/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:35:40,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:35:40,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:35:40,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:35:40,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:35:40,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:35:40,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:35:40,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:35:40,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:35:40,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:35:40,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:35:40,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:35:40,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:35:40,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:35:40,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:35:40,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:35:40,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 17:35:40,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:35:40,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:35:40,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:35:40,391 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 17:35:40,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:35:40,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:35:40,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:35:40,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:35:40,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:35:40,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:35:40,433 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:35:40,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:35:40,433 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:35:40,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:35:40,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:35:40,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:35:40,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:35:40,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:35:40,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:35:40,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:35:40,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:35:40,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:35:40,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:35:40,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:35:40,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:35:40,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:35:40,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:35:40,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:35:40,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:35:40,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:35:40,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:35:40,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:35:40,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:35:40,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:35:40,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:35:40,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:35:40,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:35:40,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:35:40,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:35:40,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:35:40,758 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:35:40,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-03-10 17:35:40,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d574057d/8020464364284189ad0a32af6da40ce7/FLAGf2895579a [2021-03-10 17:35:41,372 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:35:41,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2021-03-10 17:35:41,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d574057d/8020464364284189ad0a32af6da40ce7/FLAGf2895579a [2021-03-10 17:35:41,790 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d574057d/8020464364284189ad0a32af6da40ce7 [2021-03-10 17:35:41,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:35:41,798 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:35:41,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:35:41,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:35:41,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:35:41,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:35:41" (1/1) ... [2021-03-10 17:35:41,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b6441c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:41, skipping insertion in model container [2021-03-10 17:35:41,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:35:41" (1/1) ... [2021-03-10 17:35:41,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:35:41,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:35:42,034 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/safe032_tso.oepc.i[950,963] [2021-03-10 17:35:42,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:35:42,263 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:35:42,275 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/safe032_tso.oepc.i[950,963] [2021-03-10 17:35:42,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:35:42,388 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:35:42,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42 WrapperNode [2021-03-10 17:35:42,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:35:42,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:35:42,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:35:42,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:35:42,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:35:42,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:35:42,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:35:42,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:35:42,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (1/1) ... [2021-03-10 17:35:42,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:35:42,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:35:42,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:35:42,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:35:42,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (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 17:35:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:35:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:35:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:35:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:35:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:35:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:35:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:35:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:35:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:35:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:35:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:35:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:35:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:35:42,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:35:42,577 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 17:35:42,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:35:42,919 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:35:42,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:35:42 BoogieIcfgContainer [2021-03-10 17:35:42,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:35:42,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:35:42,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:35:42,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:35:42,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:35:41" (1/3) ... [2021-03-10 17:35:42,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e161dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:35:42, skipping insertion in model container [2021-03-10 17:35:42,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:42" (2/3) ... [2021-03-10 17:35:42,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e161dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:35:42, skipping insertion in model container [2021-03-10 17:35:42,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:35:42" (3/3) ... [2021-03-10 17:35:42,927 INFO L111 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2021-03-10 17:35:42,932 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:35:42,932 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:35:42,936 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:35:42,936 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:35:42,964 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,965 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,965 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,966 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,967 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,967 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,968 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,968 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,969 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,970 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,970 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,971 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,971 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,972 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,974 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,975 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,975 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,981 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,982 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,982 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,982 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,988 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,988 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,988 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:42,991 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:35:43,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:35:43,032 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:35:43,032 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:35:43,032 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:35:43,032 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:35:43,032 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:35:43,032 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:35:43,032 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:35:43,032 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:35:43,042 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 82 places, 74 transitions, 163 flow [2021-03-10 17:35:43,706 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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 17:35:43,736 INFO L276 IsEmpty]: Start isEmpty. Operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 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 17:35:43,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-03-10 17:35:43,793 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:43,794 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 17:35:43,794 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:43,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1627307057, now seen corresponding path program 1 times [2021-03-10 17:35:43,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:43,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758012447] [2021-03-10 17:35:43,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:44,165 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 17:35:44,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758012447] [2021-03-10 17:35:44,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:44,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:44,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356254908] [2021-03-10 17:35:44,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:44,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:44,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:44,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:44,231 INFO L87 Difference]: Start difference. First operand has 8818 states, 8816 states have (on average 3.581102540834846) internal successors, (31571), 8817 states have internal predecessors, (31571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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 17:35:44,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:44,697 INFO L93 Difference]: Finished difference Result 15575 states and 54625 transitions. [2021-03-10 17:35:44,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:44,700 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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 17:35:44,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:44,742 INFO L225 Difference]: With dead ends: 15575 [2021-03-10 17:35:44,742 INFO L226 Difference]: Without dead ends: 4264 [2021-03-10 17:35:44,743 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 241.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:44,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-03-10 17:35:44,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 3790. [2021-03-10 17:35:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3790 states, 3789 states have (on average 3.247558722618105) internal successors, (12305), 3789 states have internal predecessors, (12305), 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 17:35:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3790 states to 3790 states and 12305 transitions. [2021-03-10 17:35:44,998 INFO L78 Accepts]: Start accepts. Automaton has 3790 states and 12305 transitions. Word has length 39 [2021-03-10 17:35:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:44,998 INFO L480 AbstractCegarLoop]: Abstraction has 3790 states and 12305 transitions. [2021-03-10 17:35:44,999 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 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 17:35:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3790 states and 12305 transitions. [2021-03-10 17:35:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-03-10 17:35:45,005 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:45,005 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 17:35:45,006 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:35:45,006 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:45,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:45,007 INFO L82 PathProgramCache]: Analyzing trace with hash -30968880, now seen corresponding path program 1 times [2021-03-10 17:35:45,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:45,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023896907] [2021-03-10 17:35:45,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:45,209 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 17:35:45,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023896907] [2021-03-10 17:35:45,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:45,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:45,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895815616] [2021-03-10 17:35:45,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:45,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:45,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:45,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:45,211 INFO L87 Difference]: Start difference. First operand 3790 states and 12305 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 17:35:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:45,530 INFO L93 Difference]: Finished difference Result 4616 states and 14869 transitions. [2021-03-10 17:35:45,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:45,531 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 17:35:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:45,548 INFO L225 Difference]: With dead ends: 4616 [2021-03-10 17:35:45,548 INFO L226 Difference]: Without dead ends: 3103 [2021-03-10 17:35:45,549 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 229.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2021-03-10 17:35:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 2879. [2021-03-10 17:35:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2878 states have (on average 3.1869353717859625) internal successors, (9172), 2878 states have internal predecessors, (9172), 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 17:35:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 9172 transitions. [2021-03-10 17:35:45,660 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 9172 transitions. Word has length 41 [2021-03-10 17:35:45,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:45,660 INFO L480 AbstractCegarLoop]: Abstraction has 2879 states and 9172 transitions. [2021-03-10 17:35:45,661 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 17:35:45,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 9172 transitions. [2021-03-10 17:35:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:35:45,669 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:45,669 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 17:35:45,669 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:35:45,669 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:45,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:45,677 INFO L82 PathProgramCache]: Analyzing trace with hash -969881359, now seen corresponding path program 1 times [2021-03-10 17:35:45,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:45,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026398321] [2021-03-10 17:35:45,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:45,840 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 17:35:45,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026398321] [2021-03-10 17:35:45,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:45,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:35:45,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591530183] [2021-03-10 17:35:45,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:35:45,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:45,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:35:45,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:35:45,843 INFO L87 Difference]: Start difference. First operand 2879 states and 9172 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 17:35:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:45,973 INFO L93 Difference]: Finished difference Result 4089 states and 12872 transitions. [2021-03-10 17:35:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:35:45,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 17:35:45,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:45,986 INFO L225 Difference]: With dead ends: 4089 [2021-03-10 17:35:45,986 INFO L226 Difference]: Without dead ends: 2499 [2021-03-10 17:35:45,986 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:35:45,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2499 states. [2021-03-10 17:35:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2499 to 2427. [2021-03-10 17:35:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 2426 states have (on average 3.147568013190437) internal successors, (7636), 2426 states have internal predecessors, (7636), 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 17:35:46,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 7636 transitions. [2021-03-10 17:35:46,053 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 7636 transitions. Word has length 44 [2021-03-10 17:35:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:46,053 INFO L480 AbstractCegarLoop]: Abstraction has 2427 states and 7636 transitions. [2021-03-10 17:35:46,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 17:35:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 7636 transitions. [2021-03-10 17:35:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:35:46,059 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:46,059 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 17:35:46,059 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:35:46,059 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:46,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:46,060 INFO L82 PathProgramCache]: Analyzing trace with hash 681148665, now seen corresponding path program 1 times [2021-03-10 17:35:46,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:46,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016003509] [2021-03-10 17:35:46,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:46,212 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 17:35:46,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016003509] [2021-03-10 17:35:46,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:46,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:46,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198046732] [2021-03-10 17:35:46,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:46,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:46,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:46,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:46,215 INFO L87 Difference]: Start difference. First operand 2427 states and 7636 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 17:35:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:46,440 INFO L93 Difference]: Finished difference Result 3093 states and 9745 transitions. [2021-03-10 17:35:46,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:46,440 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 17:35:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:46,454 INFO L225 Difference]: With dead ends: 3093 [2021-03-10 17:35:46,454 INFO L226 Difference]: Without dead ends: 2469 [2021-03-10 17:35:46,455 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 182.6ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:46,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2021-03-10 17:35:46,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2131. [2021-03-10 17:35:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 2130 states have (on average 3.1051643192488263) internal successors, (6614), 2130 states have internal predecessors, (6614), 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 17:35:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 6614 transitions. [2021-03-10 17:35:46,511 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 6614 transitions. Word has length 44 [2021-03-10 17:35:46,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:46,512 INFO L480 AbstractCegarLoop]: Abstraction has 2131 states and 6614 transitions. [2021-03-10 17:35:46,512 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 17:35:46,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 6614 transitions. [2021-03-10 17:35:46,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:35:46,516 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:46,516 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 17:35:46,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:35:46,517 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:46,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:46,517 INFO L82 PathProgramCache]: Analyzing trace with hash 318935226, now seen corresponding path program 1 times [2021-03-10 17:35:46,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:46,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759641831] [2021-03-10 17:35:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:46,635 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 17:35:46,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759641831] [2021-03-10 17:35:46,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:46,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:35:46,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808503512] [2021-03-10 17:35:46,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:35:46,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:46,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:35:46,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:35:46,644 INFO L87 Difference]: Start difference. First operand 2131 states and 6614 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 17:35:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:46,765 INFO L93 Difference]: Finished difference Result 2628 states and 8026 transitions. [2021-03-10 17:35:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:35:46,766 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 17:35:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:46,783 INFO L225 Difference]: With dead ends: 2628 [2021-03-10 17:35:46,783 INFO L226 Difference]: Without dead ends: 1892 [2021-03-10 17:35:46,783 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 92.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:35:46,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2021-03-10 17:35:46,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2021-03-10 17:35:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1892 states, 1891 states have (on average 3.034902168164992) internal successors, (5739), 1891 states have internal predecessors, (5739), 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 17:35:46,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 5739 transitions. [2021-03-10 17:35:46,829 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 5739 transitions. Word has length 46 [2021-03-10 17:35:46,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:46,830 INFO L480 AbstractCegarLoop]: Abstraction has 1892 states and 5739 transitions. [2021-03-10 17:35:46,830 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 17:35:46,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 5739 transitions. [2021-03-10 17:35:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-03-10 17:35:46,834 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:46,834 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 17:35:46,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:35:46,835 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:46,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1770719823, now seen corresponding path program 1 times [2021-03-10 17:35:46,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:46,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251085803] [2021-03-10 17:35:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:46,964 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 17:35:46,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251085803] [2021-03-10 17:35:46,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:46,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:46,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849592061] [2021-03-10 17:35:46,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:46,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:46,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:46,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:46,965 INFO L87 Difference]: Start difference. First operand 1892 states and 5739 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 17:35:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:47,081 INFO L93 Difference]: Finished difference Result 1823 states and 5354 transitions. [2021-03-10 17:35:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:35:47,082 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 17:35:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:47,088 INFO L225 Difference]: With dead ends: 1823 [2021-03-10 17:35:47,088 INFO L226 Difference]: Without dead ends: 1251 [2021-03-10 17:35:47,089 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 103.4ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:35:47,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2021-03-10 17:35:47,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1251. [2021-03-10 17:35:47,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1251 states, 1250 states have (on average 2.8624) internal successors, (3578), 1250 states have internal predecessors, (3578), 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 17:35:47,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1251 states to 1251 states and 3578 transitions. [2021-03-10 17:35:47,119 INFO L78 Accepts]: Start accepts. Automaton has 1251 states and 3578 transitions. Word has length 47 [2021-03-10 17:35:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:47,119 INFO L480 AbstractCegarLoop]: Abstraction has 1251 states and 3578 transitions. [2021-03-10 17:35:47,119 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 17:35:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1251 states and 3578 transitions. [2021-03-10 17:35:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-03-10 17:35:47,122 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:47,122 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, 1] [2021-03-10 17:35:47,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:35:47,122 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash 788068880, now seen corresponding path program 1 times [2021-03-10 17:35:47,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:47,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772772586] [2021-03-10 17:35:47,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:47,253 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 17:35:47,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772772586] [2021-03-10 17:35:47,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:47,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:35:47,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525914866] [2021-03-10 17:35:47,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:35:47,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:47,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:35:47,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:35:47,255 INFO L87 Difference]: Start difference. First operand 1251 states and 3578 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:35:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:47,343 INFO L93 Difference]: Finished difference Result 819 states and 2255 transitions. [2021-03-10 17:35:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:35:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-03-10 17:35:47,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:47,344 INFO L225 Difference]: With dead ends: 819 [2021-03-10 17:35:47,344 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:35:47,345 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 93.5ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:35:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:35:47,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:35:47,346 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 17:35:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:35:47,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2021-03-10 17:35:47,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:47,346 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:35:47,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-10 17:35:47,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:35:47,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:35:47,347 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:35:47,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:35:47 BasicIcfg [2021-03-10 17:35:47,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:35:47,352 INFO L168 Benchmark]: Toolchain (without parser) took 5557.94 ms. Allocated memory was 255.9 MB in the beginning and 841.0 MB in the end (delta: 585.1 MB). Free memory was 237.2 MB in the beginning and 562.4 MB in the end (delta: -325.1 MB). Peak memory consumption was 259.7 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:47,357 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:35:47,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.01 ms. Allocated memory was 255.9 MB in the beginning and 432.0 MB in the end (delta: 176.2 MB). Free memory was 236.6 MB in the beginning and 395.3 MB in the end (delta: -158.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:47,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 432.0 MB. Free memory was 395.3 MB in the beginning and 393.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:47,361 INFO L168 Benchmark]: Boogie Preprocessor took 32.56 ms. Allocated memory is still 432.0 MB. Free memory was 393.6 MB in the beginning and 391.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:35:47,362 INFO L168 Benchmark]: RCFGBuilder took 439.52 ms. Allocated memory is still 432.0 MB. Free memory was 391.9 MB in the beginning and 406.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:47,366 INFO L168 Benchmark]: TraceAbstraction took 4429.15 ms. Allocated memory was 432.0 MB in the beginning and 841.0 MB in the end (delta: 408.9 MB). Free memory was 406.1 MB in the beginning and 562.4 MB in the end (delta: -156.2 MB). Peak memory consumption was 252.6 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:47,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 238.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 591.01 ms. Allocated memory was 255.9 MB in the beginning and 432.0 MB in the end (delta: 176.2 MB). Free memory was 236.6 MB in the beginning and 395.3 MB in the end (delta: -158.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.01 ms. Allocated memory is still 432.0 MB. Free memory was 395.3 MB in the beginning and 393.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 32.56 ms. Allocated memory is still 432.0 MB. Free memory was 393.6 MB in the beginning and 391.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 439.52 ms. Allocated memory is still 432.0 MB. Free memory was 391.9 MB in the beginning and 406.1 MB in the end (delta: -14.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4429.15 ms. Allocated memory was 432.0 MB in the beginning and 841.0 MB in the end (delta: 408.9 MB). Free memory was 406.1 MB in the beginning and 562.4 MB in the end (delta: -156.2 MB). Peak memory consumption was 252.6 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, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4317.5ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 116.3ms, AutomataDifference: 1650.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 674.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 669 SDtfs, 1193 SDslu, 2211 SDs, 0 SdLazy, 330 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 282.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1077.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8818occurred in iteration=0, InterpolantAutomatonStates: 75, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 552.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 1108 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.9ms SsaConstructionTime, 162.9ms SatisfiabilityAnalysisTime, 964.2ms InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 303 ConstructedInterpolants, 0 QuantifiedInterpolants, 1335 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...