/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 10:07:07,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:07:07,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:07:07,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 10:07:07,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:07:07,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:07:07,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:07:07,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:07:07,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:07:07,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:07:07,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:07:07,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:07:07,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:07:07,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:07:07,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:07:07,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:07:07,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 10:07:07,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:07:07,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:07:07,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:07:07,073 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-Separate.epf [2021-06-05 10:07:07,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:07:07,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:07:07,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:07:07,110 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:07:07,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:07:07,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:07:07,111 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:07:07,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:07:07,111 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:07:07,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:07:07,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:07:07,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:07:07,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:07:07,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:07:07,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:07:07,112 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:07:07,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:07:07,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:07:07,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:07:07,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:07:07,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:07:07,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:07:07,113 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:07:07,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:07:07,114 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:07:07,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:07:07,412 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:07:07,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:07:07,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:07:07,444 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:07:07,445 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:07:07,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-05 10:07:07,515 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c672c072/dabf5361abd04cd3a0b0e569971d1656/FLAG84269aedc [2021-06-05 10:07:08,104 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:07:08,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2021-06-05 10:07:08,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c672c072/dabf5361abd04cd3a0b0e569971d1656/FLAG84269aedc [2021-06-05 10:07:08,488 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c672c072/dabf5361abd04cd3a0b0e569971d1656 [2021-06-05 10:07:08,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:07:08,491 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:07:08,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:07:08,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:07:08,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:07:08,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:07:08" (1/1) ... [2021-06-05 10:07:08,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5accfa13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:08, skipping insertion in model container [2021-06-05 10:07:08,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:07:08" (1/1) ... [2021-06-05 10:07:08,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:07:08,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:07:08,721 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_tso.opt.i[949,962] [2021-06-05 10:07:08,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:07:08,906 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:07:08,917 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_tso.opt.i[949,962] [2021-06-05 10:07:08,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:07:09,021 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:07:09,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09 WrapperNode [2021-06-05 10:07:09,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:07:09,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:07:09,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:07:09,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:07:09,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:07:09,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:07:09,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:07:09,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:07:09,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... [2021-06-05 10:07:09,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:07:09,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:07:09,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:07:09,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:07:09,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:07:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:07:09,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 10:07:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:07:09,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:07:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 10:07:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 10:07:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 10:07:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 10:07:09,225 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 10:07:09,225 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 10:07:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:07:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 10:07:09,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:07:09,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:07:09,227 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 10:07:09,558 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:07:09,559 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:07:09,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:07:09 BoogieIcfgContainer [2021-06-05 10:07:09,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:07:09,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:07:09,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:07:09,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:07:09,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:07:08" (1/3) ... [2021-06-05 10:07:09,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de81c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:07:09, skipping insertion in model container [2021-06-05 10:07:09,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:07:09" (2/3) ... [2021-06-05 10:07:09,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2de81c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:07:09, skipping insertion in model container [2021-06-05 10:07:09,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:07:09" (3/3) ... [2021-06-05 10:07:09,567 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2021-06-05 10:07:09,571 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:07:09,572 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:07:09,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:07:09,577 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:07:09,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,609 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,609 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,610 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,610 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,611 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,611 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,612 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,612 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,613 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,613 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,613 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,615 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,620 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,620 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,621 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,621 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,621 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,621 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,622 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,622 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,622 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,622 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,624 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,625 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,625 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,626 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,629 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,630 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,630 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,630 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,632 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,633 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,633 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,633 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:07:09,637 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 10:07:09,658 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 10:07:09,675 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:07:09,675 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:07:09,675 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:07:09,675 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:07:09,675 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:07:09,675 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:07:09,676 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:07:09,676 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:07:09,685 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 83 transitions, 181 flow [2021-06-05 10:07:10,210 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:10,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:10,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-05 10:07:10,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:10,281 INFO L521 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] [2021-06-05 10:07:10,281 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:10,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:10,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-06-05 10:07:10,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:10,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749633691] [2021-06-05 10:07:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:10,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:10,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:10,710 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749633691] [2021-06-05 10:07:10,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749633691] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:10,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:10,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:07:10,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775788324] [2021-06-05 10:07:10,715 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:07:10,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:10,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:07:10,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:07:10,754 INFO L87 Difference]: Start difference. First operand has 9331 states, 9329 states have (on average 3.5626540893986496) internal successors, (33236), 9330 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-06-05 10:07:11,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:11,278 INFO L93 Difference]: Finished difference Result 18267 states and 62922 transitions. [2021-06-05 10:07:11,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:07:11,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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 [2021-06-05 10:07:11,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:11,343 INFO L225 Difference]: With dead ends: 18267 [2021-06-05 10:07:11,344 INFO L226 Difference]: Without dead ends: 6029 [2021-06-05 10:07:11,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 186.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:07:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2021-06-05 10:07:11,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 5099. [2021-06-05 10:07:11,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5099 states, 5098 states have (on average 3.3203216947822676) internal successors, (16927), 5098 states have internal predecessors, (16927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5099 states to 5099 states and 16927 transitions. [2021-06-05 10:07:11,683 INFO L78 Accepts]: Start accepts. Automaton has 5099 states and 16927 transitions. Word has length 48 [2021-06-05 10:07:11,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:11,687 INFO L482 AbstractCegarLoop]: Abstraction has 5099 states and 16927 transitions. [2021-06-05 10:07:11,687 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 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) [2021-06-05 10:07:11,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5099 states and 16927 transitions. [2021-06-05 10:07:11,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-05 10:07:11,708 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:11,709 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:07:11,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:07:11,709 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:11,711 INFO L82 PathProgramCache]: Analyzing trace with hash -153177928, now seen corresponding path program 1 times [2021-06-05 10:07:11,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:11,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958530176] [2021-06-05 10:07:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:11,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:11,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:11,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958530176] [2021-06-05 10:07:11,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958530176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:11,942 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:11,942 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:07:11,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492003664] [2021-06-05 10:07:11,943 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:07:11,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:11,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:07:11,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:07:11,944 INFO L87 Difference]: Start difference. First operand 5099 states and 16927 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:12,106 INFO L93 Difference]: Finished difference Result 5851 states and 19300 transitions. [2021-06-05 10:07:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:07:12,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-05 10:07:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:12,137 INFO L225 Difference]: With dead ends: 5851 [2021-06-05 10:07:12,137 INFO L226 Difference]: Without dead ends: 4871 [2021-06-05 10:07:12,139 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 176.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:07:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-06-05 10:07:12,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4855. [2021-06-05 10:07:12,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4855 states, 4854 states have (on average 3.3014009064688916) internal successors, (16025), 4854 states have internal predecessors, (16025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 16025 transitions. [2021-06-05 10:07:12,317 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 16025 transitions. Word has length 50 [2021-06-05 10:07:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:12,318 INFO L482 AbstractCegarLoop]: Abstraction has 4855 states and 16025 transitions. [2021-06-05 10:07:12,318 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 16025 transitions. [2021-06-05 10:07:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-06-05 10:07:12,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:12,330 INFO L521 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] [2021-06-05 10:07:12,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:07:12,330 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:12,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:12,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1846206727, now seen corresponding path program 1 times [2021-06-05 10:07:12,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:12,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436933832] [2021-06-05 10:07:12,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:12,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:12,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436933832] [2021-06-05 10:07:12,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436933832] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:12,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:12,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:07:12,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828336535] [2021-06-05 10:07:12,456 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:07:12,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:12,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:07:12,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:07:12,457 INFO L87 Difference]: Start difference. First operand 4855 states and 16025 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) [2021-06-05 10:07:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:12,589 INFO L93 Difference]: Finished difference Result 5255 states and 17240 transitions. [2021-06-05 10:07:12,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:07:12,589 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 [2021-06-05 10:07:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:12,630 INFO L225 Difference]: With dead ends: 5255 [2021-06-05 10:07:12,630 INFO L226 Difference]: Without dead ends: 4555 [2021-06-05 10:07:12,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 78.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:07:12,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2021-06-05 10:07:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4427. [2021-06-05 10:07:12,783 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) [2021-06-05 10:07:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4427 states to 4427 states and 14513 transitions. [2021-06-05 10:07:12,805 INFO L78 Accepts]: Start accepts. Automaton has 4427 states and 14513 transitions. Word has length 52 [2021-06-05 10:07:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:12,807 INFO L482 AbstractCegarLoop]: Abstraction has 4427 states and 14513 transitions. [2021-06-05 10:07:12,807 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) [2021-06-05 10:07:12,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4427 states and 14513 transitions. [2021-06-05 10:07:12,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 10:07:12,818 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:12,818 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:07:12,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 10:07:12,819 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:12,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:12,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1730681128, now seen corresponding path program 1 times [2021-06-05 10:07:12,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:12,820 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595264998] [2021-06-05 10:07:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:12,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:12,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:12,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595264998] [2021-06-05 10:07:12,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595264998] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:12,961 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:12,961 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:07:12,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892198766] [2021-06-05 10:07:12,962 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:07:12,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:12,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:07:12,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:07:12,966 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) [2021-06-05 10:07:13,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:13,190 INFO L93 Difference]: Finished difference Result 6233 states and 20189 transitions. [2021-06-05 10:07:13,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:07:13,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-05 10:07:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:13,210 INFO L225 Difference]: With dead ends: 6233 [2021-06-05 10:07:13,210 INFO L226 Difference]: Without dead ends: 5349 [2021-06-05 10:07:13,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 148.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:07:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5349 states. [2021-06-05 10:07:13,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5349 to 4205. [2021-06-05 10:07:13,390 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) [2021-06-05 10:07:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4205 states to 4205 states and 13726 transitions. [2021-06-05 10:07:13,410 INFO L78 Accepts]: Start accepts. Automaton has 4205 states and 13726 transitions. Word has length 54 [2021-06-05 10:07:13,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:13,410 INFO L482 AbstractCegarLoop]: Abstraction has 4205 states and 13726 transitions. [2021-06-05 10:07:13,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:13,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4205 states and 13726 transitions. [2021-06-05 10:07:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 10:07:13,421 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:13,421 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:07:13,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 10:07:13,421 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:13,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:13,422 INFO L82 PathProgramCache]: Analyzing trace with hash 245526365, now seen corresponding path program 1 times [2021-06-05 10:07:13,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:13,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071780456] [2021-06-05 10:07:13,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:13,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:13,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071780456] [2021-06-05 10:07:13,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071780456] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:13,512 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:13,512 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:07:13,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377987177] [2021-06-05 10:07:13,513 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:07:13,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:13,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:07:13,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:07:13,513 INFO L87 Difference]: Start difference. First operand 4205 states and 13726 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:13,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:13,785 INFO L93 Difference]: Finished difference Result 7404 states and 23874 transitions. [2021-06-05 10:07:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:07:13,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-06-05 10:07:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:13,805 INFO L225 Difference]: With dead ends: 7404 [2021-06-05 10:07:13,805 INFO L226 Difference]: Without dead ends: 5516 [2021-06-05 10:07:13,806 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 200.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:07:13,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2021-06-05 10:07:13,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 3757. [2021-06-05 10:07:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3757 states, 3756 states have (on average 3.213525026624068) internal successors, (12070), 3756 states have internal predecessors, (12070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 12070 transitions. [2021-06-05 10:07:13,920 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 12070 transitions. Word has length 54 [2021-06-05 10:07:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:13,920 INFO L482 AbstractCegarLoop]: Abstraction has 3757 states and 12070 transitions. [2021-06-05 10:07:13,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:13,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 12070 transitions. [2021-06-05 10:07:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 10:07:13,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:13,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:07:13,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 10:07:13,928 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:13,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash -663113566, now seen corresponding path program 1 times [2021-06-05 10:07:13,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:13,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120207047] [2021-06-05 10:07:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:13,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:13,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:13,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120207047] [2021-06-05 10:07:13,990 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120207047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:13,990 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:13,990 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:07:13,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847547581] [2021-06-05 10:07:13,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:07:13,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:13,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:07:13,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:07:13,992 INFO L87 Difference]: Start difference. First operand 3757 states and 12070 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) [2021-06-05 10:07:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:14,095 INFO L93 Difference]: Finished difference Result 4785 states and 15145 transitions. [2021-06-05 10:07:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:07:14,095 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 [2021-06-05 10:07:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:14,105 INFO L225 Difference]: With dead ends: 4785 [2021-06-05 10:07:14,106 INFO L226 Difference]: Without dead ends: 3413 [2021-06-05 10:07:14,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 70.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:07:14,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3413 states. [2021-06-05 10:07:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3413 to 3413. [2021-06-05 10:07:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 3412 states have (on average 3.148886283704572) internal successors, (10744), 3412 states have internal predecessors, (10744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:14,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 10744 transitions. [2021-06-05 10:07:14,237 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 10744 transitions. Word has length 55 [2021-06-05 10:07:14,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:14,237 INFO L482 AbstractCegarLoop]: Abstraction has 3413 states and 10744 transitions. [2021-06-05 10:07:14,238 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) [2021-06-05 10:07:14,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 10744 transitions. [2021-06-05 10:07:14,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 10:07:14,247 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:14,247 INFO L521 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] [2021-06-05 10:07:14,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 10:07:14,247 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:14,247 INFO L82 PathProgramCache]: Analyzing trace with hash 328653495, now seen corresponding path program 1 times [2021-06-05 10:07:14,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:14,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102975644] [2021-06-05 10:07:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:14,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:14,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102975644] [2021-06-05 10:07:14,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102975644] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:14,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:14,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:07:14,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992991905] [2021-06-05 10:07:14,316 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:07:14,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:14,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:07:14,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:07:14,317 INFO L87 Difference]: Start difference. First operand 3413 states and 10744 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) [2021-06-05 10:07:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:14,442 INFO L93 Difference]: Finished difference Result 3665 states and 11272 transitions. [2021-06-05 10:07:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:07:14,442 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 [2021-06-05 10:07:14,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:14,449 INFO L225 Difference]: With dead ends: 3665 [2021-06-05 10:07:14,449 INFO L226 Difference]: Without dead ends: 2537 [2021-06-05 10:07:14,450 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 86.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:07:14,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2021-06-05 10:07:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2537. [2021-06-05 10:07:14,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2536 states have (on average 3.0232649842271293) internal successors, (7667), 2536 states have internal predecessors, (7667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:14,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 7667 transitions. [2021-06-05 10:07:14,513 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 7667 transitions. Word has length 56 [2021-06-05 10:07:14,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:14,514 INFO L482 AbstractCegarLoop]: Abstraction has 2537 states and 7667 transitions. [2021-06-05 10:07:14,514 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) [2021-06-05 10:07:14,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 7667 transitions. [2021-06-05 10:07:14,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 10:07:14,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:14,519 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:07:14,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 10:07:14,520 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:14,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:14,520 INFO L82 PathProgramCache]: Analyzing trace with hash -372773896, now seen corresponding path program 1 times [2021-06-05 10:07:14,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:14,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216977097] [2021-06-05 10:07:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:14,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:14,634 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:14,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216977097] [2021-06-05 10:07:14,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216977097] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:14,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:14,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:07:14,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470964638] [2021-06-05 10:07:14,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:07:14,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:14,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:07:14,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:07:14,637 INFO L87 Difference]: Start difference. First operand 2537 states and 7667 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:14,762 INFO L93 Difference]: Finished difference Result 2267 states and 6722 transitions. [2021-06-05 10:07:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 10:07:14,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-05 10:07:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:14,765 INFO L225 Difference]: With dead ends: 2267 [2021-06-05 10:07:14,766 INFO L226 Difference]: Without dead ends: 872 [2021-06-05 10:07:14,766 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 100.2ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:07:14,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-06-05 10:07:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2021-06-05 10:07:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 2.9001148105625716) internal successors, (2526), 871 states have internal predecessors, (2526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 2526 transitions. [2021-06-05 10:07:14,785 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 2526 transitions. Word has length 58 [2021-06-05 10:07:14,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:14,785 INFO L482 AbstractCegarLoop]: Abstraction has 872 states and 2526 transitions. [2021-06-05 10:07:14,785 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:14,785 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 2526 transitions. [2021-06-05 10:07:14,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 10:07:14,787 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:14,787 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:07:14,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 10:07:14,788 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:14,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1259396511, now seen corresponding path program 1 times [2021-06-05 10:07:14,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:14,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746531148] [2021-06-05 10:07:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:14,899 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:14,899 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746531148] [2021-06-05 10:07:14,899 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746531148] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:14,899 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:14,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:07:14,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50914094] [2021-06-05 10:07:14,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:07:14,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:14,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:07:14,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:07:14,901 INFO L87 Difference]: Start difference. First operand 872 states and 2526 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:14,983 INFO L93 Difference]: Finished difference Result 1355 states and 3967 transitions. [2021-06-05 10:07:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:07:14,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-06-05 10:07:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:14,986 INFO L225 Difference]: With dead ends: 1355 [2021-06-05 10:07:14,986 INFO L226 Difference]: Without dead ends: 804 [2021-06-05 10:07:14,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:07:14,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2021-06-05 10:07:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2021-06-05 10:07:15,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 2.8779576587795765) internal successors, (2311), 803 states have internal predecessors, (2311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 2311 transitions. [2021-06-05 10:07:15,005 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 2311 transitions. Word has length 60 [2021-06-05 10:07:15,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:15,005 INFO L482 AbstractCegarLoop]: Abstraction has 804 states and 2311 transitions. [2021-06-05 10:07:15,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:15,005 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 2311 transitions. [2021-06-05 10:07:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-05 10:07:15,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:07:15,007 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 10:07:15,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 10:07:15,008 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:07:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:07:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1424861539, now seen corresponding path program 2 times [2021-06-05 10:07:15,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:07:15,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020054786] [2021-06-05 10:07:15,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:07:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:07:15,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:07:15,125 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:07:15,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020054786] [2021-06-05 10:07:15,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020054786] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:07:15,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:07:15,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:07:15,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267600217] [2021-06-05 10:07:15,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:07:15,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:07:15,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:07:15,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:07:15,128 INFO L87 Difference]: Start difference. First operand 804 states and 2311 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:07:15,230 INFO L93 Difference]: Finished difference Result 750 states and 2149 transitions. [2021-06-05 10:07:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 10:07:15,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-06-05 10:07:15,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:07:15,231 INFO L225 Difference]: With dead ends: 750 [2021-06-05 10:07:15,231 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 10:07:15,231 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 120.5ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:07:15,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 10:07:15,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 10:07:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 10:07:15,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-05 10:07:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:07:15,232 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 10:07:15,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:07:15,232 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 10:07:15,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 10:07:15,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 10:07:15,233 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:07:15,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:07:15 BasicIcfg [2021-06-05 10:07:15,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:07:15,238 INFO L168 Benchmark]: Toolchain (without parser) took 6744.93 ms. Allocated memory was 373.3 MB in the beginning and 1.0 GB in the end (delta: 675.3 MB). Free memory was 335.5 MB in the beginning and 881.6 MB in the end (delta: -546.1 MB). Peak memory consumption was 129.9 MB. Max. memory is 16.0 GB. [2021-06-05 10:07:15,238 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 373.3 MB. Free memory was 354.3 MB in the beginning and 354.2 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:07:15,238 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.32 ms. Allocated memory is still 373.3 MB. Free memory was 335.3 MB in the beginning and 335.2 MB in the end (delta: 116.7 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. [2021-06-05 10:07:15,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.69 ms. Allocated memory is still 373.3 MB. Free memory was 335.2 MB in the beginning and 332.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:07:15,240 INFO L168 Benchmark]: Boogie Preprocessor took 33.63 ms. Allocated memory is still 373.3 MB. Free memory was 332.1 MB in the beginning and 331.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:07:15,240 INFO L168 Benchmark]: RCFGBuilder took 444.27 ms. Allocated memory is still 373.3 MB. Free memory was 331.0 MB in the beginning and 306.1 MB in the end (delta: 24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:07:15,240 INFO L168 Benchmark]: TraceAbstraction took 5674.02 ms. Allocated memory was 373.3 MB in the beginning and 1.0 GB in the end (delta: 675.3 MB). Free memory was 306.1 MB in the beginning and 881.6 MB in the end (delta: -575.5 MB). Peak memory consumption was 101.7 MB. Max. memory is 16.0 GB. [2021-06-05 10:07:15,245 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 373.3 MB. Free memory was 354.3 MB in the beginning and 354.2 MB in the end (delta: 76.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 527.32 ms. Allocated memory is still 373.3 MB. Free memory was 335.3 MB in the beginning and 335.2 MB in the end (delta: 116.7 kB). Peak memory consumption was 7.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.69 ms. Allocated memory is still 373.3 MB. Free memory was 335.2 MB in the beginning and 332.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.63 ms. Allocated memory is still 373.3 MB. Free memory was 332.1 MB in the beginning and 331.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 444.27 ms. Allocated memory is still 373.3 MB. Free memory was 331.0 MB in the beginning and 306.1 MB in the end (delta: 24.9 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 5674.02 ms. Allocated memory was 373.3 MB in the beginning and 1.0 GB in the end (delta: 675.3 MB). Free memory was 306.1 MB in the beginning and 881.6 MB in the end (delta: -575.5 MB). Peak memory consumption was 101.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5560.2ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 148.0ms, AutomataDifference: 2107.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 534.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1047 SDtfs, 1536 SDslu, 3712 SDs, 0 SdLazy, 459 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 378.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1249.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1221.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3977 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.6ms SsaConstructionTime, 186.8ms SatisfiabilityAnalysisTime, 1145.3ms InterpolantComputationTime, 547 NumberOfCodeBlocks, 547 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 537 ConstructedInterpolants, 0 QuantifiedInterpolants, 2199 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...