/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/safe016_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9b7772ad7705253c1305067fc38dc9bc7271fbe3-9b7772a [2021-04-15 01:00:36,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-15 01:00:36,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-15 01:00:36,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-15 01:00:36,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-15 01:00:36,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-15 01:00:36,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-15 01:00:36,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-04-15 01:00:36,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-15 01:00:36,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-15 01:00:36,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-04-15 01:00:36,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-04-15 01:00:36,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-15 01:00:36,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-15 01:00:36,673 INFO L138 SettingsManager]: * Use SBE=true [2021-04-15 01:00:36,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-15 01:00:36,674 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-15 01:00:36,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-15 01:00:36,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-15 01:00:36,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-15 01:00:36,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-15 01:00:36,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-15 01:00:36,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-15 01:00:36,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-15 01:00:36,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:00:36,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-15 01:00:36,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-15 01:00:36,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-15 01:00:36,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-15 01:00:36,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-15 01:00:36,677 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-04-15 01:00:36,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-15 01:00:36,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-15 01:00:36,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-15 01:00:36,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-15 01:00:37,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-15 01:00:37,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-15 01:00:37,001 INFO L275 PluginConnector]: CDTParser initialized [2021-04-15 01:00:37,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2021-04-15 01:00:37,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354b5decb/2470734d89af43918fcb3000bebf586e/FLAG3a84374a2 [2021-04-15 01:00:37,473 INFO L306 CDTParser]: Found 1 translation units. [2021-04-15 01:00:37,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i [2021-04-15 01:00:37,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354b5decb/2470734d89af43918fcb3000bebf586e/FLAG3a84374a2 [2021-04-15 01:00:37,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/354b5decb/2470734d89af43918fcb3000bebf586e [2021-04-15 01:00:37,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-15 01:00:37,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-15 01:00:37,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-15 01:00:37,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-15 01:00:37,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-15 01:00:37,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54f04abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37, skipping insertion in model container [2021-04-15 01:00:37,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-15 01:00:37,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-15 01:00:37,669 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i[949,962] [2021-04-15 01:00:37,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:00:37,742 INFO L203 MainTranslator]: Completed pre-run [2021-04-15 01:00:37,749 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.opt.i[949,962] [2021-04-15 01:00:37,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-15 01:00:37,826 INFO L208 MainTranslator]: Completed translation [2021-04-15 01:00:37,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37 WrapperNode [2021-04-15 01:00:37,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-15 01:00:37,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-04-15 01:00:37,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-04-15 01:00:37,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-04-15 01:00:37,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-04-15 01:00:37,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-15 01:00:37,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-15 01:00:37,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-15 01:00:37,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... [2021-04-15 01:00:37,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-15 01:00:37,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-15 01:00:37,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-15 01:00:37,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-15 01:00:37,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-15 01:00:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-15 01:00:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-04-15 01:00:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-15 01:00:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-15 01:00:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-04-15 01:00:37,916 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-04-15 01:00:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-04-15 01:00:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-04-15 01:00:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-04-15 01:00:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-04-15 01:00:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-04-15 01:00:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-04-15 01:00:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-15 01:00:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-04-15 01:00:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-15 01:00:37,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-15 01:00:37,918 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-04-15 01:00:38,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-15 01:00:38,201 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-04-15 01:00:38,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:00:38 BoogieIcfgContainer [2021-04-15 01:00:38,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-15 01:00:38,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-15 01:00:38,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-15 01:00:38,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-15 01:00:38,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.04 01:00:37" (1/3) ... [2021-04-15 01:00:38,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d70f57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:00:38, skipping insertion in model container [2021-04-15 01:00:38,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.04 01:00:37" (2/3) ... [2021-04-15 01:00:38,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d70f57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.04 01:00:38, skipping insertion in model container [2021-04-15 01:00:38,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.04 01:00:38" (3/3) ... [2021-04-15 01:00:38,207 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2021-04-15 01:00:38,211 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-04-15 01:00:38,211 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-15 01:00:38,214 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-15 01:00:38,214 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,234 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,235 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,235 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,235 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,236 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,237 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,238 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,239 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,239 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,239 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,240 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,241 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,241 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,244 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,244 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,245 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,245 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,246 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,246 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,246 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,247 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,247 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,248 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-04-15 01:00:38,248 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-04-15 01:00:38,260 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-04-15 01:00:38,273 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-15 01:00:38,273 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-15 01:00:38,273 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-15 01:00:38,273 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-15 01:00:38,273 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-15 01:00:38,273 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-15 01:00:38,273 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-15 01:00:38,273 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-15 01:00:38,280 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 96 places, 85 transitions, 190 flow [2021-04-15 01:00:43,880 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49019 states, 49017 states have (on average 4.388579472427933) internal successors, (215115), 49018 states have internal predecessors, (215115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand has 49019 states, 49017 states have (on average 4.388579472427933) internal successors, (215115), 49018 states have internal predecessors, (215115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:44,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-04-15 01:00:44,047 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:44,048 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:44,048 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:44,053 INFO L82 PathProgramCache]: Analyzing trace with hash -898252917, now seen corresponding path program 1 times [2021-04-15 01:00:44,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:44,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446295642] [2021-04-15 01:00:44,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:44,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:44,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446295642] [2021-04-15 01:00:44,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:44,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:00:44,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662424508] [2021-04-15 01:00:44,395 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:00:44,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:44,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:00:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:00:44,606 INFO L87 Difference]: Start difference. First operand has 49019 states, 49017 states have (on average 4.388579472427933) internal successors, (215115), 49018 states have internal predecessors, (215115), 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 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:46,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:46,135 INFO L93 Difference]: Finished difference Result 131063 states and 560479 transitions. [2021-04-15 01:00:46,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:00:46,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-04-15 01:00:46,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:46,536 INFO L225 Difference]: With dead ends: 131063 [2021-04-15 01:00:46,537 INFO L226 Difference]: Without dead ends: 39363 [2021-04-15 01:00:46,538 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:00:46,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39363 states. [2021-04-15 01:00:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39363 to 31491. [2021-04-15 01:00:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31491 states, 31490 states have (on average 4.1825023817084785) internal successors, (131707), 31490 states have internal predecessors, (131707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31491 states to 31491 states and 131707 transitions. [2021-04-15 01:00:48,054 INFO L78 Accepts]: Start accepts. Automaton has 31491 states and 131707 transitions. Word has length 43 [2021-04-15 01:00:48,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:48,055 INFO L480 AbstractCegarLoop]: Abstraction has 31491 states and 131707 transitions. [2021-04-15 01:00:48,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:48,056 INFO L276 IsEmpty]: Start isEmpty. Operand 31491 states and 131707 transitions. [2021-04-15 01:00:48,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-15 01:00:48,100 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:48,101 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:48,101 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-15 01:00:48,101 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash 935780970, now seen corresponding path program 1 times [2021-04-15 01:00:48,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:48,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607959157] [2021-04-15 01:00:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:48,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607959157] [2021-04-15 01:00:48,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:48,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:48,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927885322] [2021-04-15 01:00:48,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:48,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:48,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:48,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:48,217 INFO L87 Difference]: Start difference. First operand 31491 states and 131707 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:48,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:48,809 INFO L93 Difference]: Finished difference Result 48075 states and 198543 transitions. [2021-04-15 01:00:48,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:00:48,809 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-04-15 01:00:48,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:49,031 INFO L225 Difference]: With dead ends: 48075 [2021-04-15 01:00:49,031 INFO L226 Difference]: Without dead ends: 36411 [2021-04-15 01:00:49,032 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36411 states. [2021-04-15 01:00:49,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36411 to 29067. [2021-04-15 01:00:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29067 states, 29066 states have (on average 4.152033303516136) internal successors, (120683), 29066 states have internal predecessors, (120683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:49,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29067 states to 29067 states and 120683 transitions. [2021-04-15 01:00:49,937 INFO L78 Accepts]: Start accepts. Automaton has 29067 states and 120683 transitions. Word has length 45 [2021-04-15 01:00:49,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:49,938 INFO L480 AbstractCegarLoop]: Abstraction has 29067 states and 120683 transitions. [2021-04-15 01:00:49,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:49,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29067 states and 120683 transitions. [2021-04-15 01:00:49,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-04-15 01:00:49,969 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:49,969 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:49,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-15 01:00:49,970 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:49,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:49,970 INFO L82 PathProgramCache]: Analyzing trace with hash -333900342, now seen corresponding path program 1 times [2021-04-15 01:00:49,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:49,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180102476] [2021-04-15 01:00:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:50,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:50,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180102476] [2021-04-15 01:00:50,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:50,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:50,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951875330] [2021-04-15 01:00:50,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:50,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:50,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:50,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:50,233 INFO L87 Difference]: Start difference. First operand 29067 states and 120683 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:50,616 INFO L93 Difference]: Finished difference Result 43147 states and 176867 transitions. [2021-04-15 01:00:50,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:00:50,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-04-15 01:00:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:50,709 INFO L225 Difference]: With dead ends: 43147 [2021-04-15 01:00:50,710 INFO L226 Difference]: Without dead ends: 33771 [2021-04-15 01:00:50,710 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 125.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:51,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33771 states. [2021-04-15 01:00:51,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33771 to 26507. [2021-04-15 01:00:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26507 states, 26506 states have (on average 4.132007847279861) internal successors, (109523), 26506 states have internal predecessors, (109523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26507 states to 26507 states and 109523 transitions. [2021-04-15 01:00:51,683 INFO L78 Accepts]: Start accepts. Automaton has 26507 states and 109523 transitions. Word has length 45 [2021-04-15 01:00:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:51,683 INFO L480 AbstractCegarLoop]: Abstraction has 26507 states and 109523 transitions. [2021-04-15 01:00:51,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 26507 states and 109523 transitions. [2021-04-15 01:00:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-04-15 01:00:51,900 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:51,904 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:51,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-15 01:00:51,905 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:51,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:51,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1255835285, now seen corresponding path program 1 times [2021-04-15 01:00:51,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:51,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226819369] [2021-04-15 01:00:51,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:51,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:51,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226819369] [2021-04-15 01:00:51,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:51,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:51,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064580023] [2021-04-15 01:00:51,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:51,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:51,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:51,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:51,998 INFO L87 Difference]: Start difference. First operand 26507 states and 109523 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:52,323 INFO L93 Difference]: Finished difference Result 36395 states and 148667 transitions. [2021-04-15 01:00:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:00:52,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-04-15 01:00:52,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:52,414 INFO L225 Difference]: With dead ends: 36395 [2021-04-15 01:00:52,414 INFO L226 Difference]: Without dead ends: 30827 [2021-04-15 01:00:52,414 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30827 states. [2021-04-15 01:00:53,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30827 to 23307. [2021-04-15 01:00:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23307 states, 23306 states have (on average 4.113061014331073) internal successors, (95859), 23306 states have internal predecessors, (95859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23307 states to 23307 states and 95859 transitions. [2021-04-15 01:00:53,186 INFO L78 Accepts]: Start accepts. Automaton has 23307 states and 95859 transitions. Word has length 47 [2021-04-15 01:00:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:53,187 INFO L480 AbstractCegarLoop]: Abstraction has 23307 states and 95859 transitions. [2021-04-15 01:00:53,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:53,187 INFO L276 IsEmpty]: Start isEmpty. Operand 23307 states and 95859 transitions. [2021-04-15 01:00:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-04-15 01:00:53,221 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:53,221 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:53,221 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-15 01:00:53,221 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:53,222 INFO L82 PathProgramCache]: Analyzing trace with hash -1971835253, now seen corresponding path program 1 times [2021-04-15 01:00:53,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:53,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420863449] [2021-04-15 01:00:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:53,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420863449] [2021-04-15 01:00:53,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:53,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:53,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822265601] [2021-04-15 01:00:53,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:53,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:53,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:53,308 INFO L87 Difference]: Start difference. First operand 23307 states and 95859 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:53,846 INFO L93 Difference]: Finished difference Result 40347 states and 163103 transitions. [2021-04-15 01:00:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:00:53,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-04-15 01:00:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:53,931 INFO L225 Difference]: With dead ends: 40347 [2021-04-15 01:00:53,931 INFO L226 Difference]: Without dead ends: 28731 [2021-04-15 01:00:53,931 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 123.1ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:54,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28731 states. [2021-04-15 01:00:54,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28731 to 19499. [2021-04-15 01:00:54,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19499 states, 19498 states have (on average 4.035439532259719) internal successors, (78683), 19498 states have internal predecessors, (78683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19499 states to 19499 states and 78683 transitions. [2021-04-15 01:00:54,422 INFO L78 Accepts]: Start accepts. Automaton has 19499 states and 78683 transitions. Word has length 48 [2021-04-15 01:00:54,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:54,423 INFO L480 AbstractCegarLoop]: Abstraction has 19499 states and 78683 transitions. [2021-04-15 01:00:54,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:54,423 INFO L276 IsEmpty]: Start isEmpty. Operand 19499 states and 78683 transitions. [2021-04-15 01:00:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-04-15 01:00:54,645 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:54,645 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:54,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-04-15 01:00:54,646 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:54,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:54,646 INFO L82 PathProgramCache]: Analyzing trace with hash -44297014, now seen corresponding path program 1 times [2021-04-15 01:00:54,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:54,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141154181] [2021-04-15 01:00:54,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:54,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141154181] [2021-04-15 01:00:54,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:54,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:54,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596374606] [2021-04-15 01:00:54,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:54,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:54,783 INFO L87 Difference]: Start difference. First operand 19499 states and 78683 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-04-15 01:00:55,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:55,133 INFO L93 Difference]: Finished difference Result 35603 states and 142885 transitions. [2021-04-15 01:00:55,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 01:00:55,135 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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 [2021-04-15 01:00:55,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:55,197 INFO L225 Difference]: With dead ends: 35603 [2021-04-15 01:00:55,197 INFO L226 Difference]: Without dead ends: 21483 [2021-04-15 01:00:55,198 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-04-15 01:00:55,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21483 states. [2021-04-15 01:00:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21483 to 16299. [2021-04-15 01:00:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16299 states, 16298 states have (on average 4.038593692477605) internal successors, (65821), 16298 states have internal predecessors, (65821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16299 states to 16299 states and 65821 transitions. [2021-04-15 01:00:55,647 INFO L78 Accepts]: Start accepts. Automaton has 16299 states and 65821 transitions. Word has length 49 [2021-04-15 01:00:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:55,647 INFO L480 AbstractCegarLoop]: Abstraction has 16299 states and 65821 transitions. [2021-04-15 01:00:55,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 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) [2021-04-15 01:00:55,647 INFO L276 IsEmpty]: Start isEmpty. Operand 16299 states and 65821 transitions. [2021-04-15 01:00:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-04-15 01:00:55,666 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:55,666 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:55,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-04-15 01:00:55,667 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:55,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:55,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1618933028, now seen corresponding path program 2 times [2021-04-15 01:00:55,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:55,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028347843] [2021-04-15 01:00:55,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:55,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028347843] [2021-04-15 01:00:55,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:55,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:00:55,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810943826] [2021-04-15 01:00:55,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:00:55,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:55,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:00:55,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:00:55,723 INFO L87 Difference]: Start difference. First operand 16299 states and 65821 transitions. 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) [2021-04-15 01:00:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:55,991 INFO L93 Difference]: Finished difference Result 17579 states and 70605 transitions. [2021-04-15 01:00:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:00:55,992 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 [2021-04-15 01:00:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:56,034 INFO L225 Difference]: With dead ends: 17579 [2021-04-15 01:00:56,035 INFO L226 Difference]: Without dead ends: 15339 [2021-04-15 01:00:56,035 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:00:56,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15339 states. [2021-04-15 01:00:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15339 to 15339. [2021-04-15 01:00:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15339 states, 15338 states have (on average 4.022232364063111) internal successors, (61693), 15338 states have internal predecessors, (61693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15339 states to 15339 states and 61693 transitions. [2021-04-15 01:00:56,344 INFO L78 Accepts]: Start accepts. Automaton has 15339 states and 61693 transitions. Word has length 49 [2021-04-15 01:00:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:56,344 INFO L480 AbstractCegarLoop]: Abstraction has 15339 states and 61693 transitions. [2021-04-15 01:00:56,344 INFO L481 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) [2021-04-15 01:00:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 15339 states and 61693 transitions. [2021-04-15 01:00:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-04-15 01:00:56,363 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:56,363 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:56,364 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-04-15 01:00:56,364 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:56,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:56,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1982090405, now seen corresponding path program 1 times [2021-04-15 01:00:56,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:56,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55847843] [2021-04-15 01:00:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:56,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:56,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55847843] [2021-04-15 01:00:56,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:56,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:56,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883738496] [2021-04-15 01:00:56,420 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:56,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:56,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:56,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:56,420 INFO L87 Difference]: Start difference. First operand 15339 states and 61693 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:56,679 INFO L93 Difference]: Finished difference Result 28267 states and 112365 transitions. [2021-04-15 01:00:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-04-15 01:00:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-04-15 01:00:56,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:56,736 INFO L225 Difference]: With dead ends: 28267 [2021-04-15 01:00:56,736 INFO L226 Difference]: Without dead ends: 19339 [2021-04-15 01:00:56,737 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 125.0ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19339 states. [2021-04-15 01:00:57,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19339 to 14379. [2021-04-15 01:00:57,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14379 states, 14378 states have (on average 3.9608429545138404) internal successors, (56949), 14378 states have internal predecessors, (56949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14379 states to 14379 states and 56949 transitions. [2021-04-15 01:00:57,235 INFO L78 Accepts]: Start accepts. Automaton has 14379 states and 56949 transitions. Word has length 50 [2021-04-15 01:00:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:57,235 INFO L480 AbstractCegarLoop]: Abstraction has 14379 states and 56949 transitions. [2021-04-15 01:00:57,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 14379 states and 56949 transitions. [2021-04-15 01:00:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-04-15 01:00:57,258 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:57,258 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:57,258 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-04-15 01:00:57,258 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash -402143653, now seen corresponding path program 1 times [2021-04-15 01:00:57,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:57,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668220404] [2021-04-15 01:00:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:57,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:57,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668220404] [2021-04-15 01:00:57,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:57,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-15 01:00:57,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509675714] [2021-04-15 01:00:57,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-15 01:00:57,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:57,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-15 01:00:57,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-15 01:00:57,306 INFO L87 Difference]: Start difference. First operand 14379 states and 56949 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-04-15 01:00:57,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:57,473 INFO L93 Difference]: Finished difference Result 20151 states and 79017 transitions. [2021-04-15 01:00:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-15 01:00:57,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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 [2021-04-15 01:00:57,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:57,506 INFO L225 Difference]: With dead ends: 20151 [2021-04-15 01:00:57,506 INFO L226 Difference]: Without dead ends: 13815 [2021-04-15 01:00:57,507 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-04-15 01:00:57,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13815 states. [2021-04-15 01:00:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13815 to 13815. [2021-04-15 01:00:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13815 states, 13814 states have (on average 3.9314463587664688) internal successors, (54309), 13814 states have internal predecessors, (54309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13815 states to 13815 states and 54309 transitions. [2021-04-15 01:00:57,943 INFO L78 Accepts]: Start accepts. Automaton has 13815 states and 54309 transitions. Word has length 51 [2021-04-15 01:00:57,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:57,943 INFO L480 AbstractCegarLoop]: Abstraction has 13815 states and 54309 transitions. [2021-04-15 01:00:57,943 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 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) [2021-04-15 01:00:57,944 INFO L276 IsEmpty]: Start isEmpty. Operand 13815 states and 54309 transitions. [2021-04-15 01:00:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-04-15 01:00:57,963 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:57,963 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:57,963 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-04-15 01:00:57,963 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:57,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1260690443, now seen corresponding path program 1 times [2021-04-15 01:00:57,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:57,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469407870] [2021-04-15 01:00:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:58,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:58,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469407870] [2021-04-15 01:00:58,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:58,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-15 01:00:58,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176730581] [2021-04-15 01:00:58,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-15 01:00:58,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:58,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-15 01:00:58,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-04-15 01:00:58,019 INFO L87 Difference]: Start difference. First operand 13815 states and 54309 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:58,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:58,159 INFO L93 Difference]: Finished difference Result 17433 states and 67317 transitions. [2021-04-15 01:00:58,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-15 01:00:58,160 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-04-15 01:00:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:58,185 INFO L225 Difference]: With dead ends: 17433 [2021-04-15 01:00:58,185 INFO L226 Difference]: Without dead ends: 11529 [2021-04-15 01:00:58,186 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 65.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-04-15 01:00:58,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11529 states. [2021-04-15 01:00:58,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11529 to 11529. [2021-04-15 01:00:58,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11529 states, 11528 states have (on average 3.8350971547536434) internal successors, (44211), 11528 states have internal predecessors, (44211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11529 states to 11529 states and 44211 transitions. [2021-04-15 01:00:58,401 INFO L78 Accepts]: Start accepts. Automaton has 11529 states and 44211 transitions. Word has length 52 [2021-04-15 01:00:58,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:58,401 INFO L480 AbstractCegarLoop]: Abstraction has 11529 states and 44211 transitions. [2021-04-15 01:00:58,401 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:58,401 INFO L276 IsEmpty]: Start isEmpty. Operand 11529 states and 44211 transitions. [2021-04-15 01:00:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-04-15 01:00:58,419 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:58,419 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:58,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-04-15 01:00:58,419 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:58,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:58,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1598368606, now seen corresponding path program 1 times [2021-04-15 01:00:58,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:58,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458901958] [2021-04-15 01:00:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:58,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458901958] [2021-04-15 01:00:58,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:58,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:58,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988120622] [2021-04-15 01:00:58,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:58,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:58,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:58,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:58,478 INFO L87 Difference]: Start difference. First operand 11529 states and 44211 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-04-15 01:00:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:58,624 INFO L93 Difference]: Finished difference Result 12060 states and 45261 transitions. [2021-04-15 01:00:58,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-15 01:00:58,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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 [2021-04-15 01:00:58,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:58,642 INFO L225 Difference]: With dead ends: 12060 [2021-04-15 01:00:58,642 INFO L226 Difference]: Without dead ends: 7524 [2021-04-15 01:00:58,643 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 76.6ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-04-15 01:00:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7524 states. [2021-04-15 01:00:58,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7524 to 7524. [2021-04-15 01:00:58,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 7523 states have (on average 3.687890469227702) internal successors, (27744), 7523 states have internal predecessors, (27744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:58,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 27744 transitions. [2021-04-15 01:00:58,951 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 27744 transitions. Word has length 53 [2021-04-15 01:00:58,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:58,951 INFO L480 AbstractCegarLoop]: Abstraction has 7524 states and 27744 transitions. [2021-04-15 01:00:58,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 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) [2021-04-15 01:00:58,952 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 27744 transitions. [2021-04-15 01:00:58,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-04-15 01:00:58,962 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:58,962 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:58,962 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-04-15 01:00:58,962 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:58,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:58,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2111249849, now seen corresponding path program 1 times [2021-04-15 01:00:58,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:58,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638243690] [2021-04-15 01:00:58,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:59,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638243690] [2021-04-15 01:00:59,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:59,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-15 01:00:59,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608066721] [2021-04-15 01:00:59,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-15 01:00:59,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:59,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-15 01:00:59,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-04-15 01:00:59,038 INFO L87 Difference]: Start difference. First operand 7524 states and 27744 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 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) [2021-04-15 01:00:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:59,181 INFO L93 Difference]: Finished difference Result 6498 states and 23505 transitions. [2021-04-15 01:00:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-04-15 01:00:59,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 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 [2021-04-15 01:00:59,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:59,188 INFO L225 Difference]: With dead ends: 6498 [2021-04-15 01:00:59,188 INFO L226 Difference]: Without dead ends: 2950 [2021-04-15 01:00:59,189 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2021-04-15 01:00:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-04-15 01:00:59,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2950. [2021-04-15 01:00:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2949 states have (on average 3.5489996609020005) internal successors, (10466), 2949 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 10466 transitions. [2021-04-15 01:00:59,255 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 10466 transitions. Word has length 55 [2021-04-15 01:00:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:59,255 INFO L480 AbstractCegarLoop]: Abstraction has 2950 states and 10466 transitions. [2021-04-15 01:00:59,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 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) [2021-04-15 01:00:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 10466 transitions. [2021-04-15 01:00:59,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-04-15 01:00:59,259 INFO L543 BasicCegarLoop]: Found error trace [2021-04-15 01:00:59,259 INFO L551 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-15 01:00:59,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-04-15 01:00:59,260 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-15 01:00:59,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-15 01:00:59,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1969675130, now seen corresponding path program 1 times [2021-04-15 01:00:59,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-15 01:00:59,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229860680] [2021-04-15 01:00:59,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-15 01:00:59,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-15 01:00:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-15 01:00:59,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229860680] [2021-04-15 01:00:59,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-15 01:00:59,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-15 01:00:59,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090271029] [2021-04-15 01:00:59,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-15 01:00:59,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-15 01:00:59,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-15 01:00:59,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-04-15 01:00:59,346 INFO L87 Difference]: Start difference. First operand 2950 states and 10466 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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) [2021-04-15 01:00:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-15 01:00:59,395 INFO L93 Difference]: Finished difference Result 2788 states and 9872 transitions. [2021-04-15 01:00:59,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-15 01:00:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 [2021-04-15 01:00:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-15 01:00:59,395 INFO L225 Difference]: With dead ends: 2788 [2021-04-15 01:00:59,395 INFO L226 Difference]: Without dead ends: 0 [2021-04-15 01:00:59,396 INFO L807 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-04-15 01:00:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-15 01:00:59,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-15 01:00:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-15 01:00:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-15 01:00:59,396 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2021-04-15 01:00:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-15 01:00:59,396 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-15 01:00:59,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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) [2021-04-15 01:00:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-15 01:00:59,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-15 01:00:59,397 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-04-15 01:00:59,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.04 01:00:59 BasicIcfg [2021-04-15 01:00:59,401 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-15 01:00:59,404 INFO L168 Benchmark]: Toolchain (without parser) took 21901.30 ms. Allocated memory was 385.9 MB in the beginning and 11.9 GB in the end (delta: 11.5 GB). Free memory was 349.3 MB in the beginning and 10.1 GB in the end (delta: -9.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. [2021-04-15 01:00:59,406 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 385.9 MB. Free memory was 367.4 MB in the beginning and 367.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-04-15 01:00:59,406 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.39 ms. Allocated memory is still 385.9 MB. Free memory was 349.0 MB in the beginning and 347.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:59,406 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.86 ms. Allocated memory is still 385.9 MB. Free memory was 347.7 MB in the beginning and 345.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:59,406 INFO L168 Benchmark]: Boogie Preprocessor took 14.66 ms. Allocated memory is still 385.9 MB. Free memory was 345.7 MB in the beginning and 343.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:59,406 INFO L168 Benchmark]: RCFGBuilder took 333.23 ms. Allocated memory is still 385.9 MB. Free memory was 343.6 MB in the beginning and 318.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-04-15 01:00:59,407 INFO L168 Benchmark]: TraceAbstraction took 21197.61 ms. Allocated memory was 385.9 MB in the beginning and 11.9 GB in the end (delta: 11.5 GB). Free memory was 317.3 MB in the beginning and 10.1 GB in the end (delta: -9.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. [2021-04-15 01:00:59,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 385.9 MB. Free memory was 367.4 MB in the beginning and 367.3 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 325.39 ms. Allocated memory is still 385.9 MB. Free memory was 349.0 MB in the beginning and 347.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.86 ms. Allocated memory is still 385.9 MB. Free memory was 347.7 MB in the beginning and 345.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 14.66 ms. Allocated memory is still 385.9 MB. Free memory was 345.7 MB in the beginning and 343.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 333.23 ms. Allocated memory is still 385.9 MB. Free memory was 343.6 MB in the beginning and 318.4 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 21197.61 ms. Allocated memory was 385.9 MB in the beginning and 11.9 GB in the end (delta: 11.5 GB). Free memory was 317.3 MB in the beginning and 10.1 GB in the end (delta: -9.8 GB). Peak memory consumption was 1.7 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21125.9ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 826.5ms, AutomataDifference: 6262.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5607.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1551 SDtfs, 2701 SDslu, 5292 SDs, 0 SdLazy, 714 SolverSat, 164 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 462.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 177 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1250.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49019occurred in iteration=0, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 6930.5ms AutomataMinimizationTime, 13 MinimizatonAttempts, 49376 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.1ms SsaConstructionTime, 237.0ms SatisfiabilityAnalysisTime, 1052.5ms InterpolantComputationTime, 644 NumberOfCodeBlocks, 644 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 631 ConstructedInterpolants, 0 QuantifiedInterpolants, 2729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...