/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:52:06,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:52:06,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:52:06,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 18:52:06,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 18:52:06,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 18:52:06,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 18:52:06,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 18:52:06,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 18:52:06,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 18:52:06,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 18:52:06,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 18:52:06,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 18:52:06,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 18:52:06,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 18:52:06,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 18:52:06,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-13 18:52:06,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:52:06,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:52:06,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:52:06,201 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 [2021-07-13 18:52:06,220 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:52:06,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:52:06,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:52:06,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:52:06,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:52:06,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:52:06,222 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:52:06,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:52:06,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:52:06,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:52:06,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:52:06,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:52:06,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:52:06,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:52:06,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:52:06,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:52:06,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:52:06,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:52:06,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:52:06,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:52:06,224 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:52:06,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:52:06,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:52:06,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:52:06,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:52:06,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:52:06,225 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:52:06,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:52:06,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:52:06,225 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:52:06,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:52:06,225 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:52:06,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:52:06,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:52:06,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:52:06,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:52:06,530 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:52:06,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-07-13 18:52:06,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5a34aac/6eba50914bec481c9d9938d012c74fff/FLAGa259a47d6 [2021-07-13 18:52:07,121 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:52:07,121 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-07-13 18:52:07,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5a34aac/6eba50914bec481c9d9938d012c74fff/FLAGa259a47d6 [2021-07-13 18:52:07,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a5a34aac/6eba50914bec481c9d9938d012c74fff [2021-07-13 18:52:07,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:52:07,611 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:52:07,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:52:07,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:52:07,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:52:07,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da85706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:07, skipping insertion in model container [2021-07-13 18:52:07,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:52:07" (1/1) ... [2021-07-13 18:52:07,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:52:07,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:52:07,803 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/safe015_pso.oepc.i[950,963] [2021-07-13 18:52:07,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:52:07,995 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:52:08,023 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/safe015_pso.oepc.i[950,963] [2021-07-13 18:52:08,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:52:08,103 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:52:08,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08 WrapperNode [2021-07-13 18:52:08,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:52:08,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:52:08,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:52:08,104 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:52:08,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:52:08,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:52:08,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:52:08,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:52:08,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (1/1) ... [2021-07-13 18:52:08,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:52:08,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:52:08,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:52:08,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:52:08,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (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 [2021-07-13 18:52:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:52:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:52:08,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:52:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:52:08,232 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-13 18:52:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-13 18:52:08,234 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-13 18:52:08,234 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-13 18:52:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-13 18:52:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-13 18:52:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:52:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:52:08,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:52:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:52:08,236 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:52:08,581 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:52:08,582 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-13 18:52:08,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:52:08 BoogieIcfgContainer [2021-07-13 18:52:08,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:52:08,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:52:08,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:52:08,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:52:08,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:52:07" (1/3) ... [2021-07-13 18:52:08,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4926490a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:52:08, skipping insertion in model container [2021-07-13 18:52:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:52:08" (2/3) ... [2021-07-13 18:52:08,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4926490a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:52:08, skipping insertion in model container [2021-07-13 18:52:08,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:52:08" (3/3) ... [2021-07-13 18:52:08,593 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2021-07-13 18:52:08,600 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:52:08,600 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:52:08,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 18:52:08,601 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:52:08,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,637 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,637 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,639 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,639 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,639 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,640 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,640 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,641 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,641 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,641 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,643 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,643 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,643 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,644 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,645 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,648 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,649 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,649 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,650 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,651 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,653 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,654 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,654 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,654 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,662 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,662 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,667 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,668 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,668 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:52:08,672 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 18:52:08,692 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 18:52:08,719 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:52:08,720 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:52:08,720 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:52:08,720 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:52:08,720 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:52:08,720 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:52:08,720 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:52:08,720 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:52:08,739 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-07-13 18:52:08,927 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:08,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-07-13 18:52:08,982 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:08,983 INFO L508 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] [2021-07-13 18:52:08,984 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:08,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-07-13 18:52:08,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:08,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688679014] [2021-07-13 18:52:08,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:09,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:09,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688679014] [2021-07-13 18:52:09,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688679014] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:09,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:09,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:52:09,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485532366] [2021-07-13 18:52:09,501 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:52:09,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:09,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:52:09,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:52:09,531 INFO L87 Difference]: Start difference. First operand has 5558 states, 5557 states have (on average 3.4943314738168074) internal successors, (19418), 5557 states have internal predecessors, (19418), 0 states have call successors, (0), 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 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:09,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:09,920 INFO L93 Difference]: Finished difference Result 10568 states and 35705 transitions. [2021-07-13 18:52:09,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:09,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-07-13 18:52:09,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:09,990 INFO L225 Difference]: With dead ends: 10568 [2021-07-13 18:52:09,990 INFO L226 Difference]: Without dead ends: 7140 [2021-07-13 18:52:09,991 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:52:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2021-07-13 18:52:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6006. [2021-07-13 18:52:10,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6006 states, 6005 states have (on average 3.33488759367194) internal successors, (20026), 6005 states have internal predecessors, (20026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6006 states to 6006 states and 20026 transitions. [2021-07-13 18:52:10,363 INFO L78 Accepts]: Start accepts. Automaton has 6006 states and 20026 transitions. Word has length 48 [2021-07-13 18:52:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:10,366 INFO L482 AbstractCegarLoop]: Abstraction has 6006 states and 20026 transitions. [2021-07-13 18:52:10,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:10,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6006 states and 20026 transitions. [2021-07-13 18:52:10,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:52:10,387 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:10,388 INFO L508 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] [2021-07-13 18:52:10,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:52:10,388 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:10,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:10,391 INFO L82 PathProgramCache]: Analyzing trace with hash -396116582, now seen corresponding path program 1 times [2021-07-13 18:52:10,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:10,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131033216] [2021-07-13 18:52:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:10,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:10,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131033216] [2021-07-13 18:52:10,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131033216] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:10,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:10,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:52:10,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026811110] [2021-07-13 18:52:10,671 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:52:10,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:10,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:52:10,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:52:10,672 INFO L87 Difference]: Start difference. First operand 6006 states and 20026 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-07-13 18:52:10,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:10,989 INFO L93 Difference]: Finished difference Result 8410 states and 27696 transitions. [2021-07-13 18:52:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:52:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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 [2021-07-13 18:52:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:11,036 INFO L225 Difference]: With dead ends: 8410 [2021-07-13 18:52:11,036 INFO L226 Difference]: Without dead ends: 6474 [2021-07-13 18:52:11,038 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 260.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:52:11,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2021-07-13 18:52:11,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5338. [2021-07-13 18:52:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.3041034288926365) internal successors, (17634), 5337 states have internal predecessors, (17634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 17634 transitions. [2021-07-13 18:52:11,262 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 17634 transitions. Word has length 50 [2021-07-13 18:52:11,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:11,263 INFO L482 AbstractCegarLoop]: Abstraction has 5338 states and 17634 transitions. [2021-07-13 18:52:11,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 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) [2021-07-13 18:52:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 17634 transitions. [2021-07-13 18:52:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-13 18:52:11,277 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:11,277 INFO L508 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] [2021-07-13 18:52:11,277 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:52:11,277 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:11,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1823781980, now seen corresponding path program 1 times [2021-07-13 18:52:11,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:11,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152474124] [2021-07-13 18:52:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:11,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:11,439 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:11,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152474124] [2021-07-13 18:52:11,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152474124] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:11,440 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:11,440 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:52:11,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024743762] [2021-07-13 18:52:11,441 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:52:11,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:11,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:52:11,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:52:11,442 INFO L87 Difference]: Start difference. First operand 5338 states and 17634 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) [2021-07-13 18:52:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:11,710 INFO L93 Difference]: Finished difference Result 7210 states and 23597 transitions. [2021-07-13 18:52:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:52:11,711 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 [2021-07-13 18:52:11,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:11,754 INFO L225 Difference]: With dead ends: 7210 [2021-07-13 18:52:11,754 INFO L226 Difference]: Without dead ends: 5886 [2021-07-13 18:52:11,755 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 161.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:52:11,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5886 states. [2021-07-13 18:52:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5886 to 4551. [2021-07-13 18:52:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4551 states, 4550 states have (on average 3.291208791208791) internal successors, (14975), 4550 states have internal predecessors, (14975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 14975 transitions. [2021-07-13 18:52:11,928 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 14975 transitions. Word has length 51 [2021-07-13 18:52:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:11,928 INFO L482 AbstractCegarLoop]: Abstraction has 4551 states and 14975 transitions. [2021-07-13 18:52:11,928 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) [2021-07-13 18:52:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 14975 transitions. [2021-07-13 18:52:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-13 18:52:11,939 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:11,940 INFO L508 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] [2021-07-13 18:52:11,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:52:11,940 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:11,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1772356823, now seen corresponding path program 1 times [2021-07-13 18:52:11,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:11,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119839039] [2021-07-13 18:52:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:12,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:12,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:12,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119839039] [2021-07-13 18:52:12,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119839039] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:12,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:12,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:52:12,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996221781] [2021-07-13 18:52:12,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:52:12,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:12,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:52:12,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:52:12,054 INFO L87 Difference]: Start difference. First operand 4551 states and 14975 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:12,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:12,159 INFO L93 Difference]: Finished difference Result 5143 states and 16830 transitions. [2021-07-13 18:52:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:12,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-07-13 18:52:12,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:12,178 INFO L225 Difference]: With dead ends: 5143 [2021-07-13 18:52:12,178 INFO L226 Difference]: Without dead ends: 4443 [2021-07-13 18:52:12,178 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 80.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:52:12,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4443 states. [2021-07-13 18:52:12,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4443 to 4427. [2021-07-13 18:52:12,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4427 states, 4426 states have (on average 3.2790329868956167) internal successors, (14513), 4426 states have internal predecessors, (14513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14513 transitions. [2021-07-13 18:52:12,318 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14513 transitions. Word has length 52 [2021-07-13 18:52:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:12,318 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14513 transitions. [2021-07-13 18:52:12,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14513 transitions. [2021-07-13 18:52:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:52:12,330 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:12,330 INFO L508 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] [2021-07-13 18:52:12,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:52:12,330 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:12,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1730681128, now seen corresponding path program 1 times [2021-07-13 18:52:12,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:12,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619001380] [2021-07-13 18:52:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:12,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:12,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:12,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619001380] [2021-07-13 18:52:12,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619001380] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:12,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:12,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:52:12,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290980669] [2021-07-13 18:52:12,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:52:12,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:12,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:52:12,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:52:12,462 INFO L87 Difference]: Start difference. First operand 4427 states and 14513 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) [2021-07-13 18:52:12,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:12,694 INFO L93 Difference]: Finished difference Result 6233 states and 20189 transitions. [2021-07-13 18:52:12,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-13 18:52:12,695 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 [2021-07-13 18:52:12,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:12,715 INFO L225 Difference]: With dead ends: 6233 [2021-07-13 18:52:12,716 INFO L226 Difference]: Without dead ends: 5349 [2021-07-13 18:52:12,717 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 155.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:52:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-07-13 18:52:12,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4205. [2021-07-13 18:52:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2649857278782113) internal successors, (13726), 4204 states have internal predecessors, (13726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:12,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13726 transitions. [2021-07-13 18:52:12,868 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13726 transitions. Word has length 54 [2021-07-13 18:52:12,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:12,868 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13726 transitions. [2021-07-13 18:52:12,869 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) [2021-07-13 18:52:12,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13726 transitions. [2021-07-13 18:52:12,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:52:12,880 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:12,881 INFO L508 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] [2021-07-13 18:52:12,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:52:12,881 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:12,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:12,881 INFO L82 PathProgramCache]: Analyzing trace with hash 245526365, now seen corresponding path program 1 times [2021-07-13 18:52:12,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:12,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456772484] [2021-07-13 18:52:12,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:13,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:13,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456772484] [2021-07-13 18:52:13,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456772484] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:13,000 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:13,000 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:52:13,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139078962] [2021-07-13 18:52:13,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:52:13,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:13,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:52:13,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:52:13,005 INFO L87 Difference]: Start difference. First operand 4205 states and 13726 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-07-13 18:52:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:13,160 INFO L93 Difference]: Finished difference Result 7461 states and 24155 transitions. [2021-07-13 18:52:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 [2021-07-13 18:52:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:13,181 INFO L225 Difference]: With dead ends: 7461 [2021-07-13 18:52:13,181 INFO L226 Difference]: Without dead ends: 5277 [2021-07-13 18:52:13,181 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:52:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2021-07-13 18:52:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 4205. [2021-07-13 18:52:13,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4205 states, 4204 states have (on average 3.2516650808753567) internal successors, (13670), 4204 states have internal predecessors, (13670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13670 transitions. [2021-07-13 18:52:13,318 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13670 transitions. Word has length 54 [2021-07-13 18:52:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:13,319 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13670 transitions. [2021-07-13 18:52:13,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-07-13 18:52:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13670 transitions. [2021-07-13 18:52:13,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:52:13,331 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:13,331 INFO L508 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] [2021-07-13 18:52:13,331 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:52:13,332 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:13,332 INFO L82 PathProgramCache]: Analyzing trace with hash 192553753, now seen corresponding path program 2 times [2021-07-13 18:52:13,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:13,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751482244] [2021-07-13 18:52:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:13,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:13,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:13,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751482244] [2021-07-13 18:52:13,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751482244] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:13,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:13,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:52:13,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239816738] [2021-07-13 18:52:13,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:52:13,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:13,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:52:13,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:52:13,459 INFO L87 Difference]: Start difference. First operand 4205 states and 13670 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-07-13 18:52:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:13,565 INFO L93 Difference]: Finished difference Result 5341 states and 17118 transitions. [2021-07-13 18:52:13,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 18:52:13,566 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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 [2021-07-13 18:52:13,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:13,575 INFO L225 Difference]: With dead ends: 5341 [2021-07-13 18:52:13,575 INFO L226 Difference]: Without dead ends: 2597 [2021-07-13 18:52:13,576 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 84.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:52:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-07-13 18:52:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 2405. [2021-07-13 18:52:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2404 states have (on average 3.074459234608985) internal successors, (7391), 2404 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:13,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 7391 transitions. [2021-07-13 18:52:13,638 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 7391 transitions. Word has length 54 [2021-07-13 18:52:13,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:13,639 INFO L482 AbstractCegarLoop]: Abstraction has 2405 states and 7391 transitions. [2021-07-13 18:52:13,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 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) [2021-07-13 18:52:13,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 7391 transitions. [2021-07-13 18:52:13,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:52:13,645 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:13,645 INFO L508 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] [2021-07-13 18:52:13,645 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:52:13,645 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:13,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:13,646 INFO L82 PathProgramCache]: Analyzing trace with hash -663113566, now seen corresponding path program 1 times [2021-07-13 18:52:13,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:13,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74888160] [2021-07-13 18:52:13,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:13,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:13,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:13,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74888160] [2021-07-13 18:52:13,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74888160] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:13,716 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:13,716 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:52:13,716 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984453321] [2021-07-13 18:52:13,717 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:52:13,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:13,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:52:13,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:52:13,718 INFO L87 Difference]: Start difference. First operand 2405 states and 7391 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-07-13 18:52:13,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:13,823 INFO L93 Difference]: Finished difference Result 2882 states and 8749 transitions. [2021-07-13 18:52:13,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:52:13,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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 [2021-07-13 18:52:13,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:13,831 INFO L225 Difference]: With dead ends: 2882 [2021-07-13 18:52:13,831 INFO L226 Difference]: Without dead ends: 2186 [2021-07-13 18:52:13,834 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:52:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2186 states. [2021-07-13 18:52:13,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2186 to 2186. [2021-07-13 18:52:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2186 states, 2185 states have (on average 3.0187643020594965) internal successors, (6596), 2185 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2186 states to 2186 states and 6596 transitions. [2021-07-13 18:52:13,876 INFO L78 Accepts]: Start accepts. Automaton has 2186 states and 6596 transitions. Word has length 55 [2021-07-13 18:52:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:13,876 INFO L482 AbstractCegarLoop]: Abstraction has 2186 states and 6596 transitions. [2021-07-13 18:52:13,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 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) [2021-07-13 18:52:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states and 6596 transitions. [2021-07-13 18:52:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-13 18:52:13,881 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:13,881 INFO L508 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] [2021-07-13 18:52:13,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:52:13,882 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:13,882 INFO L82 PathProgramCache]: Analyzing trace with hash 328653495, now seen corresponding path program 1 times [2021-07-13 18:52:13,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:13,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198019528] [2021-07-13 18:52:13,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:13,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:13,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198019528] [2021-07-13 18:52:13,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198019528] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:13,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:13,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:52:13,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62847552] [2021-07-13 18:52:13,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:52:13,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:13,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:52:13,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:52:13,955 INFO L87 Difference]: Start difference. First operand 2186 states and 6596 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:14,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:14,086 INFO L93 Difference]: Finished difference Result 2123 states and 6230 transitions. [2021-07-13 18:52:14,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:52:14,086 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-07-13 18:52:14,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:14,091 INFO L225 Difference]: With dead ends: 2123 [2021-07-13 18:52:14,091 INFO L226 Difference]: Without dead ends: 1571 [2021-07-13 18:52:14,092 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 94.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:52:14,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2021-07-13 18:52:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1571. [2021-07-13 18:52:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1570 states have (on average 2.875796178343949) internal successors, (4515), 1570 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:14,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 4515 transitions. [2021-07-13 18:52:14,124 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 4515 transitions. Word has length 56 [2021-07-13 18:52:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:14,124 INFO L482 AbstractCegarLoop]: Abstraction has 1571 states and 4515 transitions. [2021-07-13 18:52:14,124 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:52:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 4515 transitions. [2021-07-13 18:52:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-13 18:52:14,128 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:52:14,128 INFO L508 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] [2021-07-13 18:52:14,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 18:52:14,129 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:52:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:52:14,129 INFO L82 PathProgramCache]: Analyzing trace with hash 55032350, now seen corresponding path program 1 times [2021-07-13 18:52:14,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:52:14,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96012571] [2021-07-13 18:52:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:52:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:52:14,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:52:14,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:52:14,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96012571] [2021-07-13 18:52:14,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96012571] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:52:14,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:52:14,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:52:14,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616506407] [2021-07-13 18:52:14,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:52:14,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:52:14,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:52:14,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:52:14,209 INFO L87 Difference]: Start difference. First operand 1571 states and 4515 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) [2021-07-13 18:52:14,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:52:14,291 INFO L93 Difference]: Finished difference Result 1139 states and 3192 transitions. [2021-07-13 18:52:14,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-13 18:52:14,291 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 [2021-07-13 18:52:14,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:52:14,291 INFO L225 Difference]: With dead ends: 1139 [2021-07-13 18:52:14,291 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:52:14,292 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 91.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:52:14,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:52:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:52:14,292 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) [2021-07-13 18:52:14,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:52:14,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-07-13 18:52:14,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:52:14,293 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:52:14,293 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) [2021-07-13 18:52:14,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:52:14,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:52:14,293 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 18:52:14,295 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:52:14,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:52:14 BasicIcfg [2021-07-13 18:52:14,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:52:14,298 INFO L168 Benchmark]: Toolchain (without parser) took 6686.96 ms. Allocated memory was 181.4 MB in the beginning and 554.7 MB in the end (delta: 373.3 MB). Free memory was 145.0 MB in the beginning and 377.8 MB in the end (delta: -232.9 MB). Peak memory consumption was 141.8 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:14,298 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 181.4 MB. Free memory is still 163.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:52:14,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.26 ms. Allocated memory is still 181.4 MB. Free memory was 144.8 MB in the beginning and 157.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:14,299 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.53 ms. Allocated memory is still 181.4 MB. Free memory was 157.5 MB in the beginning and 155.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:14,301 INFO L168 Benchmark]: Boogie Preprocessor took 20.08 ms. Allocated memory is still 181.4 MB. Free memory was 155.4 MB in the beginning and 154.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:14,301 INFO L168 Benchmark]: RCFGBuilder took 419.87 ms. Allocated memory is still 181.4 MB. Free memory was 154.2 MB in the beginning and 130.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:14,301 INFO L168 Benchmark]: TraceAbstraction took 5712.31 ms. Allocated memory was 181.4 MB in the beginning and 554.7 MB in the end (delta: 373.3 MB). Free memory was 130.2 MB in the beginning and 377.8 MB in the end (delta: -247.6 MB). Peak memory consumption was 126.8 MB. Max. memory is 8.0 GB. [2021-07-13 18:52:14,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 181.4 MB. Free memory is still 163.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 491.26 ms. Allocated memory is still 181.4 MB. Free memory was 144.8 MB in the beginning and 157.5 MB in the end (delta: -12.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.53 ms. Allocated memory is still 181.4 MB. Free memory was 157.5 MB in the beginning and 155.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.08 ms. Allocated memory is still 181.4 MB. Free memory was 155.4 MB in the beginning and 154.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 419.87 ms. Allocated memory is still 181.4 MB. Free memory was 154.2 MB in the beginning and 130.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5712.31 ms. Allocated memory was 181.4 MB in the beginning and 554.7 MB in the end (delta: 373.3 MB). Free memory was 130.2 MB in the beginning and 377.8 MB in the end (delta: -247.6 MB). Peak memory consumption was 126.8 MB. Max. memory is 8.0 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, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5576.5ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 146.0ms, AutomataDifference: 2181.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 207.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1111 SDtfs, 1579 SDslu, 3768 SDs, 0 SdLazy, 485 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 412.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1292.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6006occurred in iteration=1, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1321.1ms AutomataMinimizationTime, 10 MinimizatonAttempts, 6029 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 77.4ms SsaConstructionTime, 224.6ms SatisfiabilityAnalysisTime, 1208.2ms InterpolantComputationTime, 532 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 522 ConstructedInterpolants, 0 QuantifiedInterpolants, 2698 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...