/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/safe029_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:26:31,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:26:31,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:26:31,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:26:31,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:26:31,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:26:31,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:26:31,641 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 [2021-05-21 17:26:31,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:26:31,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:26:31,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:26:31,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:26:31,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:26:31,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:26:31,656 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:26:31,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:26:31,656 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:26:31,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:26:31,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:26:31,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:26:31,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:26:31,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:26:31,658 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:26:31,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:26:31,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:26:31,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:26:31,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:26:31,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:26:31,659 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:26:31,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:26:31,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:26:31,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:26:31,659 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:26:31,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:26:31,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:26:31,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:26:31,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:26:31,909 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:26:31,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-05-21 17:26:31,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36655f663/4e0c71dec7314ccf95cf8a3c0e1170f9/FLAGe130d47c0 [2021-05-21 17:26:32,317 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:26:32,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.opt.i [2021-05-21 17:26:32,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36655f663/4e0c71dec7314ccf95cf8a3c0e1170f9/FLAGe130d47c0 [2021-05-21 17:26:32,684 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36655f663/4e0c71dec7314ccf95cf8a3c0e1170f9 [2021-05-21 17:26:32,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:26:32,686 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:26:32,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:26:32,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:26:32,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:26:32,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:26:32" (1/1) ... [2021-05-21 17:26:32,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4e31ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:32, skipping insertion in model container [2021-05-21 17:26:32,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:26:32" (1/1) ... [2021-05-21 17:26:32,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:26:32,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:26:32,826 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/safe029_tso.opt.i[949,962] [2021-05-21 17:26:32,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:26:32,946 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:26:32,961 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/safe029_tso.opt.i[949,962] [2021-05-21 17:26:32,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:26:33,033 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:26:33,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33 WrapperNode [2021-05-21 17:26:33,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:26:33,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:26:33,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:26:33,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:26:33,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:26:33,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:26:33,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:26:33,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:26:33,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (1/1) ... [2021-05-21 17:26:33,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:26:33,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:26:33,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:26:33,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:26:33,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (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 17:26:33,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:26:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:26:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:26:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:26:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:26:33,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:26:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:26:33,150 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:26:33,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:26:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:26:33,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:26:33,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:26:33,152 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 17:26:33,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:26:33,383 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:26:33,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:26:33 BoogieIcfgContainer [2021-05-21 17:26:33,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:26:33,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:26:33,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:26:33,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:26:33,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:26:32" (1/3) ... [2021-05-21 17:26:33,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a11c14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:26:33, skipping insertion in model container [2021-05-21 17:26:33,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:26:33" (2/3) ... [2021-05-21 17:26:33,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a11c14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:26:33, skipping insertion in model container [2021-05-21 17:26:33,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:26:33" (3/3) ... [2021-05-21 17:26:33,390 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.opt.i [2021-05-21 17:26:33,395 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:26:33,395 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:26:33,395 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:26:33,395 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:26:33,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,420 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,420 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,421 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,421 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,421 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,422 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,423 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,423 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,423 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,423 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,424 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,425 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,425 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,425 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,426 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,427 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,428 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,428 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,428 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,434 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,434 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:26:33,435 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:26:33,450 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 17:26:33,471 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:26:33,472 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:26:33,472 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:26:33,472 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:26:33,472 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:26:33,472 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:26:33,472 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:26:33,472 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:26:33,481 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 65 transitions, 140 flow [2021-05-21 17:26:33,532 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1244 states, 1242 states have (on average 2.6980676328502415) internal successors, (3351), 1243 states have internal predecessors, (3351), 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 17:26:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 1244 states, 1242 states have (on average 2.6980676328502415) internal successors, (3351), 1243 states have internal predecessors, (3351), 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 17:26:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-21 17:26:33,561 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:33,562 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] [2021-05-21 17:26:33,562 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:33,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:33,566 INFO L82 PathProgramCache]: Analyzing trace with hash 361687001, now seen corresponding path program 1 times [2021-05-21 17:26:33,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:33,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125136709] [2021-05-21 17:26:33,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:33,859 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 17:26:33,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:33,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125136709] [2021-05-21 17:26:33,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125136709] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:33,860 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:33,860 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:33,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212528086] [2021-05-21 17:26:33,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:33,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:33,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:33,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:33,878 INFO L87 Difference]: Start difference. First operand has 1244 states, 1242 states have (on average 2.6980676328502415) internal successors, (3351), 1243 states have internal predecessors, (3351), 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 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 17:26:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:34,021 INFO L93 Difference]: Finished difference Result 1699 states and 4421 transitions. [2021-05-21 17:26:34,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:34,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2021-05-21 17:26:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:34,037 INFO L225 Difference]: With dead ends: 1699 [2021-05-21 17:26:34,037 INFO L226 Difference]: Without dead ends: 718 [2021-05-21 17:26:34,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:34,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-05-21 17:26:34,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2021-05-21 17:26:34,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 2.5313807531380754) internal successors, (1815), 717 states have internal predecessors, (1815), 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 17:26:34,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1815 transitions. [2021-05-21 17:26:34,102 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1815 transitions. Word has length 39 [2021-05-21 17:26:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:34,102 INFO L482 AbstractCegarLoop]: Abstraction has 718 states and 1815 transitions. [2021-05-21 17:26:34,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 17:26:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1815 transitions. [2021-05-21 17:26:34,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-21 17:26:34,104 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:34,104 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] [2021-05-21 17:26:34,104 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:26:34,104 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:34,105 INFO L82 PathProgramCache]: Analyzing trace with hash -731721608, now seen corresponding path program 1 times [2021-05-21 17:26:34,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:34,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663258396] [2021-05-21 17:26:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:34,204 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 17:26:34,204 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:34,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663258396] [2021-05-21 17:26:34,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663258396] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:34,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:34,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:34,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184803586] [2021-05-21 17:26:34,208 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:34,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:34,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:34,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:34,212 INFO L87 Difference]: Start difference. First operand 718 states and 1815 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 17:26:34,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:34,298 INFO L93 Difference]: Finished difference Result 846 states and 2118 transitions. [2021-05-21 17:26:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:34,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 41 [2021-05-21 17:26:34,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:34,301 INFO L225 Difference]: With dead ends: 846 [2021-05-21 17:26:34,302 INFO L226 Difference]: Without dead ends: 706 [2021-05-21 17:26:34,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:34,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-05-21 17:26:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-05-21 17:26:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 2.523404255319149) internal successors, (1779), 705 states have internal predecessors, (1779), 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 17:26:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1779 transitions. [2021-05-21 17:26:34,323 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1779 transitions. Word has length 41 [2021-05-21 17:26:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:34,324 INFO L482 AbstractCegarLoop]: Abstraction has 706 states and 1779 transitions. [2021-05-21 17:26:34,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 17:26:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1779 transitions. [2021-05-21 17:26:34,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-05-21 17:26:34,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:34,327 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] [2021-05-21 17:26:34,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:26:34,327 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:34,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:34,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2000709556, now seen corresponding path program 1 times [2021-05-21 17:26:34,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:34,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194078961] [2021-05-21 17:26:34,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:34,415 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 17:26:34,416 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:34,416 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194078961] [2021-05-21 17:26:34,416 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194078961] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:34,416 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:34,416 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:34,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535086927] [2021-05-21 17:26:34,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:34,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:34,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:34,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:34,417 INFO L87 Difference]: Start difference. First operand 706 states and 1779 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 17:26:34,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:34,527 INFO L93 Difference]: Finished difference Result 914 states and 2295 transitions. [2021-05-21 17:26:34,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:34,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 42 [2021-05-21 17:26:34,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:34,530 INFO L225 Difference]: With dead ends: 914 [2021-05-21 17:26:34,530 INFO L226 Difference]: Without dead ends: 530 [2021-05-21 17:26:34,531 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 98.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:34,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-05-21 17:26:34,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 482. [2021-05-21 17:26:34,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 2.318087318087318) internal successors, (1115), 481 states have internal predecessors, (1115), 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 17:26:34,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1115 transitions. [2021-05-21 17:26:34,539 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1115 transitions. Word has length 42 [2021-05-21 17:26:34,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:34,539 INFO L482 AbstractCegarLoop]: Abstraction has 482 states and 1115 transitions. [2021-05-21 17:26:34,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 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 17:26:34,540 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1115 transitions. [2021-05-21 17:26:34,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-21 17:26:34,540 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:34,540 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] [2021-05-21 17:26:34,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:26:34,542 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:34,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1245742841, now seen corresponding path program 1 times [2021-05-21 17:26:34,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:34,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308853689] [2021-05-21 17:26:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:34,621 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 17:26:34,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:34,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308853689] [2021-05-21 17:26:34,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308853689] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:34,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:34,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:26:34,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72798760] [2021-05-21 17:26:34,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:26:34,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:34,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:26:34,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:26:34,624 INFO L87 Difference]: Start difference. First operand 482 states and 1115 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:34,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:34,703 INFO L93 Difference]: Finished difference Result 515 states and 1153 transitions. [2021-05-21 17:26:34,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:26:34,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-05-21 17:26:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:34,706 INFO L225 Difference]: With dead ends: 515 [2021-05-21 17:26:34,706 INFO L226 Difference]: Without dead ends: 380 [2021-05-21 17:26:34,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:34,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-05-21 17:26:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2021-05-21 17:26:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 2.192612137203166) internal successors, (831), 379 states have internal predecessors, (831), 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 17:26:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 831 transitions. [2021-05-21 17:26:34,712 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 831 transitions. Word has length 43 [2021-05-21 17:26:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:34,713 INFO L482 AbstractCegarLoop]: Abstraction has 380 states and 831 transitions. [2021-05-21 17:26:34,713 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:26:34,713 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 831 transitions. [2021-05-21 17:26:34,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-21 17:26:34,714 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:26:34,714 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] [2021-05-21 17:26:34,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:26:34,714 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:26:34,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:26:34,715 INFO L82 PathProgramCache]: Analyzing trace with hash 229905922, now seen corresponding path program 1 times [2021-05-21 17:26:34,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:26:34,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311520378] [2021-05-21 17:26:34,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:26:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:26:34,819 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 17:26:34,819 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:26:34,819 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311520378] [2021-05-21 17:26:34,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311520378] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:26:34,820 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:26:34,820 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:26:34,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038161176] [2021-05-21 17:26:34,820 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:26:34,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:26:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:26:34,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:26:34,821 INFO L87 Difference]: Start difference. First operand 380 states and 831 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2021-05-21 17:26:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:26:34,870 INFO L93 Difference]: Finished difference Result 236 states and 486 transitions. [2021-05-21 17:26:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 17:26:34,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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 [2021-05-21 17:26:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:26:34,870 INFO L225 Difference]: With dead ends: 236 [2021-05-21 17:26:34,870 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:26:34,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:26:34,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:26:34,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:26:34,871 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 17:26:34,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:26:34,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-05-21 17:26:34,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:26:34,871 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:26:34,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 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) [2021-05-21 17:26:34,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:26:34,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:26:34,872 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:26:34,873 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:26:34,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:26:34 BasicIcfg [2021-05-21 17:26:34,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:26:34,875 INFO L168 Benchmark]: Toolchain (without parser) took 2188.63 ms. Allocated memory is still 364.9 MB. Free memory was 327.6 MB in the beginning and 271.0 MB in the end (delta: 56.5 MB). Peak memory consumption was 58.3 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:34,875 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 364.9 MB. Free memory was 345.2 MB in the beginning and 345.1 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:26:34,875 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.67 ms. Allocated memory is still 364.9 MB. Free memory was 327.4 MB in the beginning and 328.2 MB in the end (delta: -786.8 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:34,876 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.78 ms. Allocated memory is still 364.9 MB. Free memory was 328.2 MB in the beginning and 326.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:34,876 INFO L168 Benchmark]: Boogie Preprocessor took 13.23 ms. Allocated memory is still 364.9 MB. Free memory was 326.1 MB in the beginning and 325.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:34,876 INFO L168 Benchmark]: RCFGBuilder took 297.69 ms. Allocated memory is still 364.9 MB. Free memory was 325.0 MB in the beginning and 303.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:34,876 INFO L168 Benchmark]: TraceAbstraction took 1488.53 ms. Allocated memory is still 364.9 MB. Free memory was 303.0 MB in the beginning and 271.0 MB in the end (delta: 32.0 MB). Peak memory consumption was 34.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:26:34,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 364.9 MB. Free memory was 345.2 MB in the beginning and 345.1 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 344.67 ms. Allocated memory is still 364.9 MB. Free memory was 327.4 MB in the beginning and 328.2 MB in the end (delta: -786.8 kB). Peak memory consumption was 9.1 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 38.78 ms. Allocated memory is still 364.9 MB. Free memory was 328.2 MB in the beginning and 326.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.23 ms. Allocated memory is still 364.9 MB. Free memory was 326.1 MB in the beginning and 325.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 297.69 ms. Allocated memory is still 364.9 MB. Free memory was 325.0 MB in the beginning and 303.0 MB in the end (delta: 22.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1488.53 ms. Allocated memory is still 364.9 MB. Free memory was 303.0 MB in the beginning and 271.0 MB in the end (delta: 32.0 MB). Peak memory consumption was 34.1 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 5 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1402.2ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 33.6ms, AutomataDifference: 510.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 59.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 379 SDtfs, 463 SDslu, 1097 SDs, 0 SdLazy, 135 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 422.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1244occurred in iteration=0, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 90.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.0ms SsaConstructionTime, 139.8ms SatisfiabilityAnalysisTime, 413.6ms InterpolantComputationTime, 210 NumberOfCodeBlocks, 210 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 205 ConstructedInterpolants, 0 QuantifiedInterpolants, 623 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...