/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:34:24,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:34:24,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:34:24,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:34:24,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:34:24,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:34:24,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:34:24,204 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2021-05-21 23:34:24,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:34:24,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:34:24,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:34:24,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:34:24,224 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:34:24,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:34:24,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:34:24,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:34:24,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:34:24,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:34:24,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:34:24,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:34:24,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:34:24,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:34:24,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:34:24,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:34:24,226 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:34:24,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:34:24,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:34:24,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:34:24,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:34:24,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:34:24,481 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:34:24,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2021-05-21 23:34:24,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908f1f2ce/5d1d4045c8d84e05ba93360dc84fc009/FLAG3cbe8f202 [2021-05-21 23:34:24,902 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:34:24,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i [2021-05-21 23:34:24,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908f1f2ce/5d1d4045c8d84e05ba93360dc84fc009/FLAG3cbe8f202 [2021-05-21 23:34:25,246 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/908f1f2ce/5d1d4045c8d84e05ba93360dc84fc009 [2021-05-21 23:34:25,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:34:25,253 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:34:25,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:34:25,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:34:25,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:34:25,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b543860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25, skipping insertion in model container [2021-05-21 23:34:25,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:34:25,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:34:25,412 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i[949,962] [2021-05-21 23:34:25,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:34:25,517 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:34:25,532 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_tso.opt.i[949,962] [2021-05-21 23:34:25,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:34:25,612 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:34:25,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25 WrapperNode [2021-05-21 23:34:25,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:34:25,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:34:25,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:34:25,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:34:25,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:34:25,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:34:25,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:34:25,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:34:25,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,687 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (1/1) ... [2021-05-21 23:34:25,688 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:34:25,689 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:34:25,689 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:34:25,689 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:34:25,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (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 [2021-05-21 23:34:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:34:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:34:25,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:34:25,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:34:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:34:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:34:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:34:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:34:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:34:25,761 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:34:25,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:34:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:34:25,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:34:25,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:34:25,763 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 23:34:26,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:34:26,014 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:34:26,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:34:26 BoogieIcfgContainer [2021-05-21 23:34:26,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:34:26,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:34:26,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:34:26,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:34:26,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:34:25" (1/3) ... [2021-05-21 23:34:26,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b6cf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:34:26, skipping insertion in model container [2021-05-21 23:34:26,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:34:25" (2/3) ... [2021-05-21 23:34:26,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b6cf02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:34:26, skipping insertion in model container [2021-05-21 23:34:26,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:34:26" (3/3) ... [2021-05-21 23:34:26,020 INFO L111 eAbstractionObserver]: Analyzing ICFG safe003_tso.opt.i [2021-05-21 23:34:26,023 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:34:26,023 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:34:26,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:34:26,024 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:34:26,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,044 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,044 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,045 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,045 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,046 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,047 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,048 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,050 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,050 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,050 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,050 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,053 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,054 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,055 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,055 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:34:26,056 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:34:26,070 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:34:26,082 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:34:26,082 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:34:26,082 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:34:26,082 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:34:26,082 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:34:26,083 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:34:26,083 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:34:26,083 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:34:26,089 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:34:26,537 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:34:26,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:34:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-21 23:34:26,601 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:26,601 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:34:26,602 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:26,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:26,608 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-05-21 23:34:26,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:26,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831667818] [2021-05-21 23:34:26,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:26,916 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:26,916 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831667818] [2021-05-21 23:34:26,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831667818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:26,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:26,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:34:26,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829982965] [2021-05-21 23:34:26,920 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:34:26,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:26,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:34:26,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:34:26,953 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-05-21 23:34:27,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:27,223 INFO L93 Difference]: Finished difference Result 11439 states and 39544 transitions. [2021-05-21 23:34:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:34:27,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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 [2021-05-21 23:34:27,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:27,262 INFO L225 Difference]: With dead ends: 11439 [2021-05-21 23:34:27,262 INFO L226 Difference]: Without dead ends: 4334 [2021-05-21 23:34:27,266 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 131.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:34:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4334 states. [2021-05-21 23:34:27,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4334 to 4334. [2021-05-21 23:34:27,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4334 states, 4333 states have (on average 3.3637202861758597) internal successors, (14575), 4333 states have internal predecessors, (14575), 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) [2021-05-21 23:34:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4334 states to 4334 states and 14575 transitions. [2021-05-21 23:34:27,516 INFO L78 Accepts]: Start accepts. Automaton has 4334 states and 14575 transitions. Word has length 49 [2021-05-21 23:34:27,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:27,517 INFO L482 AbstractCegarLoop]: Abstraction has 4334 states and 14575 transitions. [2021-05-21 23:34:27,518 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 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) [2021-05-21 23:34:27,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4334 states and 14575 transitions. [2021-05-21 23:34:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 23:34:27,528 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:27,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:34:27,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:34:27,528 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:27,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:27,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2138163718, now seen corresponding path program 1 times [2021-05-21 23:34:27,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:27,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767095015] [2021-05-21 23:34:27,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:27,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:27,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767095015] [2021-05-21 23:34:27,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767095015] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:27,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:27,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:34:27,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849703389] [2021-05-21 23:34:27,689 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:34:27,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:27,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:34:27,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:34:27,690 INFO L87 Difference]: Start difference. First operand 4334 states and 14575 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:34:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:27,989 INFO L93 Difference]: Finished difference Result 8830 states and 29363 transitions. [2021-05-21 23:34:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 23:34:27,990 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 23:34:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:28,004 INFO L225 Difference]: With dead ends: 8830 [2021-05-21 23:34:28,004 INFO L226 Difference]: Without dead ends: 3223 [2021-05-21 23:34:28,005 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 218.0ms TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2021-05-21 23:34:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2021-05-21 23:34:28,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 2743. [2021-05-21 23:34:28,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2742 states have (on average 3.12873814733771) internal successors, (8579), 2742 states have internal predecessors, (8579), 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) [2021-05-21 23:34:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 8579 transitions. [2021-05-21 23:34:28,094 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 8579 transitions. Word has length 52 [2021-05-21 23:34:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:28,094 INFO L482 AbstractCegarLoop]: Abstraction has 2743 states and 8579 transitions. [2021-05-21 23:34:28,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:34:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 8579 transitions. [2021-05-21 23:34:28,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-21 23:34:28,100 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:28,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:34:28,100 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:34:28,100 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:28,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:28,100 INFO L82 PathProgramCache]: Analyzing trace with hash -804719694, now seen corresponding path program 1 times [2021-05-21 23:34:28,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:28,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333118295] [2021-05-21 23:34:28,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:28,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:28,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333118295] [2021-05-21 23:34:28,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333118295] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:28,178 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:28,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:34:28,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921419675] [2021-05-21 23:34:28,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:34:28,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:28,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:34:28,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:34:28,179 INFO L87 Difference]: Start difference. First operand 2743 states and 8579 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:34:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:28,324 INFO L93 Difference]: Finished difference Result 3023 states and 9413 transitions. [2021-05-21 23:34:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-21 23:34:28,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-05-21 23:34:28,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:28,332 INFO L225 Difference]: With dead ends: 3023 [2021-05-21 23:34:28,332 INFO L226 Difference]: Without dead ends: 1798 [2021-05-21 23:34:28,332 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2021-05-21 23:34:28,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-05-21 23:34:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1798. [2021-05-21 23:34:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1797 states have (on average 3.132999443516973) internal successors, (5630), 1797 states have internal predecessors, (5630), 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) [2021-05-21 23:34:28,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 5630 transitions. [2021-05-21 23:34:28,368 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 5630 transitions. Word has length 56 [2021-05-21 23:34:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:28,368 INFO L482 AbstractCegarLoop]: Abstraction has 1798 states and 5630 transitions. [2021-05-21 23:34:28,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:34:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 5630 transitions. [2021-05-21 23:34:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 23:34:28,371 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:34:28,372 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:34:28,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:34:28,372 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:34:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:34:28,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1506580816, now seen corresponding path program 1 times [2021-05-21 23:34:28,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:34:28,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151574724] [2021-05-21 23:34:28,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:34:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:34:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 23:34:28,480 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:34:28,480 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151574724] [2021-05-21 23:34:28,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151574724] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:34:28,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:34:28,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:34:28,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187505215] [2021-05-21 23:34:28,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:34:28,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:34:28,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:34:28,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:34:28,486 INFO L87 Difference]: Start difference. First operand 1798 states and 5630 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-05-21 23:34:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:34:28,578 INFO L93 Difference]: Finished difference Result 1638 states and 5102 transitions. [2021-05-21 23:34:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:34:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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 57 [2021-05-21 23:34:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:34:28,579 INFO L225 Difference]: With dead ends: 1638 [2021-05-21 23:34:28,579 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:34:28,580 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 101.4ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 23:34:28,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:34:28,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:34:28,580 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) [2021-05-21 23:34:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:34:28,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-05-21 23:34:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:34:28,580 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:34:28,580 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 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) [2021-05-21 23:34:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:34:28,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:34:28,581 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:34:28,581 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:34:28,583 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:34:28,586 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:34:28,587 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:34:28,587 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:34:28,588 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:34:28,592 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:34:28,592 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:34:28,592 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:34:28,592 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:34:28,595 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-05-21 23:34:28,884 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:34:28,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-05-21 23:34:28,929 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:34:28,929 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:34:28,929 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:34:28,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:34:28 BasicIcfg [2021-05-21 23:34:28,932 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:34:28,932 INFO L168 Benchmark]: Toolchain (without parser) took 3679.75 ms. Allocated memory was 400.6 MB in the beginning and 929.0 MB in the end (delta: 528.5 MB). Free memory was 362.9 MB in the beginning and 686.2 MB in the end (delta: -323.3 MB). Peak memory consumption was 205.6 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:28,933 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 400.6 MB. Free memory is still 380.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:34:28,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.99 ms. Allocated memory is still 400.6 MB. Free memory was 362.7 MB in the beginning and 361.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:28,934 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 400.6 MB. Free memory was 361.2 MB in the beginning and 359.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:28,935 INFO L168 Benchmark]: Boogie Preprocessor took 27.74 ms. Allocated memory is still 400.6 MB. Free memory was 359.2 MB in the beginning and 358.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:34:28,936 INFO L168 Benchmark]: RCFGBuilder took 326.57 ms. Allocated memory is still 400.6 MB. Free memory was 358.2 MB in the beginning and 334.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:28,937 INFO L168 Benchmark]: TraceAbstraction took 2915.46 ms. Allocated memory was 400.6 MB in the beginning and 929.0 MB in the end (delta: 528.5 MB). Free memory was 334.1 MB in the beginning and 686.2 MB in the end (delta: -352.1 MB). Peak memory consumption was 177.4 MB. Max. memory is 16.0 GB. [2021-05-21 23:34:28,941 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 400.6 MB. Free memory is still 380.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 356.99 ms. Allocated memory is still 400.6 MB. Free memory was 362.7 MB in the beginning and 361.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 46.34 ms. Allocated memory is still 400.6 MB. Free memory was 361.2 MB in the beginning and 359.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.74 ms. Allocated memory is still 400.6 MB. Free memory was 359.2 MB in the beginning and 358.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 326.57 ms. Allocated memory is still 400.6 MB. Free memory was 358.2 MB in the beginning and 334.1 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 2915.46 ms. Allocated memory was 400.6 MB in the beginning and 929.0 MB in the end (delta: 528.5 MB). Free memory was 334.1 MB in the beginning and 686.2 MB in the end (delta: -352.1 MB). Peak memory consumption was 177.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2500.9ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 81.5ms, AutomataDifference: 907.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 454.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 483 SDtfs, 781 SDslu, 1765 SDs, 0 SdLazy, 142 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 111.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 584.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 366.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 480 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.9ms SsaConstructionTime, 130.8ms SatisfiabilityAnalysisTime, 402.7ms InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 678 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 342.8ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 44.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 292.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...