Abstraction has 806 states and 2313 transitions. [2021-06-05 19:59:47,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,823 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2313 transitions. [2021-06-05 19:59:47,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-05 19:59:47,825 INFO L546 BasicCegarLoop]: Found error trace [2021-06-05 19:59:47,825 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, 1] [2021-06-05 19:59:47,825 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 19:59:47,825 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 19:59:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 19:59:47,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1517769035, now seen corresponding path program 4 times [2021-06-05 19:59:47,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 19:59:47,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497060941] [2021-06-05 19:59:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 19:59:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 19:59:47,908 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 19:59:47,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 19:59:47,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497060941] [2021-06-05 19:59:47,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497060941] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 19:59:47,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 19:59:47,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 19:59:47,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14263804] [2021-06-05 19:59:47,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 19:59:47,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 19:59:47,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 19:59:47,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 19:59:47,909 INFO L87 Difference]: Start difference. First operand 806 states and 2313 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 19:59:47,964 INFO L93 Difference]: Finished difference Result 752 states and 2151 transitions. [2021-06-05 19:59:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 19:59:47,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2021-06-05 19:59:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 19:59:47,964 INFO L225 Difference]: With dead ends: 752 [2021-06-05 19:59:47,964 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 19:59:47,965 INFO L810 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 19:59:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 19:59:47,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 19:59:47,965 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 19:59:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 19:59:47,965 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-06-05 19:59:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 19:59:47,965 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 19:59:47,965 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 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 19:59:47,965 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 19:59:47,965 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 19:59:47,966 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 19:59:47,967 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 19:59:47,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 07:59:47 BasicIcfg [2021-06-05 19:59:47,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 19:59:47,969 INFO L168 Benchmark]: Toolchain (without parser) took 3766.77 ms. Allocated memory was 337.6 MB in the beginning and 501.2 MB in the end (delta: 163.6 MB). Free memory was 300.1 MB in the beginning and 350.8 MB in the end (delta: -50.7 MB). Peak memory consumption was 116.0 MB. Max. memory is 16.0 GB. [2021-06-05 19:59:47,969 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 337.6 MB. Free memory is still 317.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 19:59:47,970 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.80 ms. Allocated memory is still 337.6 MB. Free memory was 299.9 MB in the beginning and 299.2 MB in the end (delta: 750.7 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:59:47,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.74 ms. Allocated memory is still 337.6 MB. Free memory was 299.2 MB in the beginning and 297.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:59:47,970 INFO L168 Benchmark]: Boogie Preprocessor took 13.20 ms. Allocated memory is still 337.6 MB. Free memory was 297.1 MB in the beginning and 296.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 19:59:47,970 INFO L168 Benchmark]: RCFGBuilder took 377.37 ms. Allocated memory is still 337.6 MB. Free memory was 295.0 MB in the beginning and 270.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 19:59:47,971 INFO L168 Benchmark]: TraceAbstraction took 2997.98 ms. Allocated memory was 337.6 MB in the beginning and 501.2 MB in the end (delta: 163.6 MB). Free memory was 270.9 MB in the beginning and 350.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 85.8 MB. Max. memory is 16.0 GB. [2021-06-05 19:59:47,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 337.6 MB. Free memory is still 317.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 330.80 ms. Allocated memory is still 337.6 MB. Free memory was 299.9 MB in the beginning and 299.2 MB in the end (delta: 750.7 kB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 41.74 ms. Allocated memory is still 337.6 MB. Free memory was 299.2 MB in the beginning and 297.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.20 ms. Allocated memory is still 337.6 MB. Free memory was 297.1 MB in the beginning and 296.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 377.37 ms. Allocated memory is still 337.6 MB. Free memory was 295.0 MB in the beginning and 270.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2997.98 ms. Allocated memory was 337.6 MB in the beginning and 501.2 MB in the end (delta: 163.6 MB). Free memory was 270.9 MB in the beginning and 350.8 MB in the end (delta: -79.9 MB). Peak memory consumption was 85.8 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, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2891.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 105.2ms, AutomataDifference: 909.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 495.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 734 SDtfs, 915 SDslu, 2769 SDs, 0 SdLazy, 263 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 171.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 608.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9333occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 417.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 228 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.5ms SsaConstructionTime, 193.9ms SatisfiabilityAnalysisTime, 581.2ms InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...