/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:27:27,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:27:27,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:27:27,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:27:27,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:27:27,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:27:27,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:27:27,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:27:27,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:27:27,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:27:27,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:27:27,506 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:27:27,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:27:27,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:27:27,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:27:27,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:27:27,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 17:27:27,517 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:27:27,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:27:27,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:27:27,519 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-03-10 17:27:27,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:27:27,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:27:27,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:27:27,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:27:27,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:27:27,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:27:27,547 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:27:27,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:27:27,548 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:27:27,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:27:27,549 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:27:27,549 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:27:27,549 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:27:27,549 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:27:27,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:27:27,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:27:27,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:27:27,550 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:27:27,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:27:27,550 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:27:27,550 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:27:27,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:27:27,550 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:27:27,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:27:27,551 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:27:27,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:27:27,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:27:27,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:27:27,793 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:27:27,794 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:27:27,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2021-03-10 17:27:27,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b4d7a78/b337a574f4244cb19f33b4e89d68dfa6/FLAG3d4334f31 [2021-03-10 17:27:28,410 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:27:28,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i [2021-03-10 17:27:28,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b4d7a78/b337a574f4244cb19f33b4e89d68dfa6/FLAG3d4334f31 [2021-03-10 17:27:28,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b4d7a78/b337a574f4244cb19f33b4e89d68dfa6 [2021-03-10 17:27:28,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:27:28,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:27:28,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:27:28,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:27:28,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:27:28,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:27:28" (1/1) ... [2021-03-10 17:27:28,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a418751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:28, skipping insertion in model container [2021-03-10 17:27:28,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:27:28" (1/1) ... [2021-03-10 17:27:28,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:27:28,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:27:28,970 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i[950,963] [2021-03-10 17:27:29,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:27:29,091 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:27:29,099 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_tso.oepc.i[950,963] [2021-03-10 17:27:29,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:27:29,158 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:27:29,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29 WrapperNode [2021-03-10 17:27:29,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:27:29,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:27:29,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:27:29,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:27:29,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,173 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:27:29,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:27:29,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:27:29,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:27:29,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (1/1) ... [2021-03-10 17:27:29,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:27:29,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:27:29,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:27:29,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:27:29,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (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 [2021-03-10 17:27:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:27:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:27:29,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:27:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:27:29,256 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:27:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:27:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:27:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:27:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:27:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:27:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:27:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:27:29,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:27:29,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:27:29,259 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:27:29,587 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:27:29,588 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:27:29,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:27:29 BoogieIcfgContainer [2021-03-10 17:27:29,591 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:27:29,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:27:29,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:27:29,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:27:29,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:27:28" (1/3) ... [2021-03-10 17:27:29,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a77ee6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:27:29, skipping insertion in model container [2021-03-10 17:27:29,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:27:29" (2/3) ... [2021-03-10 17:27:29,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a77ee6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:27:29, skipping insertion in model container [2021-03-10 17:27:29,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:27:29" (3/3) ... [2021-03-10 17:27:29,596 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_tso.oepc.i [2021-03-10 17:27:29,600 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:27:29,600 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:27:29,603 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:27:29,604 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:27:29,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,632 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,632 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,633 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,634 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,634 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,635 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,635 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,635 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,636 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,637 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,637 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,638 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,638 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,639 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,641 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,643 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,644 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,644 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,647 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,648 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,648 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,653 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,653 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,653 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,656 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:27:29,657 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:27:29,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:27:29,681 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:27:29,681 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:27:29,681 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:27:29,681 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:27:29,681 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:27:29,681 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:27:29,681 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:27:29,681 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:27:29,688 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-03-10 17:27:30,047 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:27:30,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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) [2021-03-10 17:27:30,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:27:30,111 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:30,112 INFO L519 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] [2021-03-10 17:27:30,112 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:30,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:30,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1780672703, now seen corresponding path program 1 times [2021-03-10 17:27:30,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:30,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548104259] [2021-03-10 17:27:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:30,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548104259] [2021-03-10 17:27:30,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:30,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:27:30,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450168605] [2021-03-10 17:27:30,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:27:30,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:30,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:27:30,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:27:30,465 INFO L87 Difference]: Start difference. First operand has 8819 states, 8817 states have (on average 3.5808097992514463) internal successors, (31572), 8818 states have internal predecessors, (31572), 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 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:27:30,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:30,845 INFO L93 Difference]: Finished difference Result 17036 states and 58625 transitions. [2021-03-10 17:27:30,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:27:30,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-03-10 17:27:30,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:30,891 INFO L225 Difference]: With dead ends: 17036 [2021-03-10 17:27:30,891 INFO L226 Difference]: Without dead ends: 5366 [2021-03-10 17:27:30,892 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 192.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5366 states. [2021-03-10 17:27:31,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5366 to 4574. [2021-03-10 17:27:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 3.373059260879073) internal successors, (15425), 4573 states have internal predecessors, (15425), 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) [2021-03-10 17:27:31,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 15425 transitions. [2021-03-10 17:27:31,129 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 15425 transitions. Word has length 40 [2021-03-10 17:27:31,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:31,130 INFO L480 AbstractCegarLoop]: Abstraction has 4574 states and 15425 transitions. [2021-03-10 17:27:31,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:27:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 15425 transitions. [2021-03-10 17:27:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:27:31,141 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:31,141 INFO L519 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] [2021-03-10 17:27:31,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:27:31,146 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:31,148 INFO L82 PathProgramCache]: Analyzing trace with hash 936081420, now seen corresponding path program 1 times [2021-03-10 17:27:31,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:31,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561681144] [2021-03-10 17:27:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:31,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:31,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561681144] [2021-03-10 17:27:31,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:31,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:27:31,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479383163] [2021-03-10 17:27:31,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:27:31,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:31,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:27:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:27:31,349 INFO L87 Difference]: Start difference. First operand 4574 states and 15425 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-03-10 17:27:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:31,514 INFO L93 Difference]: Finished difference Result 6004 states and 20093 transitions. [2021-03-10 17:27:31,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:27:31,515 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 43 [2021-03-10 17:27:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:31,528 INFO L225 Difference]: With dead ends: 6004 [2021-03-10 17:27:31,528 INFO L226 Difference]: Without dead ends: 2842 [2021-03-10 17:27:31,529 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 152.8ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2021-03-10 17:27:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 2842. [2021-03-10 17:27:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2841 states have (on average 3.261175642379444) internal successors, (9265), 2841 states have internal predecessors, (9265), 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) [2021-03-10 17:27:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 9265 transitions. [2021-03-10 17:27:31,607 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 9265 transitions. Word has length 43 [2021-03-10 17:27:31,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:31,608 INFO L480 AbstractCegarLoop]: Abstraction has 2842 states and 9265 transitions. [2021-03-10 17:27:31,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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) [2021-03-10 17:27:31,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 9265 transitions. [2021-03-10 17:27:31,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:27:31,616 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:31,616 INFO L519 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] [2021-03-10 17:27:31,616 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:27:31,616 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:31,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:31,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1354858051, now seen corresponding path program 1 times [2021-03-10 17:27:31,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:31,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217799727] [2021-03-10 17:27:31,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:31,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217799727] [2021-03-10 17:27:31,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:31,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:27:31,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569519826] [2021-03-10 17:27:31,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:27:31,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:31,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:27:31,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:27:31,765 INFO L87 Difference]: Start difference. First operand 2842 states and 9265 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2021-03-10 17:27:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:31,878 INFO L93 Difference]: Finished difference Result 3882 states and 12517 transitions. [2021-03-10 17:27:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-03-10 17:27:31,879 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 46 [2021-03-10 17:27:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:31,886 INFO L225 Difference]: With dead ends: 3882 [2021-03-10 17:27:31,886 INFO L226 Difference]: Without dead ends: 1604 [2021-03-10 17:27:31,886 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 104.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:27:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2021-03-10 17:27:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2021-03-10 17:27:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1604 states, 1603 states have (on average 3.090455396132252) internal successors, (4954), 1603 states have internal predecessors, (4954), 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) [2021-03-10 17:27:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 4954 transitions. [2021-03-10 17:27:31,922 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 4954 transitions. Word has length 46 [2021-03-10 17:27:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:31,922 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 4954 transitions. [2021-03-10 17:27:31,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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) [2021-03-10 17:27:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 4954 transitions. [2021-03-10 17:27:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:27:31,925 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:27:31,925 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:27:31,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:27:31,926 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:27:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:27:31,927 INFO L82 PathProgramCache]: Analyzing trace with hash 903975374, now seen corresponding path program 1 times [2021-03-10 17:27:31,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:27:31,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287488419] [2021-03-10 17:27:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:27:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:27:32,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:27:32,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287488419] [2021-03-10 17:27:32,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:27:32,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:27:32,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881814008] [2021-03-10 17:27:32,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:27:32,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:27:32,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:27:32,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:27:32,060 INFO L87 Difference]: Start difference. First operand 1604 states and 4954 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:27:32,116 INFO L93 Difference]: Finished difference Result 1476 states and 4538 transitions. [2021-03-10 17:27:32,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-10 17:27:32,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 17:27:32,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:27:32,117 INFO L225 Difference]: With dead ends: 1476 [2021-03-10 17:27:32,117 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:27:32,134 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:27:32,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:27:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:27:32,134 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) [2021-03-10 17:27:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:27:32,134 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-03-10 17:27:32,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:27:32,135 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:27:32,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:27:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:27:32,135 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:27:32,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:27:32,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:27:32 BasicIcfg [2021-03-10 17:27:32,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:27:32,139 INFO L168 Benchmark]: Toolchain (without parser) took 3310.55 ms. Allocated memory was 255.9 MB in the beginning and 788.5 MB in the end (delta: 532.7 MB). Free memory was 234.6 MB in the beginning and 694.7 MB in the end (delta: -460.1 MB). Peak memory consumption was 74.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:32,139 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:27:32,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.45 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.0 MB in the beginning and 339.9 MB in the end (delta: -105.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:32,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.40 ms. Allocated memory is still 377.5 MB. Free memory was 339.9 MB in the beginning and 337.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:32,140 INFO L168 Benchmark]: Boogie Preprocessor took 13.62 ms. Allocated memory is still 377.5 MB. Free memory was 337.8 MB in the beginning and 336.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:32,142 INFO L168 Benchmark]: RCFGBuilder took 391.31 ms. Allocated memory is still 377.5 MB. Free memory was 336.2 MB in the beginning and 314.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:32,142 INFO L168 Benchmark]: TraceAbstraction took 2546.62 ms. Allocated memory was 377.5 MB in the beginning and 788.5 MB in the end (delta: 411.0 MB). Free memory was 314.0 MB in the beginning and 694.7 MB in the end (delta: -380.7 MB). Peak memory consumption was 32.0 MB. Max. memory is 16.0 GB. [2021-03-10 17:27:32,146 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 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 327.45 ms. Allocated memory was 255.9 MB in the beginning and 377.5 MB in the end (delta: 121.6 MB). Free memory was 234.0 MB in the beginning and 339.9 MB in the end (delta: -105.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.40 ms. Allocated memory is still 377.5 MB. Free memory was 339.9 MB in the beginning and 337.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.62 ms. Allocated memory is still 377.5 MB. Free memory was 337.8 MB in the beginning and 336.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 391.31 ms. Allocated memory is still 377.5 MB. Free memory was 336.2 MB in the beginning and 314.0 MB in the end (delta: 22.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2546.62 ms. Allocated memory was 377.5 MB in the beginning and 788.5 MB in the end (delta: 411.0 MB). Free memory was 314.0 MB in the beginning and 694.7 MB in the end (delta: -380.7 MB). Peak memory consumption was 32.0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2456.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 82.3ms, AutomataDifference: 823.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 365.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 416 SDtfs, 836 SDslu, 1416 SDs, 0 SdLazy, 152 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 116.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 526.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 341.6ms AutomataMinimizationTime, 4 MinimizatonAttempts, 792 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 52.7ms SsaConstructionTime, 148.5ms SatisfiabilityAnalysisTime, 499.2ms InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 1082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...