/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/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 23:38:08,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 23:38:08,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 23:38:08,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 23:38:08,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 23:38:08,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 23:38:08,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 23:38:08,872 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 23:38:08,899 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 23:38:08,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 23:38:08,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 23:38:08,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 23:38:08,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 23:38:08,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 23:38:08,901 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 23:38:08,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 23:38:08,902 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 23:38:08,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 23:38:08,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 23:38:08,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 23:38:08,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 23:38:08,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 23:38:08,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 23:38:08,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 23:38:08,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 23:38:08,905 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-21 23:38:08,905 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 23:38:09,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 23:38:09,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 23:38:09,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 23:38:09,153 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 23:38:09,154 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 23:38:09,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-05-21 23:38:09,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca2da7bf/7330414e39b94d139d30e1259b08460d/FLAGa48f17873 [2021-05-21 23:38:09,633 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 23:38:09,634 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2021-05-21 23:38:09,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca2da7bf/7330414e39b94d139d30e1259b08460d/FLAGa48f17873 [2021-05-21 23:38:09,659 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ca2da7bf/7330414e39b94d139d30e1259b08460d [2021-05-21 23:38:09,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 23:38:09,663 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 23:38:09,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 23:38:09,665 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 23:38:09,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 23:38:09,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:38:09" (1/1) ... [2021-05-21 23:38:09,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5e5bbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:09, skipping insertion in model container [2021-05-21 23:38:09,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 11:38:09" (1/1) ... [2021-05-21 23:38:09,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 23:38:09,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 23:38:09,865 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/safe026_tso.opt.i[949,962] [2021-05-21 23:38:09,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:38:09,993 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 23:38:10,001 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/safe026_tso.opt.i[949,962] [2021-05-21 23:38:10,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 23:38:10,063 INFO L208 MainTranslator]: Completed translation [2021-05-21 23:38:10,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10 WrapperNode [2021-05-21 23:38:10,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 23:38:10,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 23:38:10,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 23:38:10,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 23:38:10,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 23:38:10,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 23:38:10,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 23:38:10,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 23:38:10,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (1/1) ... [2021-05-21 23:38:10,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 23:38:10,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 23:38:10,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 23:38:10,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 23:38:10,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (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 23:38:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 23:38:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 23:38:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 23:38:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 23:38:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 23:38:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 23:38:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 23:38:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 23:38:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 23:38:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 23:38:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 23:38:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 23:38:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 23:38:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 23:38:10,148 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 23:38:10,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 23:38:10,375 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 23:38:10,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:38:10 BoogieIcfgContainer [2021-05-21 23:38:10,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 23:38:10,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 23:38:10,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 23:38:10,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 23:38:10,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 11:38:09" (1/3) ... [2021-05-21 23:38:10,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e74684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:38:10, skipping insertion in model container [2021-05-21 23:38:10,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 11:38:10" (2/3) ... [2021-05-21 23:38:10,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e74684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 11:38:10, skipping insertion in model container [2021-05-21 23:38:10,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 11:38:10" (3/3) ... [2021-05-21 23:38:10,381 INFO L111 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2021-05-21 23:38:10,384 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 23:38:10,384 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 23:38:10,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 23:38:10,385 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 23:38:10,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,402 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,402 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,404 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,405 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,406 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,407 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,410 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,410 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,410 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,410 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,411 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,412 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,412 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 23:38:10,413 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 23:38:10,426 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-21 23:38:10,437 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:38:10,437 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:38:10,437 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:38:10,437 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:38:10,438 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:38:10,438 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:38:10,438 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:38:10,438 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 23:38:10,444 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-05-21 23:38:10,802 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 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 23:38:10,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 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 23:38:10,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-21 23:38:10,855 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:10,856 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:38:10,856 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:10,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:10,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1683349452, now seen corresponding path program 1 times [2021-05-21 23:38:10,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:10,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741604675] [2021-05-21 23:38:10,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:11,158 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 23:38:11,159 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:11,159 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741604675] [2021-05-21 23:38:11,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741604675] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:11,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:11,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:11,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372114745] [2021-05-21 23:38:11,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:11,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:11,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:11,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:11,188 INFO L87 Difference]: Start difference. First operand has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:11,540 INFO L93 Difference]: Finished difference Result 15166 states and 51710 transitions. [2021-05-21 23:38:11,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 23:38:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-05-21 23:38:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:11,581 INFO L225 Difference]: With dead ends: 15166 [2021-05-21 23:38:11,581 INFO L226 Difference]: Without dead ends: 5144 [2021-05-21 23:38:11,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:38:11,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5144 states. [2021-05-21 23:38:11,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5144 to 4424. [2021-05-21 23:38:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4424 states, 4423 states have (on average 3.3350666968121185) internal successors, (14751), 4423 states have internal predecessors, (14751), 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 23:38:11,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4424 states to 4424 states and 14751 transitions. [2021-05-21 23:38:11,806 INFO L78 Accepts]: Start accepts. Automaton has 4424 states and 14751 transitions. Word has length 48 [2021-05-21 23:38:11,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:11,809 INFO L482 AbstractCegarLoop]: Abstraction has 4424 states and 14751 transitions. [2021-05-21 23:38:11,810 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 4424 states and 14751 transitions. [2021-05-21 23:38:11,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-21 23:38:11,839 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:11,840 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:38:11,840 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 23:38:11,840 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:11,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:11,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1812882763, now seen corresponding path program 1 times [2021-05-21 23:38:11,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:11,843 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432755913] [2021-05-21 23:38:11,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:12,041 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 23:38:12,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:12,041 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432755913] [2021-05-21 23:38:12,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432755913] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:12,042 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:12,042 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:12,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893304203] [2021-05-21 23:38:12,043 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:12,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:12,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:12,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:12,049 INFO L87 Difference]: Start difference. First operand 4424 states and 14751 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:12,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:12,265 INFO L93 Difference]: Finished difference Result 6380 states and 20859 transitions. [2021-05-21 23:38:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-21 23:38:12,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-05-21 23:38:12,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:12,285 INFO L225 Difference]: With dead ends: 6380 [2021-05-21 23:38:12,285 INFO L226 Difference]: Without dead ends: 5092 [2021-05-21 23:38:12,285 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 140.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:38:12,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5092 states. [2021-05-21 23:38:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5092 to 4244. [2021-05-21 23:38:12,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 4243 states have (on average 3.3153429177468774) internal successors, (14067), 4243 states have internal predecessors, (14067), 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 23:38:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 14067 transitions. [2021-05-21 23:38:12,377 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 14067 transitions. Word has length 50 [2021-05-21 23:38:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:12,377 INFO L482 AbstractCegarLoop]: Abstraction has 4244 states and 14067 transitions. [2021-05-21 23:38:12,377 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 14067 transitions. [2021-05-21 23:38:12,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 23:38:12,385 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:12,385 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 23:38:12,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 23:38:12,385 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:12,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1834011018, now seen corresponding path program 1 times [2021-05-21 23:38:12,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:12,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814272845] [2021-05-21 23:38:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:12,475 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 23:38:12,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:12,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814272845] [2021-05-21 23:38:12,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814272845] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:12,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:12,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 23:38:12,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054229435] [2021-05-21 23:38:12,476 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 23:38:12,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:12,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 23:38:12,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 23:38:12,477 INFO L87 Difference]: Start difference. First operand 4244 states and 14067 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:12,591 INFO L93 Difference]: Finished difference Result 5307 states and 17327 transitions. [2021-05-21 23:38:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 23:38:12,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 23:38:12,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:12,624 INFO L225 Difference]: With dead ends: 5307 [2021-05-21 23:38:12,624 INFO L226 Difference]: Without dead ends: 3907 [2021-05-21 23:38:12,624 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:38:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-05-21 23:38:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3907. [2021-05-21 23:38:12,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3907 states, 3906 states have (on average 3.257552483358935) internal successors, (12724), 3906 states have internal predecessors, (12724), 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 23:38:12,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3907 states to 3907 states and 12724 transitions. [2021-05-21 23:38:12,706 INFO L78 Accepts]: Start accepts. Automaton has 3907 states and 12724 transitions. Word has length 52 [2021-05-21 23:38:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:12,708 INFO L482 AbstractCegarLoop]: Abstraction has 3907 states and 12724 transitions. [2021-05-21 23:38:12,708 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:12,708 INFO L276 IsEmpty]: Start isEmpty. Operand 3907 states and 12724 transitions. [2021-05-21 23:38:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-21 23:38:12,715 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:12,715 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] [2021-05-21 23:38:12,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 23:38:12,715 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:12,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:12,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1631712010, now seen corresponding path program 1 times [2021-05-21 23:38:12,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:12,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115240430] [2021-05-21 23:38:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:12,809 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 23:38:12,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:12,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115240430] [2021-05-21 23:38:12,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115240430] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:12,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:12,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:12,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376685851] [2021-05-21 23:38:12,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:12,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:12,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:12,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:12,814 INFO L87 Difference]: Start difference. First operand 3907 states and 12724 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 23:38:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:12,945 INFO L93 Difference]: Finished difference Result 4015 states and 12697 transitions. [2021-05-21 23:38:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 23:38:12,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 53 [2021-05-21 23:38:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:12,952 INFO L225 Difference]: With dead ends: 4015 [2021-05-21 23:38:12,952 INFO L226 Difference]: Without dead ends: 2827 [2021-05-21 23:38:12,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-05-21 23:38:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-05-21 23:38:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2803. [2021-05-21 23:38:12,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2802 states have (on average 3.109207708779443) internal successors, (8712), 2802 states have internal predecessors, (8712), 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 23:38:13,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 8712 transitions. [2021-05-21 23:38:13,006 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 8712 transitions. Word has length 53 [2021-05-21 23:38:13,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:13,006 INFO L482 AbstractCegarLoop]: Abstraction has 2803 states and 8712 transitions. [2021-05-21 23:38:13,006 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 23:38:13,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 8712 transitions. [2021-05-21 23:38:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 23:38:13,011 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:13,011 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:38:13,011 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 23:38:13,011 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:13,011 INFO L82 PathProgramCache]: Analyzing trace with hash -894699319, now seen corresponding path program 1 times [2021-05-21 23:38:13,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:13,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908121770] [2021-05-21 23:38:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:13,079 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 23:38:13,079 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:13,079 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908121770] [2021-05-21 23:38:13,079 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908121770] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:13,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:13,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 23:38:13,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884177626] [2021-05-21 23:38:13,080 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 23:38:13,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:13,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 23:38:13,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-21 23:38:13,081 INFO L87 Difference]: Start difference. First operand 2803 states and 8712 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:13,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:13,205 INFO L93 Difference]: Finished difference Result 2299 states and 6978 transitions. [2021-05-21 23:38:13,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 23:38:13,205 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-05-21 23:38:13,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:13,209 INFO L225 Difference]: With dead ends: 2299 [2021-05-21 23:38:13,209 INFO L226 Difference]: Without dead ends: 1543 [2021-05-21 23:38:13,210 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 95.9ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-21 23:38:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2021-05-21 23:38:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1399. [2021-05-21 23:38:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 2.9334763948497855) internal successors, (4101), 1398 states have internal predecessors, (4101), 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 23:38:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 4101 transitions. [2021-05-21 23:38:13,235 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 4101 transitions. Word has length 55 [2021-05-21 23:38:13,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:13,235 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 4101 transitions. [2021-05-21 23:38:13,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 23:38:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 4101 transitions. [2021-05-21 23:38:13,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-21 23:38:13,238 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:13,238 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:38:13,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 23:38:13,238 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:13,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:13,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1524632553, now seen corresponding path program 1 times [2021-05-21 23:38:13,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:13,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450581232] [2021-05-21 23:38:13,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:13,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:13,336 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 23:38:13,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:13,337 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450581232] [2021-05-21 23:38:13,337 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450581232] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:13,337 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:13,337 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:13,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917248468] [2021-05-21 23:38:13,337 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:13,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:13,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:13,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:13,339 INFO L87 Difference]: Start difference. First operand 1399 states and 4101 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 23:38:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:13,398 INFO L93 Difference]: Finished difference Result 1954 states and 5764 transitions. [2021-05-21 23:38:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:38:13,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 59 [2021-05-21 23:38:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:13,401 INFO L225 Difference]: With dead ends: 1954 [2021-05-21 23:38:13,401 INFO L226 Difference]: Without dead ends: 756 [2021-05-21 23:38:13,401 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:38:13,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-05-21 23:38:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 756. [2021-05-21 23:38:13,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 756 states, 755 states have (on average 2.8596026490066224) internal successors, (2159), 755 states have internal predecessors, (2159), 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 23:38:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 2159 transitions. [2021-05-21 23:38:13,414 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 2159 transitions. Word has length 59 [2021-05-21 23:38:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:13,414 INFO L482 AbstractCegarLoop]: Abstraction has 756 states and 2159 transitions. [2021-05-21 23:38:13,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 23:38:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 2159 transitions. [2021-05-21 23:38:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-21 23:38:13,415 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 23:38:13,415 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 23:38:13,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 23:38:13,416 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 23:38:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 23:38:13,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1816711385, now seen corresponding path program 2 times [2021-05-21 23:38:13,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 23:38:13,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890767229] [2021-05-21 23:38:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 23:38:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 23:38:13,501 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 23:38:13,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 23:38:13,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890767229] [2021-05-21 23:38:13,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890767229] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 23:38:13,501 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 23:38:13,501 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 23:38:13,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552655610] [2021-05-21 23:38:13,502 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 23:38:13,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 23:38:13,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 23:38:13,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 23:38:13,502 INFO L87 Difference]: Start difference. First operand 756 states and 2159 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 23:38:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 23:38:13,549 INFO L93 Difference]: Finished difference Result 702 states and 1997 transitions. [2021-05-21 23:38:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-21 23:38:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 59 [2021-05-21 23:38:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 23:38:13,549 INFO L225 Difference]: With dead ends: 702 [2021-05-21 23:38:13,549 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 23:38:13,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 58.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-05-21 23:38:13,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 23:38:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 23:38:13,550 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 23:38:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 23:38:13,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 59 [2021-05-21 23:38:13,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 23:38:13,551 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 23:38:13,551 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 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 23:38:13,551 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 23:38:13,551 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:38:13,551 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 23:38:13,551 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-21 23:38:13,552 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-21 23:38:13,553 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 23:38:13,553 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 23:38:13,553 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 23:38:13,553 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 23:38:13,553 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 23:38:13,553 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 23:38:13,553 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 23:38:13,554 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-21 23:38:13,556 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 82 transitions, 179 flow [2021-05-21 23:38:13,775 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 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 23:38:13,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 8008 states, 8006 states have (on average 3.5367224581563828) internal successors, (28315), 8007 states have internal predecessors, (28315), 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 23:38:13,805 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 23:38:13,806 INFO L315 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2021-05-21 23:38:13,806 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 23:38:13,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 11:38:13 BasicIcfg [2021-05-21 23:38:13,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 23:38:13,812 INFO L168 Benchmark]: Toolchain (without parser) took 4145.25 ms. Allocated memory was 362.8 MB in the beginning and 1.1 GB in the end (delta: 692.1 MB). Free memory was 324.9 MB in the beginning and 844.9 MB in the end (delta: -520.0 MB). Peak memory consumption was 173.6 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:13,812 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 362.8 MB. Free memory was 342.9 MB in the beginning and 342.8 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:38:13,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 398.94 ms. Allocated memory is still 362.8 MB. Free memory was 324.7 MB in the beginning and 323.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:13,812 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.42 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 321.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:13,814 INFO L168 Benchmark]: Boogie Preprocessor took 13.01 ms. Allocated memory is still 362.8 MB. Free memory was 321.3 MB in the beginning and 320.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 23:38:13,814 INFO L168 Benchmark]: RCFGBuilder took 275.50 ms. Allocated memory is still 362.8 MB. Free memory was 320.2 MB in the beginning and 295.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:13,814 INFO L168 Benchmark]: TraceAbstraction took 3430.49 ms. Allocated memory was 362.8 MB in the beginning and 1.1 GB in the end (delta: 692.1 MB). Free memory was 294.0 MB in the beginning and 844.9 MB in the end (delta: -550.9 MB). Peak memory consumption was 143.2 MB. Max. memory is 16.0 GB. [2021-05-21 23:38:13,819 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 362.8 MB. Free memory was 342.9 MB in the beginning and 342.8 MB in the end (delta: 75.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 398.94 ms. Allocated memory is still 362.8 MB. Free memory was 324.7 MB in the beginning and 323.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.42 ms. Allocated memory is still 362.8 MB. Free memory was 323.4 MB in the beginning and 321.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.01 ms. Allocated memory is still 362.8 MB. Free memory was 321.3 MB in the beginning and 320.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 275.50 ms. Allocated memory is still 362.8 MB. Free memory was 320.2 MB in the beginning and 295.0 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3430.49 ms. Allocated memory was 362.8 MB in the beginning and 1.1 GB in the end (delta: 692.1 MB). Free memory was 294.0 MB in the beginning and 844.9 MB in the end (delta: -550.9 MB). Peak memory consumption was 143.2 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, 104 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3115.4ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 103.8ms, AutomataDifference: 1190.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 364.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 714 SDtfs, 1193 SDslu, 2607 SDs, 0 SdLazy, 313 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 201.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 663.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8008occurred in iteration=0, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 482.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 1736 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.6ms SsaConstructionTime, 160.8ms SatisfiabilityAnalysisTime, 650.7ms InterpolantComputationTime, 376 NumberOfCodeBlocks, 376 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 1429 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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, 104 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 252.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 29.7ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 221.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8008occurred 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...