/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/safe009_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:29:28,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:29:28,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:29:28,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:29:28,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:29:28,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:29:28,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:29:28,098 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 [2021-03-10 17:29:28,126 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:29:28,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:29:28,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:29:28,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:29:28,129 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:29:28,129 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:29:28,129 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:29:28,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:29:28,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:29:28,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:29:28,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:29:28,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:29:28,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:29:28,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:29:28,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:29:28,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:29:28,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:29:28,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:29:28,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:29:28,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:29:28,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:29:28,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:29:28,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:29:28,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:29:28,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:29:28,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:29:28,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:29:28,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:29:28,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:29:28,132 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:29:28,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:29:28,132 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:29:28,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:29:28,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:29:28,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:29:28,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:29:28,391 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:29:28,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-10 17:29:28,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0feb924/78bdc713a03b421dbf71b5c276b28145/FLAG228a38c53 [2021-03-10 17:29:28,861 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:29:28,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_tso.oepc.i [2021-03-10 17:29:28,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0feb924/78bdc713a03b421dbf71b5c276b28145/FLAG228a38c53 [2021-03-10 17:29:28,889 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1c0feb924/78bdc713a03b421dbf71b5c276b28145 [2021-03-10 17:29:28,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:29:28,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:29:28,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:29:28,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:29:28,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:29:28,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:29:28" (1/1) ... [2021-03-10 17:29:28,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71111efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:28, skipping insertion in model container [2021-03-10 17:29:28,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:29:28" (1/1) ... [2021-03-10 17:29:28,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:29:28,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:29:29,083 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/safe009_tso.oepc.i[950,963] [2021-03-10 17:29:29,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:29:29,241 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:29:29,249 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/safe009_tso.oepc.i[950,963] [2021-03-10 17:29:29,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:29:29,316 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:29:29,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29 WrapperNode [2021-03-10 17:29:29,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:29:29,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:29:29,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:29:29,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:29:29,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:29:29,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:29:29,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:29:29,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:29:29,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (1/1) ... [2021-03-10 17:29:29,354 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:29:29,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:29:29,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:29:29,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:29:29,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (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 [2021-03-10 17:29:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:29:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:29:29,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:29:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:29:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:29:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:29:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:29:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:29:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:29:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:29:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:29:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:29:29,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:29:29,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:29:29,414 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:29:29,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:29:29,664 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:29:29,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:29:29 BoogieIcfgContainer [2021-03-10 17:29:29,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:29:29,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:29:29,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:29:29,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:29:29,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:29:28" (1/3) ... [2021-03-10 17:29:29,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd204fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:29:29, skipping insertion in model container [2021-03-10 17:29:29,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:29:29" (2/3) ... [2021-03-10 17:29:29,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd204fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:29:29, skipping insertion in model container [2021-03-10 17:29:29,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:29:29" (3/3) ... [2021-03-10 17:29:29,672 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_tso.oepc.i [2021-03-10 17:29:29,676 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:29:29,676 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:29:29,679 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:29:29,680 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:29:29,709 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,709 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,710 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,710 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,710 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,711 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,712 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,712 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,713 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,713 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,714 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,714 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,714 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,715 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,715 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,715 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,716 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,716 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,717 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,717 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,720 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,720 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,720 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,720 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,724 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,724 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,726 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,726 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,726 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:29:29,729 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:29:29,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:29:29,762 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:29:29,762 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:29:29,762 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:29:29,763 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:29:29,763 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:29:29,763 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:29:29,763 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:29:29,763 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:29:29,772 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 73 transitions, 161 flow [2021-03-10 17:29:30,113 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7593 states, 7591 states have (on average 3.553155052035305) internal successors, (26972), 7592 states have internal predecessors, (26972), 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) [2021-03-10 17:29:30,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 7593 states, 7591 states have (on average 3.553155052035305) internal successors, (26972), 7592 states have internal predecessors, (26972), 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) [2021-03-10 17:29:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:29:30,168 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:30,169 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:29:30,169 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:30,173 INFO L82 PathProgramCache]: Analyzing trace with hash 882178177, now seen corresponding path program 1 times [2021-03-10 17:29:30,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:30,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355251615] [2021-03-10 17:29:30,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:30,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355251615] [2021-03-10 17:29:30,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:30,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:29:30,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992921166] [2021-03-10 17:29:30,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:29:30,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:30,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:29:30,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:29:30,509 INFO L87 Difference]: Start difference. First operand has 7593 states, 7591 states have (on average 3.553155052035305) internal successors, (26972), 7592 states have internal predecessors, (26972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:30,794 INFO L93 Difference]: Finished difference Result 17143 states and 58729 transitions. [2021-03-10 17:29:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:29:30,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-03-10 17:29:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:30,836 INFO L225 Difference]: With dead ends: 17143 [2021-03-10 17:29:30,836 INFO L226 Difference]: Without dead ends: 5513 [2021-03-10 17:29:30,837 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 117.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:29:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2021-03-10 17:29:31,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 4601. [2021-03-10 17:29:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4601 states, 4600 states have (on average 3.3543478260869564) internal successors, (15430), 4600 states have internal predecessors, (15430), 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) [2021-03-10 17:29:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4601 states to 4601 states and 15430 transitions. [2021-03-10 17:29:31,100 INFO L78 Accepts]: Start accepts. Automaton has 4601 states and 15430 transitions. Word has length 39 [2021-03-10 17:29:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:31,100 INFO L480 AbstractCegarLoop]: Abstraction has 4601 states and 15430 transitions. [2021-03-10 17:29:31,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 4601 states and 15430 transitions. [2021-03-10 17:29:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 17:29:31,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:31,108 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:29:31,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:29:31,108 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:31,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1735911584, now seen corresponding path program 1 times [2021-03-10 17:29:31,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:31,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686881153] [2021-03-10 17:29:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:31,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686881153] [2021-03-10 17:29:31,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:31,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:31,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111241039] [2021-03-10 17:29:31,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:31,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:31,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:31,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:31,251 INFO L87 Difference]: Start difference. First operand 4601 states and 15430 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:31,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:31,484 INFO L93 Difference]: Finished difference Result 6661 states and 21938 transitions. [2021-03-10 17:29:31,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:29:31,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-03-10 17:29:31,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:31,506 INFO L225 Difference]: With dead ends: 6661 [2021-03-10 17:29:31,506 INFO L226 Difference]: Without dead ends: 4973 [2021-03-10 17:29:31,507 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:29:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4973 states. [2021-03-10 17:29:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4973 to 4301. [2021-03-10 17:29:31,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4301 states, 4300 states have (on average 3.3269767441860467) internal successors, (14306), 4300 states have internal predecessors, (14306), 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) [2021-03-10 17:29:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4301 states to 4301 states and 14306 transitions. [2021-03-10 17:29:31,664 INFO L78 Accepts]: Start accepts. Automaton has 4301 states and 14306 transitions. Word has length 41 [2021-03-10 17:29:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:31,665 INFO L480 AbstractCegarLoop]: Abstraction has 4301 states and 14306 transitions. [2021-03-10 17:29:31,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:31,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4301 states and 14306 transitions. [2021-03-10 17:29:31,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 17:29:31,673 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:31,674 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 17:29:31,674 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:29:31,674 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:31,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:31,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1409436546, now seen corresponding path program 1 times [2021-03-10 17:29:31,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:31,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146660471] [2021-03-10 17:29:31,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:31,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:31,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146660471] [2021-03-10 17:29:31,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:31,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:31,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104201148] [2021-03-10 17:29:31,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:31,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:31,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:31,783 INFO L87 Difference]: Start difference. First operand 4301 states and 14306 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:31,967 INFO L93 Difference]: Finished difference Result 5549 states and 18150 transitions. [2021-03-10 17:29:31,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:29:31,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-03-10 17:29:31,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:31,987 INFO L225 Difference]: With dead ends: 5549 [2021-03-10 17:29:31,987 INFO L226 Difference]: Without dead ends: 4445 [2021-03-10 17:29:31,988 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:29:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4445 states. [2021-03-10 17:29:32,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4445 to 3741. [2021-03-10 17:29:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3741 states, 3740 states have (on average 3.3) internal successors, (12342), 3740 states have internal predecessors, (12342), 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) [2021-03-10 17:29:32,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 12342 transitions. [2021-03-10 17:29:32,071 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 12342 transitions. Word has length 41 [2021-03-10 17:29:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:32,071 INFO L480 AbstractCegarLoop]: Abstraction has 3741 states and 12342 transitions. [2021-03-10 17:29:32,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:29:32,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 12342 transitions. [2021-03-10 17:29:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:29:32,077 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:32,077 INFO L519 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] [2021-03-10 17:29:32,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:29:32,077 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:32,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:32,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1508487137, now seen corresponding path program 1 times [2021-03-10 17:29:32,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:32,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83456023] [2021-03-10 17:29:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:32,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83456023] [2021-03-10 17:29:32,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:32,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:32,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525295267] [2021-03-10 17:29:32,160 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:32,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:32,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:32,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:32,162 INFO L87 Difference]: Start difference. First operand 3741 states and 12342 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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) [2021-03-10 17:29:32,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:32,334 INFO L93 Difference]: Finished difference Result 4765 states and 15554 transitions. [2021-03-10 17:29:32,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:29:32,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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 [2021-03-10 17:29:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:32,348 INFO L225 Difference]: With dead ends: 4765 [2021-03-10 17:29:32,348 INFO L226 Difference]: Without dead ends: 4205 [2021-03-10 17:29:32,348 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 158.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:29:32,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4205 states. [2021-03-10 17:29:32,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4205 to 3501. [2021-03-10 17:29:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3500 states have (on average 3.282857142857143) internal successors, (11490), 3500 states have internal predecessors, (11490), 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) [2021-03-10 17:29:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 11490 transitions. [2021-03-10 17:29:32,437 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 11490 transitions. Word has length 43 [2021-03-10 17:29:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:32,437 INFO L480 AbstractCegarLoop]: Abstraction has 3501 states and 11490 transitions. [2021-03-10 17:29:32,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 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) [2021-03-10 17:29:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 11490 transitions. [2021-03-10 17:29:32,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:29:32,446 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:32,446 INFO L519 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] [2021-03-10 17:29:32,446 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:29:32,446 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:32,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:32,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1925749115, now seen corresponding path program 1 times [2021-03-10 17:29:32,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:32,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926363584] [2021-03-10 17:29:32,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:32,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:32,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926363584] [2021-03-10 17:29:32,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:32,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:32,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597096186] [2021-03-10 17:29:32,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:32,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:32,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:32,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:32,508 INFO L87 Difference]: Start difference. First operand 3501 states and 11490 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-03-10 17:29:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:32,608 INFO L93 Difference]: Finished difference Result 5325 states and 17262 transitions. [2021-03-10 17:29:32,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:29:32,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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 44 [2021-03-10 17:29:32,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:32,617 INFO L225 Difference]: With dead ends: 5325 [2021-03-10 17:29:32,617 INFO L226 Difference]: Without dead ends: 3741 [2021-03-10 17:29:32,617 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:29:32,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3741 states. [2021-03-10 17:29:32,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3741 to 2901. [2021-03-10 17:29:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2901 states, 2900 states have (on average 3.249655172413793) internal successors, (9424), 2900 states have internal predecessors, (9424), 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) [2021-03-10 17:29:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2901 states to 2901 states and 9424 transitions. [2021-03-10 17:29:32,713 INFO L78 Accepts]: Start accepts. Automaton has 2901 states and 9424 transitions. Word has length 44 [2021-03-10 17:29:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:32,714 INFO L480 AbstractCegarLoop]: Abstraction has 2901 states and 9424 transitions. [2021-03-10 17:29:32,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 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) [2021-03-10 17:29:32,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2901 states and 9424 transitions. [2021-03-10 17:29:32,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:29:32,719 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:32,719 INFO L519 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] [2021-03-10 17:29:32,719 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:29:32,720 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:32,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:32,720 INFO L82 PathProgramCache]: Analyzing trace with hash -914503748, now seen corresponding path program 1 times [2021-03-10 17:29:32,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:32,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636520307] [2021-03-10 17:29:32,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:32,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636520307] [2021-03-10 17:29:32,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:32,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:29:32,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521245661] [2021-03-10 17:29:32,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:29:32,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:32,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:29:32,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:29:32,818 INFO L87 Difference]: Start difference. First operand 2901 states and 9424 transitions. Second operand has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2021-03-10 17:29:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:32,906 INFO L93 Difference]: Finished difference Result 5121 states and 16485 transitions. [2021-03-10 17:29:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:29:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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 [2021-03-10 17:29:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:32,916 INFO L225 Difference]: With dead ends: 5121 [2021-03-10 17:29:32,916 INFO L226 Difference]: Without dead ends: 3091 [2021-03-10 17:29:32,916 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-03-10 17:29:32,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2021-03-10 17:29:32,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2611. [2021-03-10 17:29:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2610 states have (on average 3.2160919540229886) internal successors, (8394), 2610 states have internal predecessors, (8394), 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) [2021-03-10 17:29:32,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 8394 transitions. [2021-03-10 17:29:32,965 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 8394 transitions. Word has length 45 [2021-03-10 17:29:32,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:32,965 INFO L480 AbstractCegarLoop]: Abstraction has 2611 states and 8394 transitions. [2021-03-10 17:29:32,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 8 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) [2021-03-10 17:29:32,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 8394 transitions. [2021-03-10 17:29:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-03-10 17:29:32,970 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:32,970 INFO L519 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] [2021-03-10 17:29:32,971 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:29:32,971 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:32,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:32,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1480040420, now seen corresponding path program 2 times [2021-03-10 17:29:32,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:32,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958331084] [2021-03-10 17:29:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:33,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958331084] [2021-03-10 17:29:33,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:33,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:33,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713412640] [2021-03-10 17:29:33,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:33,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:33,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:33,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:33,058 INFO L87 Difference]: Start difference. First operand 2611 states and 8394 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) [2021-03-10 17:29:33,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:33,148 INFO L93 Difference]: Finished difference Result 3003 states and 9508 transitions. [2021-03-10 17:29:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:29:33,148 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 [2021-03-10 17:29:33,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:33,151 INFO L225 Difference]: With dead ends: 3003 [2021-03-10 17:29:33,152 INFO L226 Difference]: Without dead ends: 1083 [2021-03-10 17:29:33,152 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 83.4ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-03-10 17:29:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2021-03-10 17:29:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 1083. [2021-03-10 17:29:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 1082 states have (on average 3.032347504621072) internal successors, (3281), 1082 states have internal predecessors, (3281), 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) [2021-03-10 17:29:33,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 3281 transitions. [2021-03-10 17:29:33,170 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 3281 transitions. Word has length 45 [2021-03-10 17:29:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:33,170 INFO L480 AbstractCegarLoop]: Abstraction has 1083 states and 3281 transitions. [2021-03-10 17:29:33,171 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) [2021-03-10 17:29:33,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 3281 transitions. [2021-03-10 17:29:33,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:29:33,172 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:33,172 INFO L519 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] [2021-03-10 17:29:33,172 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:29:33,175 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:33,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:33,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1324106926, now seen corresponding path program 1 times [2021-03-10 17:29:33,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:33,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380516360] [2021-03-10 17:29:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:33,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380516360] [2021-03-10 17:29:33,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:33,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:29:33,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383858303] [2021-03-10 17:29:33,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:29:33,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:33,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:29:33,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:29:33,254 INFO L87 Difference]: Start difference. First operand 1083 states and 3281 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-03-10 17:29:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:33,321 INFO L93 Difference]: Finished difference Result 1288 states and 3844 transitions. [2021-03-10 17:29:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:29:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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 46 [2021-03-10 17:29:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:33,325 INFO L225 Difference]: With dead ends: 1288 [2021-03-10 17:29:33,326 INFO L226 Difference]: Without dead ends: 968 [2021-03-10 17:29:33,327 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:29:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2021-03-10 17:29:33,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 968. [2021-03-10 17:29:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 2.9896587383660806) internal successors, (2891), 967 states have internal predecessors, (2891), 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) [2021-03-10 17:29:33,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2891 transitions. [2021-03-10 17:29:33,341 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2891 transitions. Word has length 46 [2021-03-10 17:29:33,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:33,342 INFO L480 AbstractCegarLoop]: Abstraction has 968 states and 2891 transitions. [2021-03-10 17:29:33,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 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) [2021-03-10 17:29:33,342 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2891 transitions. [2021-03-10 17:29:33,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:29:33,344 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:33,344 INFO L519 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] [2021-03-10 17:29:33,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:29:33,344 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:33,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1708826962, now seen corresponding path program 1 times [2021-03-10 17:29:33,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:33,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129640109] [2021-03-10 17:29:33,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:33,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129640109] [2021-03-10 17:29:33,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:33,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:29:33,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396153820] [2021-03-10 17:29:33,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:29:33,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:29:33,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:29:33,428 INFO L87 Difference]: Start difference. First operand 968 states and 2891 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) [2021-03-10 17:29:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:33,508 INFO L93 Difference]: Finished difference Result 860 states and 2471 transitions. [2021-03-10 17:29:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:29:33,508 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 [2021-03-10 17:29:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:33,509 INFO L225 Difference]: With dead ends: 860 [2021-03-10 17:29:33,509 INFO L226 Difference]: Without dead ends: 608 [2021-03-10 17:29:33,509 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:29:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-03-10 17:29:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2021-03-10 17:29:33,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 2.8105436573311366) internal successors, (1706), 607 states have internal predecessors, (1706), 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) [2021-03-10 17:29:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1706 transitions. [2021-03-10 17:29:33,518 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1706 transitions. Word has length 47 [2021-03-10 17:29:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:33,518 INFO L480 AbstractCegarLoop]: Abstraction has 608 states and 1706 transitions. [2021-03-10 17:29:33,518 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) [2021-03-10 17:29:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1706 transitions. [2021-03-10 17:29:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:29:33,519 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:29:33,519 INFO L519 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] [2021-03-10 17:29:33,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:29:33,519 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:29:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:29:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1334106945, now seen corresponding path program 1 times [2021-03-10 17:29:33,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:29:33,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443166870] [2021-03-10 17:29:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:29:33,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:29:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:29:33,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443166870] [2021-03-10 17:29:33,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:29:33,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:29:33,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149576355] [2021-03-10 17:29:33,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:29:33,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:29:33,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:29:33,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:29:33,595 INFO L87 Difference]: Start difference. First operand 608 states and 1706 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2021-03-10 17:29:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:29:33,650 INFO L93 Difference]: Finished difference Result 311 states and 815 transitions. [2021-03-10 17:29:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:29:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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 [2021-03-10 17:29:33,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:29:33,650 INFO L225 Difference]: With dead ends: 311 [2021-03-10 17:29:33,650 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:29:33,652 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 67.3ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:29:33,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:29:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:29:33,652 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) [2021-03-10 17:29:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:29:33,653 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-03-10 17:29:33,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:29:33,653 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:29:33,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 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) [2021-03-10 17:29:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:29:33,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:29:33,653 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 17:29:33,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:29:33 BasicIcfg [2021-03-10 17:29:33,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:29:33,657 INFO L168 Benchmark]: Toolchain (without parser) took 4764.26 ms. Allocated memory was 373.3 MB in the beginning and 903.9 MB in the end (delta: 530.6 MB). Free memory was 336.5 MB in the beginning and 668.4 MB in the end (delta: -331.9 MB). Peak memory consumption was 201.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:33,659 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 373.3 MB. Free memory was 354.5 MB in the beginning and 354.5 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:29:33,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.01 ms. Allocated memory is still 373.3 MB. Free memory was 335.9 MB in the beginning and 336.2 MB in the end (delta: -324.4 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:33,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.59 ms. Allocated memory is still 373.3 MB. Free memory was 336.2 MB in the beginning and 334.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:33,659 INFO L168 Benchmark]: Boogie Preprocessor took 13.06 ms. Allocated memory is still 373.3 MB. Free memory was 334.1 MB in the beginning and 333.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:29:33,659 INFO L168 Benchmark]: RCFGBuilder took 310.97 ms. Allocated memory is still 373.3 MB. Free memory was 332.0 MB in the beginning and 307.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:33,661 INFO L168 Benchmark]: TraceAbstraction took 3989.47 ms. Allocated memory was 373.3 MB in the beginning and 903.9 MB in the end (delta: 530.6 MB). Free memory was 307.9 MB in the beginning and 668.4 MB in the end (delta: -360.6 MB). Peak memory consumption was 173.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:29:33,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 373.3 MB. Free memory was 354.5 MB in the beginning and 354.5 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 419.01 ms. Allocated memory is still 373.3 MB. Free memory was 335.9 MB in the beginning and 336.2 MB in the end (delta: -324.4 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.59 ms. Allocated memory is still 373.3 MB. Free memory was 336.2 MB in the beginning and 334.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 13.06 ms. Allocated memory is still 373.3 MB. Free memory was 334.1 MB in the beginning and 333.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 310.97 ms. Allocated memory is still 373.3 MB. Free memory was 332.0 MB in the beginning and 307.9 MB in the end (delta: 24.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3989.47 ms. Allocated memory was 373.3 MB in the beginning and 903.9 MB in the end (delta: 530.6 MB). Free memory was 307.9 MB in the beginning and 668.4 MB in the end (delta: -360.6 MB). Peak memory consumption was 173.2 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3892.8ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 96.3ms, AutomataDifference: 1517.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 350.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 940 SDtfs, 1364 SDslu, 3146 SDs, 0 SdLazy, 384 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 217.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1003.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=7593occurred in iteration=0, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 766.1ms AutomataMinimizationTime, 10 MinimizatonAttempts, 4312 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.5ms SsaConstructionTime, 162.7ms SatisfiabilityAnalysisTime, 812.8ms InterpolantComputationTime, 439 NumberOfCodeBlocks, 439 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 429 ConstructedInterpolants, 0 QuantifiedInterpolants, 1695 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...