/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/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 00:12:38,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 00:12:38,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 00:12:38,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 00:12:38,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 00:12:38,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 00:12:38,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 00:12:38,174 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 [2021-06-05 00:12:38,209 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 00:12:38,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 00:12:38,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 00:12:38,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 00:12:38,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 00:12:38,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 00:12:38,213 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 00:12:38,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 00:12:38,213 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 00:12:38,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 00:12:38,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 00:12:38,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 00:12:38,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 00:12:38,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 00:12:38,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 00:12:38,215 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 00:12:38,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 00:12:38,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 00:12:38,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 00:12:38,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 00:12:38,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 00:12:38,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 00:12:38,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 00:12:38,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 00:12:38,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 00:12:38,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 00:12:38,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 00:12:38,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 00:12:38,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 00:12:38,217 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 00:12:38,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 00:12:38,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 00:12:38,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 00:12:38,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 00:12:38,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 00:12:38,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 00:12:38,547 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 00:12:38,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-06-05 00:12:38,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbde1c39f/49a39214651946cca592c11287a66187/FLAGfe0d220dd [2021-06-05 00:12:39,017 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 00:12:39,017 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-06-05 00:12:39,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbde1c39f/49a39214651946cca592c11287a66187/FLAGfe0d220dd [2021-06-05 00:12:39,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbde1c39f/49a39214651946cca592c11287a66187 [2021-06-05 00:12:39,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 00:12:39,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 00:12:39,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 00:12:39,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 00:12:39,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 00:12:39,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46324ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39, skipping insertion in model container [2021-06-05 00:12:39,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 00:12:39,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 00:12:39,586 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/safe014_pso.oepc.i[950,963] [2021-06-05 00:12:39,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:12:39,773 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 00:12:39,782 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/safe014_pso.oepc.i[950,963] [2021-06-05 00:12:39,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 00:12:39,885 INFO L208 MainTranslator]: Completed translation [2021-06-05 00:12:39,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39 WrapperNode [2021-06-05 00:12:39,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 00:12:39,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 00:12:39,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 00:12:39,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 00:12:39,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 00:12:39,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 00:12:39,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 00:12:39,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 00:12:39,952 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (1/1) ... [2021-06-05 00:12:39,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 00:12:39,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 00:12:39,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 00:12:39,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 00:12:39,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (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 [2021-06-05 00:12:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 00:12:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 00:12:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 00:12:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 00:12:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 00:12:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 00:12:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 00:12:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 00:12:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 00:12:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 00:12:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 00:12:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 00:12:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 00:12:40,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 00:12:40,061 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 00:12:40,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 00:12:40,467 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 00:12:40,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:12:40 BoogieIcfgContainer [2021-06-05 00:12:40,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 00:12:40,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 00:12:40,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 00:12:40,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 00:12:40,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 12:12:39" (1/3) ... [2021-06-05 00:12:40,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318236a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:12:40, skipping insertion in model container [2021-06-05 00:12:40,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 12:12:39" (2/3) ... [2021-06-05 00:12:40,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318236a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 12:12:40, skipping insertion in model container [2021-06-05 00:12:40,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 12:12:40" (3/3) ... [2021-06-05 00:12:40,475 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-06-05 00:12:40,480 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 00:12:40,480 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 00:12:40,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 00:12:40,481 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 00:12:40,504 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,504 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,504 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,505 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,505 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,505 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,505 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,506 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,506 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,506 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,506 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,507 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,507 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,508 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,513 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,514 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,514 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,515 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,515 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,516 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,519 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,519 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,519 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,523 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,523 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,524 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,525 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,526 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 00:12:40,527 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 00:12:40,547 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 00:12:40,562 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 00:12:40,562 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 00:12:40,562 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 00:12:40,562 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 00:12:40,562 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 00:12:40,563 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 00:12:40,563 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 00:12:40,563 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 00:12:40,572 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-05 00:12:41,050 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:41,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 00:12:41,145 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:41,146 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:12:41,146 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:41,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:41,151 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-05 00:12:41,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:41,164 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396202509] [2021-06-05 00:12:41,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:41,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:41,584 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396202509] [2021-06-05 00:12:41,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396202509] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:41,585 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:41,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:12:41,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359035969] [2021-06-05 00:12:41,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:12:41,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:41,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:12:41,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:12:41,635 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:42,128 INFO L93 Difference]: Finished difference Result 21089 states and 72806 transitions. [2021-06-05 00:12:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:12:42,129 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 00:12:42,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:42,198 INFO L225 Difference]: With dead ends: 21089 [2021-06-05 00:12:42,198 INFO L226 Difference]: Without dead ends: 7269 [2021-06-05 00:12:42,200 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 180.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:12:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2021-06-05 00:12:42,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 6135. [2021-06-05 00:12:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6134 states have (on average 3.373165960221715) internal successors, (20691), 6134 states have internal predecessors, (20691), 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) [2021-06-05 00:12:42,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 20691 transitions. [2021-06-05 00:12:42,697 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 20691 transitions. Word has length 49 [2021-06-05 00:12:42,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:42,701 INFO L482 AbstractCegarLoop]: Abstraction has 6135 states and 20691 transitions. [2021-06-05 00:12:42,702 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:42,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 20691 transitions. [2021-06-05 00:12:42,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 00:12:42,721 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:42,721 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] [2021-06-05 00:12:42,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 00:12:42,722 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:42,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:42,726 INFO L82 PathProgramCache]: Analyzing trace with hash -831184694, now seen corresponding path program 1 times [2021-06-05 00:12:42,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:42,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107804533] [2021-06-05 00:12:42,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:42,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:42,909 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:42,909 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107804533] [2021-06-05 00:12:42,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107804533] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:42,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:42,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:12:42,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514612750] [2021-06-05 00:12:42,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:12:42,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:42,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:12:42,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:12:42,914 INFO L87 Difference]: Start difference. First operand 6135 states and 20691 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-05 00:12:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:43,347 INFO L93 Difference]: Finished difference Result 9517 states and 31675 transitions. [2021-06-05 00:12:43,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 00:12:43,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-06-05 00:12:43,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:43,408 INFO L225 Difference]: With dead ends: 9517 [2021-06-05 00:12:43,409 INFO L226 Difference]: Without dead ends: 7517 [2021-06-05 00:12:43,410 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 278.4ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-05 00:12:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2021-06-05 00:12:43,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 6104. [2021-06-05 00:12:43,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.362116991643454) internal successors, (20519), 6103 states have internal predecessors, (20519), 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) [2021-06-05 00:12:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 20519 transitions. [2021-06-05 00:12:43,629 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 20519 transitions. Word has length 51 [2021-06-05 00:12:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:43,630 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 20519 transitions. [2021-06-05 00:12:43,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-05 00:12:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 20519 transitions. [2021-06-05 00:12:43,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 00:12:43,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:43,644 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] [2021-06-05 00:12:43,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 00:12:43,645 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:43,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:43,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1915177392, now seen corresponding path program 1 times [2021-06-05 00:12:43,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:43,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290270582] [2021-06-05 00:12:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:43,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:43,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290270582] [2021-06-05 00:12:43,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290270582] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:43,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:43,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:12:43,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463416454] [2021-06-05 00:12:43,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:12:43,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:43,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:12:43,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:12:43,842 INFO L87 Difference]: Start difference. First operand 6104 states and 20519 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-05 00:12:44,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:44,111 INFO L93 Difference]: Finished difference Result 8464 states and 28055 transitions. [2021-06-05 00:12:44,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 00:12:44,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-06-05 00:12:44,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:44,126 INFO L225 Difference]: With dead ends: 8464 [2021-06-05 00:12:44,127 INFO L226 Difference]: Without dead ends: 4308 [2021-06-05 00:12:44,127 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 194.1ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-06-05 00:12:44,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2021-06-05 00:12:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3848. [2021-06-05 00:12:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.260722641018976) internal successors, (12544), 3847 states have internal predecessors, (12544), 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) [2021-06-05 00:12:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12544 transitions. [2021-06-05 00:12:44,239 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12544 transitions. Word has length 51 [2021-06-05 00:12:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:44,241 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12544 transitions. [2021-06-05 00:12:44,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-05 00:12:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12544 transitions. [2021-06-05 00:12:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 00:12:44,250 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:44,250 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] [2021-06-05 00:12:44,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 00:12:44,251 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:44,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1721389007, now seen corresponding path program 1 times [2021-06-05 00:12:44,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:44,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758632614] [2021-06-05 00:12:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:44,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:44,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:44,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758632614] [2021-06-05 00:12:44,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758632614] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:44,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:44,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:12:44,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070743497] [2021-06-05 00:12:44,352 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:12:44,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:44,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:12:44,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:12:44,356 INFO L87 Difference]: Start difference. First operand 3848 states and 12544 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2021-06-05 00:12:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:44,468 INFO L93 Difference]: Finished difference Result 4248 states and 13759 transitions. [2021-06-05 00:12:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:12:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 [2021-06-05 00:12:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:44,481 INFO L225 Difference]: With dead ends: 4248 [2021-06-05 00:12:44,481 INFO L226 Difference]: Without dead ends: 3548 [2021-06-05 00:12:44,482 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:12:44,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2021-06-05 00:12:44,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3548. [2021-06-05 00:12:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3547 states have (on average 3.2320270651254583) internal successors, (11464), 3547 states have internal predecessors, (11464), 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) [2021-06-05 00:12:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 11464 transitions. [2021-06-05 00:12:44,618 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 11464 transitions. Word has length 53 [2021-06-05 00:12:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:44,620 INFO L482 AbstractCegarLoop]: Abstraction has 3548 states and 11464 transitions. [2021-06-05 00:12:44,620 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2021-06-05 00:12:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 11464 transitions. [2021-06-05 00:12:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-05 00:12:44,628 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:44,628 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] [2021-06-05 00:12:44,629 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 00:12:44,632 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:44,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:44,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1678265394, now seen corresponding path program 1 times [2021-06-05 00:12:44,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:44,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883031192] [2021-06-05 00:12:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:44,723 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:44,723 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883031192] [2021-06-05 00:12:44,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883031192] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:44,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:44,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:12:44,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965526696] [2021-06-05 00:12:44,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:12:44,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:44,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:12:44,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:12:44,725 INFO L87 Difference]: Start difference. First operand 3548 states and 11464 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-06-05 00:12:44,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:44,917 INFO L93 Difference]: Finished difference Result 5066 states and 16148 transitions. [2021-06-05 00:12:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 00:12:44,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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 [2021-06-05 00:12:44,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:44,932 INFO L225 Difference]: With dead ends: 5066 [2021-06-05 00:12:44,933 INFO L226 Difference]: Without dead ends: 4246 [2021-06-05 00:12:44,933 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 150.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 00:12:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2021-06-05 00:12:45,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 3198. [2021-06-05 00:12:45,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 3197 states have (on average 3.1995620894588677) internal successors, (10229), 3197 states have internal predecessors, (10229), 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) [2021-06-05 00:12:45,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 10229 transitions. [2021-06-05 00:12:45,065 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 10229 transitions. Word has length 55 [2021-06-05 00:12:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:45,065 INFO L482 AbstractCegarLoop]: Abstraction has 3198 states and 10229 transitions. [2021-06-05 00:12:45,065 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 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) [2021-06-05 00:12:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 10229 transitions. [2021-06-05 00:12:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 00:12:45,072 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:45,072 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:12:45,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 00:12:45,072 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:45,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:45,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1442814938, now seen corresponding path program 1 times [2021-06-05 00:12:45,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:45,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215168631] [2021-06-05 00:12:45,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:45,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:45,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215168631] [2021-06-05 00:12:45,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215168631] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:45,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:45,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:12:45,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065580515] [2021-06-05 00:12:45,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:12:45,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:45,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:12:45,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:12:45,196 INFO L87 Difference]: Start difference. First operand 3198 states and 10229 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:45,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:45,329 INFO L93 Difference]: Finished difference Result 4278 states and 13595 transitions. [2021-06-05 00:12:45,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 00:12:45,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-05 00:12:45,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:45,335 INFO L225 Difference]: With dead ends: 4278 [2021-06-05 00:12:45,335 INFO L226 Difference]: Without dead ends: 2038 [2021-06-05 00:12:45,338 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 00:12:45,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2021-06-05 00:12:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 2038. [2021-06-05 00:12:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 3.1183112420225823) internal successors, (6352), 2037 states have internal predecessors, (6352), 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) [2021-06-05 00:12:45,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 6352 transitions. [2021-06-05 00:12:45,383 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 6352 transitions. Word has length 56 [2021-06-05 00:12:45,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:45,384 INFO L482 AbstractCegarLoop]: Abstraction has 2038 states and 6352 transitions. [2021-06-05 00:12:45,384 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:45,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 6352 transitions. [2021-06-05 00:12:45,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 00:12:45,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:45,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 00:12:45,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 00:12:45,388 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1506580816, now seen corresponding path program 1 times [2021-06-05 00:12:45,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:45,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302792639] [2021-06-05 00:12:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:45,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:45,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302792639] [2021-06-05 00:12:45,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302792639] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:45,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:45,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 00:12:45,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448287620] [2021-06-05 00:12:45,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 00:12:45,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:45,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 00:12:45,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 00:12:45,467 INFO L87 Difference]: Start difference. First operand 2038 states and 6352 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:45,569 INFO L93 Difference]: Finished difference Result 2598 states and 8005 transitions. [2021-06-05 00:12:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 00:12:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 00:12:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:45,575 INFO L225 Difference]: With dead ends: 2598 [2021-06-05 00:12:45,575 INFO L226 Difference]: Without dead ends: 1886 [2021-06-05 00:12:45,576 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:12:45,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-06-05 00:12:45,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-06-05 00:12:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.0870026525198937) internal successors, (5819), 1885 states have internal predecessors, (5819), 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) [2021-06-05 00:12:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 5819 transitions. [2021-06-05 00:12:45,620 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 5819 transitions. Word has length 57 [2021-06-05 00:12:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:45,620 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 5819 transitions. [2021-06-05 00:12:45,621 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 00:12:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 5819 transitions. [2021-06-05 00:12:45,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 00:12:45,624 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:45,625 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] [2021-06-05 00:12:45,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 00:12:45,625 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:45,625 INFO L82 PathProgramCache]: Analyzing trace with hash -208209097, now seen corresponding path program 1 times [2021-06-05 00:12:45,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:45,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005173982] [2021-06-05 00:12:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:45,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:45,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005173982] [2021-06-05 00:12:45,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005173982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:45,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:45,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:12:45,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082452896] [2021-06-05 00:12:45,761 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:12:45,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:45,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:12:45,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:12:45,762 INFO L87 Difference]: Start difference. First operand 1886 states and 5819 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-05 00:12:45,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:45,888 INFO L93 Difference]: Finished difference Result 2096 states and 6322 transitions. [2021-06-05 00:12:45,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 00:12:45,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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 58 [2021-06-05 00:12:45,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:45,893 INFO L225 Difference]: With dead ends: 2096 [2021-06-05 00:12:45,893 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 00:12:45,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 122.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 00:12:45,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 00:12:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1496. [2021-06-05 00:12:45,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 2.985953177257525) internal successors, (4464), 1495 states have internal predecessors, (4464), 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) [2021-06-05 00:12:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 4464 transitions. [2021-06-05 00:12:45,936 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 4464 transitions. Word has length 58 [2021-06-05 00:12:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:45,936 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 4464 transitions. [2021-06-05 00:12:45,936 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 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) [2021-06-05 00:12:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 4464 transitions. [2021-06-05 00:12:45,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 00:12:45,939 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:45,940 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] [2021-06-05 00:12:45,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 00:12:45,940 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:45,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:45,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1710207794, now seen corresponding path program 1 times [2021-06-05 00:12:45,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:45,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601621095] [2021-06-05 00:12:45,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:46,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:46,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601621095] [2021-06-05 00:12:46,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601621095] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:46,057 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:46,057 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 00:12:46,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497374654] [2021-06-05 00:12:46,057 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 00:12:46,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:46,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 00:12:46,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 00:12:46,058 INFO L87 Difference]: Start difference. First operand 1496 states and 4464 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2021-06-05 00:12:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:46,204 INFO L93 Difference]: Finished difference Result 1325 states and 3840 transitions. [2021-06-05 00:12:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 00:12:46,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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 [2021-06-05 00:12:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:46,206 INFO L225 Difference]: With dead ends: 1325 [2021-06-05 00:12:46,207 INFO L226 Difference]: Without dead ends: 693 [2021-06-05 00:12:46,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 120.7ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 00:12:46,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-06-05 00:12:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2021-06-05 00:12:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 2.7846820809248554) internal successors, (1927), 692 states have internal predecessors, (1927), 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) [2021-06-05 00:12:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1927 transitions. [2021-06-05 00:12:46,221 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1927 transitions. Word has length 59 [2021-06-05 00:12:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:46,221 INFO L482 AbstractCegarLoop]: Abstraction has 693 states and 1927 transitions. [2021-06-05 00:12:46,221 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 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) [2021-06-05 00:12:46,221 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1927 transitions. [2021-06-05 00:12:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 00:12:46,223 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 00:12:46,224 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, 1, 1] [2021-06-05 00:12:46,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 00:12:46,224 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 00:12:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 00:12:46,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1185234251, now seen corresponding path program 1 times [2021-06-05 00:12:46,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 00:12:46,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119420480] [2021-06-05 00:12:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 00:12:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 00:12:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 00:12:46,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 00:12:46,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119420480] [2021-06-05 00:12:46,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119420480] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 00:12:46,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 00:12:46,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 00:12:46,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158750928] [2021-06-05 00:12:46,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 00:12:46,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 00:12:46,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 00:12:46,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 00:12:46,347 INFO L87 Difference]: Start difference. First operand 693 states and 1927 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-06-05 00:12:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 00:12:46,411 INFO L93 Difference]: Finished difference Result 639 states and 1765 transitions. [2021-06-05 00:12:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 00:12:46,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-06-05 00:12:46,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 00:12:46,412 INFO L225 Difference]: With dead ends: 639 [2021-06-05 00:12:46,412 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 00:12:46,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 89.1ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-05 00:12:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 00:12:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 00:12:46,413 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) [2021-06-05 00:12:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 00:12:46,414 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-05 00:12:46,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 00:12:46,414 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 00:12:46,414 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-06-05 00:12:46,414 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 00:12:46,414 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 00:12:46,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 00:12:46,416 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 00:12:46,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 12:12:46 BasicIcfg [2021-06-05 00:12:46,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 00:12:46,419 INFO L168 Benchmark]: Toolchain (without parser) took 7011.77 ms. Allocated memory was 360.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 322.9 MB in the beginning and 1.1 GB in the end (delta: -824.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 16.0 GB. [2021-06-05 00:12:46,419 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 360.7 MB. Free memory was 340.8 MB in the beginning and 340.7 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 00:12:46,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.74 ms. Allocated memory is still 360.7 MB. Free memory was 322.7 MB in the beginning and 323.3 MB in the end (delta: -611.4 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-06-05 00:12:46,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.08 ms. Allocated memory is still 360.7 MB. Free memory was 323.3 MB in the beginning and 321.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 00:12:46,421 INFO L168 Benchmark]: Boogie Preprocessor took 32.74 ms. Allocated memory is still 360.7 MB. Free memory was 321.2 MB in the beginning and 320.2 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 00:12:46,423 INFO L168 Benchmark]: RCFGBuilder took 489.37 ms. Allocated memory is still 360.7 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. [2021-06-05 00:12:46,423 INFO L168 Benchmark]: TraceAbstraction took 5947.98 ms. Allocated memory was 360.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 295.0 MB in the beginning and 1.1 GB in the end (delta: -852.6 MB). Peak memory consumption was 229.5 MB. Max. memory is 16.0 GB. [2021-06-05 00:12:46,428 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 360.7 MB. Free memory was 340.8 MB in the beginning and 340.7 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 472.74 ms. Allocated memory is still 360.7 MB. Free memory was 322.7 MB in the beginning and 323.3 MB in the end (delta: -611.4 kB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 59.08 ms. Allocated memory is still 360.7 MB. Free memory was 323.3 MB in the beginning and 321.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.74 ms. Allocated memory is still 360.7 MB. Free memory was 321.2 MB in the beginning and 320.2 MB in the end (delta: 995.8 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 489.37 ms. Allocated memory is still 360.7 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 5947.98 ms. Allocated memory was 360.7 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 295.0 MB in the beginning and 1.1 GB in the end (delta: -852.6 MB). Peak memory consumption was 229.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5855.0ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 161.5ms, AutomataDifference: 2324.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 487.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1060 SDtfs, 1607 SDslu, 3528 SDs, 0 SdLazy, 465 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 418.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1442.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1229.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 4055 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 43.9ms SsaConstructionTime, 218.7ms SatisfiabilityAnalysisTime, 1149.0ms InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 1952 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...