/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/safe003_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 00:57:54,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 00:57:54,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 00:57:54,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 00:57:54,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 00:57:54,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 00:57:54,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 00:57:54,574 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 [2021-04-15 00:57:54,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 00:57:54,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 00:57:54,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 00:57:54,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 00:57:54,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 00:57:54,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 00:57:54,613 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 00:57:54,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 00:57:54,614 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 00:57:54,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 00:57:54,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 00:57:54,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 00:57:54,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 00:57:54,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 00:57:54,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 00:57:54,615 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 00:57:54,615 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 00:57:54,615 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 00:57:54,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 00:57:54,616 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 00:57:54,616 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 00:57:54,616 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 00:57:54,616 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 00:57:54,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 00:57:54,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 00:57:54,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 00:57:54,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 00:57:54,617 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 00:57:54,617 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 00:57:54,617 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 00:57:54,617 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 00:57:54,617 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 00:57:54,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 00:57:54,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 00:57:54,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 00:57:54,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 00:57:54,942 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 00:57:54,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2021-04-15 00:57:54,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ae2a24c/dfe08ac6135f46e2a78c20882a7bdbdb/FLAG6568be40f [2021-04-15 00:57:55,653 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 00:57:55,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.oepc.i [2021-04-15 00:57:55,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ae2a24c/dfe08ac6135f46e2a78c20882a7bdbdb/FLAG6568be40f [2021-04-15 00:57:56,012 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1ae2a24c/dfe08ac6135f46e2a78c20882a7bdbdb [2021-04-15 00:57:56,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 00:57:56,016 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 00:57:56,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 00:57:56,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 00:57:56,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 00:57:56,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ceee96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56, skipping insertion in model container [2021-04-15 00:57:56,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 00:57:56,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 00:57:56,267 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/safe003_tso.oepc.i[950,963] [2021-04-15 00:57:56,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 00:57:56,449 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 00:57:56,460 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/safe003_tso.oepc.i[950,963] [2021-04-15 00:57:56,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 00:57:56,548 INFO L208 MainTranslator]: Completed translation [2021-04-15 00:57:56,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56 WrapperNode [2021-04-15 00:57:56,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 00:57:56,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 00:57:56,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 00:57:56,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 00:57:56,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 00:57:56,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 00:57:56,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 00:57:56,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 00:57:56,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (1/1) ... [2021-04-15 00:57:56,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 00:57:56,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 00:57:56,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 00:57:56,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 00:57:56,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (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 [2021-04-15 00:57:56,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 00:57:56,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 00:57:56,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 00:57:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 00:57:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 00:57:56,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 00:57:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 00:57:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 00:57:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-15 00:57:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-15 00:57:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 00:57:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 00:57:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 00:57:56,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 00:57:56,719 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 00:57:57,015 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 00:57:57,016 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 00:57:57,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:57:57 BoogieIcfgContainer [2021-04-15 00:57:57,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 00:57:57,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 00:57:57,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 00:57:57,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 00:57:57,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 12:57:56" (1/3) ... [2021-04-15 00:57:57,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7156e2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:57:57, skipping insertion in model container [2021-04-15 00:57:57,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 12:57:56" (2/3) ... [2021-04-15 00:57:57,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7156e2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 12:57:57, skipping insertion in model container [2021-04-15 00:57:57,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 12:57:57" (3/3) ... [2021-04-15 00:57:57,029 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.oepc.i [2021-04-15 00:57:57,034 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 00:57:57,034 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 00:57:57,037 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 00:57:57,038 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 00:57:57,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,081 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,082 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,082 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,083 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,084 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,084 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,084 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,085 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,086 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,087 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,088 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,088 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,088 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,092 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,092 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,094 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,094 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,094 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 00:57:57,098 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 00:57:57,113 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-04-15 00:57:57,130 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 00:57:57,130 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 00:57:57,130 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 00:57:57,130 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 00:57:57,130 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 00:57:57,130 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 00:57:57,131 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 00:57:57,131 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 00:57:57,140 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 75 transitions, 165 flow [2021-04-15 00:57:57,775 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) [2021-04-15 00:57:57,811 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) [2021-04-15 00:57:57,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-04-15 00:57:57,838 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:57:57,838 INFO L551 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] [2021-04-15 00:57:57,839 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:57:57,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:57:57,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1780672703, now seen corresponding path program 1 times [2021-04-15 00:57:57,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:57:57,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817314449] [2021-04-15 00:57:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:57:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:57:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:57:58,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817314449] [2021-04-15 00:57:58,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:57:58,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 00:57:58,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172237780] [2021-04-15 00:57:58,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 00:57:58,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:57:58,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 00:57:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 00:57:58,346 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) [2021-04-15 00:57:58,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:57:58,835 INFO L93 Difference]: Finished difference Result 15206 states and 52085 transitions. [2021-04-15 00:57:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 00:57:58,837 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 [2021-04-15 00:57:58,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:57:58,890 INFO L225 Difference]: With dead ends: 15206 [2021-04-15 00:57:58,891 INFO L226 Difference]: Without dead ends: 3916 [2021-04-15 00:57:58,892 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 238.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 00:57:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2021-04-15 00:57:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3436. [2021-04-15 00:57:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3435 states have (on average 3.2631732168850074) internal successors, (11209), 3435 states have internal predecessors, (11209), 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) [2021-04-15 00:57:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 11209 transitions. [2021-04-15 00:57:59,143 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 11209 transitions. Word has length 40 [2021-04-15 00:57:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:57:59,145 INFO L480 AbstractCegarLoop]: Abstraction has 3436 states and 11209 transitions. [2021-04-15 00:57:59,145 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) [2021-04-15 00:57:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 11209 transitions. [2021-04-15 00:57:59,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-15 00:57:59,156 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:57:59,157 INFO L551 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] [2021-04-15 00:57:59,162 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 00:57:59,162 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:57:59,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:57:59,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2033082139, now seen corresponding path program 1 times [2021-04-15 00:57:59,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:57:59,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793557493] [2021-04-15 00:57:59,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:57:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:57:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:57:59,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793557493] [2021-04-15 00:57:59,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:57:59,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 00:57:59,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913871629] [2021-04-15 00:57:59,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 00:57:59,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:57:59,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 00:57:59,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 00:57:59,309 INFO L87 Difference]: Start difference. First operand 3436 states and 11209 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-04-15 00:57:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:57:59,512 INFO L93 Difference]: Finished difference Result 5080 states and 16342 transitions. [2021-04-15 00:57:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 00:57:59,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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 45 [2021-04-15 00:57:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:57:59,529 INFO L225 Difference]: With dead ends: 5080 [2021-04-15 00:57:59,529 INFO L226 Difference]: Without dead ends: 2932 [2021-04-15 00:57:59,530 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 131.7ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-04-15 00:57:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2932 states. [2021-04-15 00:57:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2932 to 2452. [2021-04-15 00:57:59,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 2451 states have (on average 3.1550387596899223) internal successors, (7733), 2451 states have internal predecessors, (7733), 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) [2021-04-15 00:57:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 7733 transitions. [2021-04-15 00:57:59,643 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 7733 transitions. Word has length 45 [2021-04-15 00:57:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:57:59,643 INFO L480 AbstractCegarLoop]: Abstraction has 2452 states and 7733 transitions. [2021-04-15 00:57:59,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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) [2021-04-15 00:57:59,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 7733 transitions. [2021-04-15 00:57:59,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-15 00:57:59,649 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:57:59,649 INFO L551 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] [2021-04-15 00:57:59,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 00:57:59,649 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:57:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:57:59,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1259929078, now seen corresponding path program 1 times [2021-04-15 00:57:59,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:57:59,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282101579] [2021-04-15 00:57:59,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:57:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:57:59,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:57:59,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282101579] [2021-04-15 00:57:59,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:57:59,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 00:57:59,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4575791] [2021-04-15 00:57:59,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 00:57:59,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:57:59,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 00:57:59,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-15 00:57:59,777 INFO L87 Difference]: Start difference. First operand 2452 states and 7733 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-04-15 00:57:59,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:57:59,933 INFO L93 Difference]: Finished difference Result 2816 states and 8821 transitions. [2021-04-15 00:57:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-15 00:57:59,934 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 47 [2021-04-15 00:57:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:57:59,943 INFO L225 Difference]: With dead ends: 2816 [2021-04-15 00:57:59,943 INFO L226 Difference]: Without dead ends: 1656 [2021-04-15 00:57:59,943 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-04-15 00:57:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-04-15 00:58:00,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1642. [2021-04-15 00:58:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 3.1511273613650213) internal successors, (5171), 1641 states have internal predecessors, (5171), 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) [2021-04-15 00:58:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 5171 transitions. [2021-04-15 00:58:00,015 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 5171 transitions. Word has length 47 [2021-04-15 00:58:00,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:58:00,015 INFO L480 AbstractCegarLoop]: Abstraction has 1642 states and 5171 transitions. [2021-04-15 00:58:00,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-04-15 00:58:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 5171 transitions. [2021-04-15 00:58:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-04-15 00:58:00,019 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 00:58:00,020 INFO L551 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] [2021-04-15 00:58:00,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 00:58:00,020 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 00:58:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 00:58:00,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1765960948, now seen corresponding path program 1 times [2021-04-15 00:58:00,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 00:58:00,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178016136] [2021-04-15 00:58:00,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 00:58:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 00:58:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 00:58:00,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178016136] [2021-04-15 00:58:00,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 00:58:00,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 00:58:00,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062319617] [2021-04-15 00:58:00,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 00:58:00,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 00:58:00,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 00:58:00,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-04-15 00:58:00,156 INFO L87 Difference]: Start difference. First operand 1642 states and 5171 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2021-04-15 00:58:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 00:58:00,270 INFO L93 Difference]: Finished difference Result 1482 states and 4643 transitions. [2021-04-15 00:58:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 00:58:00,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 [2021-04-15 00:58:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 00:58:00,271 INFO L225 Difference]: With dead ends: 1482 [2021-04-15 00:58:00,271 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 00:58:00,275 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 139.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 00:58:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 00:58:00,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 00:58:00,275 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) [2021-04-15 00:58:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 00:58:00,276 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-04-15 00:58:00,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 00:58:00,276 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 00:58:00,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2021-04-15 00:58:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 00:58:00,276 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 00:58:00,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 00:58:00,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 12:58:00 BasicIcfg [2021-04-15 00:58:00,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 00:58:00,281 INFO L168 Benchmark]: Toolchain (without parser) took 4265.60 ms. Allocated memory was 255.9 MB in the beginning and 704.6 MB in the end (delta: 448.8 MB). Free memory was 232.8 MB in the beginning and 543.6 MB in the end (delta: -310.8 MB). Peak memory consumption was 137.6 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:00,282 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 00:58:00,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 530.81 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 232.8 MB in the beginning and 316.8 MB in the end (delta: -84.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:00,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 314.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:00,284 INFO L168 Benchmark]: Boogie Preprocessor took 32.81 ms. Allocated memory is still 354.4 MB. Free memory was 314.7 MB in the beginning and 313.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:00,286 INFO L168 Benchmark]: RCFGBuilder took 379.33 ms. Allocated memory is still 354.4 MB. Free memory was 313.3 MB in the beginning and 290.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:00,286 INFO L168 Benchmark]: TraceAbstraction took 3257.69 ms. Allocated memory was 354.4 MB in the beginning and 704.6 MB in the end (delta: 350.2 MB). Free memory was 290.9 MB in the beginning and 543.6 MB in the end (delta: -252.7 MB). Peak memory consumption was 99.3 MB. Max. memory is 16.0 GB. [2021-04-15 00:58:00,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 255.9 MB. Free memory is still 237.8 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 530.81 ms. Allocated memory was 255.9 MB in the beginning and 354.4 MB in the end (delta: 98.6 MB). Free memory was 232.8 MB in the beginning and 316.8 MB in the end (delta: -84.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.54 ms. Allocated memory is still 354.4 MB. Free memory was 316.8 MB in the beginning and 314.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.81 ms. Allocated memory is still 354.4 MB. Free memory was 314.7 MB in the beginning and 313.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 379.33 ms. Allocated memory is still 354.4 MB. Free memory was 313.3 MB in the beginning and 290.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3257.69 ms. Allocated memory was 354.4 MB in the beginning and 704.6 MB in the end (delta: 350.2 MB). Free memory was 290.9 MB in the beginning and 543.6 MB in the end (delta: -252.7 MB). Peak memory consumption was 99.3 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: 3149.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 79.6ms, AutomataDifference: 1089.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 644.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 442 SDtfs, 789 SDslu, 1619 SDs, 0 SdLazy, 157 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 142.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 651.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8819occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 424.1ms AutomataMinimizationTime, 4 MinimizatonAttempts, 974 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 130.1ms SatisfiabilityAnalysisTime, 573.1ms InterpolantComputationTime, 180 NumberOfCodeBlocks, 180 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 1070 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...