/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-New_States.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-60729f1 [2020-11-12 12:19:18,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-12 12:19:18,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-12 12:19:18,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-12 12:19:18,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-12 12:19:18,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-12 12:19:18,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-12 12:19:18,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-12 12:19:18,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-12 12:19:18,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-12 12:19:18,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-12 12:19:18,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-12 12:19:18,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-12 12:19:18,763 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-12 12:19:18,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-12 12:19:18,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-12 12:19:18,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-12 12:19:18,772 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-12 12:19:18,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-12 12:19:18,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-12 12:19:18,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-12 12:19:18,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-12 12:19:18,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-12 12:19:18,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-12 12:19:18,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-12 12:19:18,798 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-12 12:19:18,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-12 12:19:18,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-12 12:19:18,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-12 12:19:18,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-12 12:19:18,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-12 12:19:18,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-12 12:19:18,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-12 12:19:18,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-12 12:19:18,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-12 12:19:18,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-12 12:19:18,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-12 12:19:18,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-12 12:19:18,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-12 12:19:18,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-12 12:19:18,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-12 12:19:18,812 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-New_States.epf [2020-11-12 12:19:18,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-12 12:19:18,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-12 12:19:18,865 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-12 12:19:18,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-12 12:19:18,866 INFO L138 SettingsManager]: * Use SBE=true [2020-11-12 12:19:18,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-12 12:19:18,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-12 12:19:18,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-12 12:19:18,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-12 12:19:18,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-12 12:19:18,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-12 12:19:18,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-12 12:19:18,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-12 12:19:18,869 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-12 12:19:18,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-12 12:19:18,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-12 12:19:18,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-12 12:19:18,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-12 12:19:18,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-12 12:19:18,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-12 12:19:18,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-12 12:19:18,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-12 12:19:18,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-12 12:19:18,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-12 12:19:18,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-12 12:19:18,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-12 12:19:18,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-12 12:19:18,872 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-11-12 12:19:18,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-12 12:19:18,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-12 12:19:18,872 INFO L138 SettingsManager]: * Sleep set reduction in concurrent analysis=NEW_STATES 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-12 12:19:19,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-12 12:19:19,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-12 12:19:19,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-12 12:19:19,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-12 12:19:19,323 INFO L275 PluginConnector]: CDTParser initialized [2020-11-12 12:19:19,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-11-12 12:19:19,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2fb4ff0/e2f7e0e674ca4b42b93970d695286a32/FLAG9721dfb04 [2020-11-12 12:19:20,127 INFO L306 CDTParser]: Found 1 translation units. [2020-11-12 12:19:20,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.opt.i [2020-11-12 12:19:20,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2fb4ff0/e2f7e0e674ca4b42b93970d695286a32/FLAG9721dfb04 [2020-11-12 12:19:20,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d2fb4ff0/e2f7e0e674ca4b42b93970d695286a32 [2020-11-12 12:19:20,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-12 12:19:20,442 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-12 12:19:20,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-12 12:19:20,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-12 12:19:20,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-12 12:19:20,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:19:20" (1/1) ... [2020-11-12 12:19:20,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da5a5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:20, skipping insertion in model container [2020-11-12 12:19:20,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:19:20" (1/1) ... [2020-11-12 12:19:20,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-12 12:19:20,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-12 12:19:20,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:19:20,970 INFO L203 MainTranslator]: Completed pre-run [2020-11-12 12:19:21,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-12 12:19:21,154 INFO L208 MainTranslator]: Completed translation [2020-11-12 12:19:21,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21 WrapperNode [2020-11-12 12:19:21,155 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-12 12:19:21,156 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-12 12:19:21,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-12 12:19:21,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-12 12:19:21,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-12 12:19:21,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-12 12:19:21,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-12 12:19:21,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-12 12:19:21,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (1/1) ... [2020-11-12 12:19:21,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-12 12:19:21,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-12 12:19:21,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-12 12:19:21,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-12 12:19:21,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (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 [2020-11-12 12:19:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-12 12:19:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-12 12:19:21,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-12 12:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-12 12:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-12 12:19:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-12 12:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-12 12:19:21,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-12 12:19:21,329 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-12 12:19:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-12 12:19:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-12 12:19:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-12 12:19:21,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-12 12:19:21,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-12 12:19:21,332 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-12 12:19:21,850 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-12 12:19:21,850 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-12 12:19:21,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:19:21 BoogieIcfgContainer [2020-11-12 12:19:21,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-12 12:19:21,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-12 12:19:21,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-12 12:19:21,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-12 12:19:21,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:19:20" (1/3) ... [2020-11-12 12:19:21,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f868daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:19:21, skipping insertion in model container [2020-11-12 12:19:21,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:19:21" (2/3) ... [2020-11-12 12:19:21,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f868daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:19:21, skipping insertion in model container [2020-11-12 12:19:21,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:19:21" (3/3) ... [2020-11-12 12:19:21,861 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.opt.i [2020-11-12 12:19:21,876 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-12 12:19:21,876 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-12 12:19:21,880 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-12 12:19:21,881 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-12 12:19:21,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,914 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,914 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,914 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,915 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,915 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,916 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,917 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,917 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,917 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,918 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,918 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,918 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,919 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,919 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,920 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,920 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,921 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,921 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,922 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,922 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,925 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,926 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,926 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,926 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,931 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,932 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,932 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,932 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,935 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,935 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,935 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-12 12:19:21,938 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-12 12:19:21,950 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-12 12:19:21,973 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-12 12:19:21,973 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-12 12:19:21,973 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-12 12:19:21,973 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-12 12:19:21,973 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-12 12:19:21,973 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-12 12:19:21,974 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-12 12:19:21,974 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-12 12:19:21,985 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 78 transitions, 171 flow [2020-11-12 12:19:22,718 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-11-12 12:19:23,782 WARN L455 BasicCegarLoop]: Sleep Set Reduction Time: 1059ms [2020-11-12 12:19:23,814 WARN L456 BasicCegarLoop]: Sleep set: input automaton has 9847 states, 9845 states have (on average 3.614931437277806) internal successors, (35589), 9846 states have internal predecessors, (35589), 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) [2020-11-12 12:19:23,899 WARN L457 BasicCegarLoop]: Sleep set: output automaton has 34478 states, 31541 states have (on average 1.210868393519546) internal successors, (38192), 34477 states have internal predecessors, (38192), 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) [2020-11-12 12:19:23,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 34478 states, 31541 states have (on average 1.210868393519546) internal successors, (38192), 34477 states have internal predecessors, (38192), 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) [2020-11-12 12:19:24,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-12 12:19:24,061 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:24,062 INFO L494 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] [2020-11-12 12:19:24,062 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:24,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:24,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1728151724, now seen corresponding path program 1 times [2020-11-12 12:19:24,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:24,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348637400] [2020-11-12 12:19:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:24,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:24,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348637400] [2020-11-12 12:19:24,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:24,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:24,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312975914] [2020-11-12 12:19:24,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:24,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:24,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:24,581 INFO L87 Difference]: Start difference. First operand has 34478 states, 31541 states have (on average 1.210868393519546) internal successors, (38192), 34477 states have internal predecessors, (38192), 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 6.833333333333333) internal successors, (41), 6 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) [2020-11-12 12:19:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:24,993 INFO L93 Difference]: Finished difference Result 14013 states and 16383 transitions. [2020-11-12 12:19:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:19:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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 [2020-11-12 12:19:24,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:25,037 INFO L225 Difference]: With dead ends: 14013 [2020-11-12 12:19:25,037 INFO L226 Difference]: Without dead ends: 4762 [2020-11-12 12:19:25,039 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:25,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2020-11-12 12:19:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 4762. [2020-11-12 12:19:25,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4762 states, 4517 states have (on average 1.354660172680983) internal successors, (6119), 4761 states have internal predecessors, (6119), 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) [2020-11-12 12:19:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4762 states to 4762 states and 6119 transitions. [2020-11-12 12:19:25,305 INFO L78 Accepts]: Start accepts. Automaton has 4762 states and 6119 transitions. Word has length 41 [2020-11-12 12:19:25,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:25,305 INFO L481 AbstractCegarLoop]: Abstraction has 4762 states and 6119 transitions. [2020-11-12 12:19:25,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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) [2020-11-12 12:19:25,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4762 states and 6119 transitions. [2020-11-12 12:19:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-12 12:19:25,312 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:25,313 INFO L494 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] [2020-11-12 12:19:25,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-12 12:19:25,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:25,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:25,314 INFO L82 PathProgramCache]: Analyzing trace with hash 433003477, now seen corresponding path program 1 times [2020-11-12 12:19:25,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:25,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539830219] [2020-11-12 12:19:25,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:25,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:25,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539830219] [2020-11-12 12:19:25,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:25,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:25,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086598047] [2020-11-12 12:19:25,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:25,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:25,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:25,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:25,499 INFO L87 Difference]: Start difference. First operand 4762 states and 6119 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:25,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:25,786 INFO L93 Difference]: Finished difference Result 5198 states and 6804 transitions. [2020-11-12 12:19:25,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:25,787 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-11-12 12:19:25,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:25,805 INFO L225 Difference]: With dead ends: 5198 [2020-11-12 12:19:25,805 INFO L226 Difference]: Without dead ends: 3540 [2020-11-12 12:19:25,806 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:25,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3540 states. [2020-11-12 12:19:25,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3540 to 3540. [2020-11-12 12:19:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3540 states, 3365 states have (on average 1.3684992570579495) internal successors, (4605), 3539 states have internal predecessors, (4605), 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) [2020-11-12 12:19:25,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 4605 transitions. [2020-11-12 12:19:25,898 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 4605 transitions. Word has length 43 [2020-11-12 12:19:25,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:25,899 INFO L481 AbstractCegarLoop]: Abstraction has 3540 states and 4605 transitions. [2020-11-12 12:19:25,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:25,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 4605 transitions. [2020-11-12 12:19:25,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-12 12:19:25,906 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:25,906 INFO L494 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] [2020-11-12 12:19:25,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-12 12:19:25,907 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:25,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:25,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1598134966, now seen corresponding path program 1 times [2020-11-12 12:19:25,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:25,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197974122] [2020-11-12 12:19:25,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:25,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:26,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197974122] [2020-11-12 12:19:26,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:26,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:26,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98449785] [2020-11-12 12:19:26,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:26,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:26,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:26,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:26,087 INFO L87 Difference]: Start difference. First operand 3540 states and 4605 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2020-11-12 12:19:26,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:26,305 INFO L93 Difference]: Finished difference Result 3828 states and 4878 transitions. [2020-11-12 12:19:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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 [2020-11-12 12:19:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:26,319 INFO L225 Difference]: With dead ends: 3828 [2020-11-12 12:19:26,319 INFO L226 Difference]: Without dead ends: 2810 [2020-11-12 12:19:26,319 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:26,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2020-11-12 12:19:26,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 2810. [2020-11-12 12:19:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 2670 states have (on average 1.3119850187265918) internal successors, (3503), 2809 states have internal predecessors, (3503), 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) [2020-11-12 12:19:26,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 3503 transitions. [2020-11-12 12:19:26,383 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 3503 transitions. Word has length 45 [2020-11-12 12:19:26,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:26,383 INFO L481 AbstractCegarLoop]: Abstraction has 2810 states and 3503 transitions. [2020-11-12 12:19:26,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 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) [2020-11-12 12:19:26,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 3503 transitions. [2020-11-12 12:19:26,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:19:26,389 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:26,389 INFO L494 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] [2020-11-12 12:19:26,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-12 12:19:26,390 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:26,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:26,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1125592896, now seen corresponding path program 1 times [2020-11-12 12:19:26,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:26,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078353549] [2020-11-12 12:19:26,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:26,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:26,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078353549] [2020-11-12 12:19:26,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:26,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:26,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590872866] [2020-11-12 12:19:26,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:26,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:26,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:26,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:26,539 INFO L87 Difference]: Start difference. First operand 2810 states and 3503 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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) [2020-11-12 12:19:26,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:26,706 INFO L93 Difference]: Finished difference Result 4741 states and 6043 transitions. [2020-11-12 12:19:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:19:26,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 [2020-11-12 12:19:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:26,720 INFO L225 Difference]: With dead ends: 4741 [2020-11-12 12:19:26,721 INFO L226 Difference]: Without dead ends: 2762 [2020-11-12 12:19:26,721 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2020-11-12 12:19:26,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2762. [2020-11-12 12:19:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2762 states, 2622 states have (on average 1.3119755911517925) internal successors, (3440), 2761 states have internal predecessors, (3440), 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) [2020-11-12 12:19:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 3440 transitions. [2020-11-12 12:19:26,808 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 3440 transitions. Word has length 46 [2020-11-12 12:19:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:26,809 INFO L481 AbstractCegarLoop]: Abstraction has 2762 states and 3440 transitions. [2020-11-12 12:19:26,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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) [2020-11-12 12:19:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 3440 transitions. [2020-11-12 12:19:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:19:26,814 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:26,814 INFO L494 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] [2020-11-12 12:19:26,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-12 12:19:26,814 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:26,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:26,815 INFO L82 PathProgramCache]: Analyzing trace with hash 47617986, now seen corresponding path program 2 times [2020-11-12 12:19:26,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:26,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555540514] [2020-11-12 12:19:26,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:26,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555540514] [2020-11-12 12:19:26,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:26,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:26,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422639900] [2020-11-12 12:19:26,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:26,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:26,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:26,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:26,950 INFO L87 Difference]: Start difference. First operand 2762 states and 3440 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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) [2020-11-12 12:19:27,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:27,114 INFO L93 Difference]: Finished difference Result 4645 states and 5852 transitions. [2020-11-12 12:19:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:27,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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 [2020-11-12 12:19:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:27,127 INFO L225 Difference]: With dead ends: 4645 [2020-11-12 12:19:27,127 INFO L226 Difference]: Without dead ends: 2685 [2020-11-12 12:19:27,127 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2020-11-12 12:19:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 2685. [2020-11-12 12:19:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2545 states have (on average 1.2860510805500982) internal successors, (3273), 2684 states have internal predecessors, (3273), 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) [2020-11-12 12:19:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 3273 transitions. [2020-11-12 12:19:27,185 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 3273 transitions. Word has length 46 [2020-11-12 12:19:27,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:27,185 INFO L481 AbstractCegarLoop]: Abstraction has 2685 states and 3273 transitions. [2020-11-12 12:19:27,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 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) [2020-11-12 12:19:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 3273 transitions. [2020-11-12 12:19:27,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-12 12:19:27,190 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:27,190 INFO L494 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] [2020-11-12 12:19:27,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-12 12:19:27,191 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:27,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:27,191 INFO L82 PathProgramCache]: Analyzing trace with hash -29797218, now seen corresponding path program 3 times [2020-11-12 12:19:27,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:27,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223078275] [2020-11-12 12:19:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:27,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223078275] [2020-11-12 12:19:27,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:27,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:27,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016421152] [2020-11-12 12:19:27,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:27,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:27,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:27,365 INFO L87 Difference]: Start difference. First operand 2685 states and 3273 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) [2020-11-12 12:19:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:27,561 INFO L93 Difference]: Finished difference Result 3021 states and 3573 transitions. [2020-11-12 12:19:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:27,562 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 [2020-11-12 12:19:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:27,574 INFO L225 Difference]: With dead ends: 3021 [2020-11-12 12:19:27,575 INFO L226 Difference]: Without dead ends: 2525 [2020-11-12 12:19:27,575 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:27,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2020-11-12 12:19:27,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2525. [2020-11-12 12:19:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2393 states have (on average 1.2682824905975763) internal successors, (3035), 2524 states have internal predecessors, (3035), 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) [2020-11-12 12:19:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3035 transitions. [2020-11-12 12:19:27,642 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3035 transitions. Word has length 46 [2020-11-12 12:19:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:27,643 INFO L481 AbstractCegarLoop]: Abstraction has 2525 states and 3035 transitions. [2020-11-12 12:19:27,643 INFO L482 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) [2020-11-12 12:19:27,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3035 transitions. [2020-11-12 12:19:27,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-12 12:19:27,647 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:27,648 INFO L494 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] [2020-11-12 12:19:27,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-12 12:19:27,648 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:27,649 INFO L82 PathProgramCache]: Analyzing trace with hash 403493214, now seen corresponding path program 1 times [2020-11-12 12:19:27,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:27,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151448478] [2020-11-12 12:19:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:27,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151448478] [2020-11-12 12:19:27,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:27,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:27,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925514096] [2020-11-12 12:19:27,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:27,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:27,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:27,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:27,824 INFO L87 Difference]: Start difference. First operand 2525 states and 3035 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2020-11-12 12:19:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:28,018 INFO L93 Difference]: Finished difference Result 4168 states and 4805 transitions. [2020-11-12 12:19:28,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-12 12:19:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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 [2020-11-12 12:19:28,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:28,032 INFO L225 Difference]: With dead ends: 4168 [2020-11-12 12:19:28,032 INFO L226 Difference]: Without dead ends: 2464 [2020-11-12 12:19:28,032 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2020-11-12 12:19:28,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 1968. [2020-11-12 12:19:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1868 states have (on average 1.2708779443254818) internal successors, (2374), 1967 states have internal predecessors, (2374), 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) [2020-11-12 12:19:28,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2374 transitions. [2020-11-12 12:19:28,090 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2374 transitions. Word has length 47 [2020-11-12 12:19:28,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:28,090 INFO L481 AbstractCegarLoop]: Abstraction has 1968 states and 2374 transitions. [2020-11-12 12:19:28,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 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) [2020-11-12 12:19:28,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2374 transitions. [2020-11-12 12:19:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-12 12:19:28,096 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:28,096 INFO L494 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] [2020-11-12 12:19:28,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-12 12:19:28,097 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:28,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:28,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1337066365, now seen corresponding path program 1 times [2020-11-12 12:19:28,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:28,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190951896] [2020-11-12 12:19:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:28,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190951896] [2020-11-12 12:19:28,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:28,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-12 12:19:28,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267639444] [2020-11-12 12:19:28,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-12 12:19:28,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:28,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-12 12:19:28,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-12 12:19:28,295 INFO L87 Difference]: Start difference. First operand 1968 states and 2374 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2020-11-12 12:19:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:28,488 INFO L93 Difference]: Finished difference Result 2283 states and 2635 transitions. [2020-11-12 12:19:28,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-12 12:19:28,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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 [2020-11-12 12:19:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:28,499 INFO L225 Difference]: With dead ends: 2283 [2020-11-12 12:19:28,499 INFO L226 Difference]: Without dead ends: 1869 [2020-11-12 12:19:28,500 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2020-11-12 12:19:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1869. [2020-11-12 12:19:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1773 states have (on average 1.252115059221658) internal successors, (2220), 1868 states have internal predecessors, (2220), 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) [2020-11-12 12:19:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2220 transitions. [2020-11-12 12:19:28,556 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2220 transitions. Word has length 48 [2020-11-12 12:19:28,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:28,557 INFO L481 AbstractCegarLoop]: Abstraction has 1869 states and 2220 transitions. [2020-11-12 12:19:28,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 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) [2020-11-12 12:19:28,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2220 transitions. [2020-11-12 12:19:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-12 12:19:28,562 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:28,562 INFO L494 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] [2020-11-12 12:19:28,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-12 12:19:28,562 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1115024364, now seen corresponding path program 1 times [2020-11-12 12:19:28,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:28,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513775959] [2020-11-12 12:19:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:28,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513775959] [2020-11-12 12:19:28,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:28,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:28,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43329226] [2020-11-12 12:19:28,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:28,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:28,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:28,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:28,756 INFO L87 Difference]: Start difference. First operand 1869 states and 2220 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2020-11-12 12:19:28,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:28,999 INFO L93 Difference]: Finished difference Result 1881 states and 2123 transitions. [2020-11-12 12:19:29,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-12 12:19:29,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 [2020-11-12 12:19:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:29,007 INFO L225 Difference]: With dead ends: 1881 [2020-11-12 12:19:29,007 INFO L226 Difference]: Without dead ends: 1343 [2020-11-12 12:19:29,008 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-11-12 12:19:29,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2020-11-12 12:19:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1343. [2020-11-12 12:19:29,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1271 states have (on average 1.1809598741148701) internal successors, (1501), 1342 states have internal predecessors, (1501), 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) [2020-11-12 12:19:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1501 transitions. [2020-11-12 12:19:29,039 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1501 transitions. Word has length 49 [2020-11-12 12:19:29,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:29,040 INFO L481 AbstractCegarLoop]: Abstraction has 1343 states and 1501 transitions. [2020-11-12 12:19:29,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2020-11-12 12:19:29,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1501 transitions. [2020-11-12 12:19:29,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-12 12:19:29,043 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:29,043 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:19:29,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-12 12:19:29,043 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:29,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:29,044 INFO L82 PathProgramCache]: Analyzing trace with hash 409992179, now seen corresponding path program 1 times [2020-11-12 12:19:29,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:29,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741568177] [2020-11-12 12:19:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:29,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741568177] [2020-11-12 12:19:29,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:29,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-12 12:19:29,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537494826] [2020-11-12 12:19:29,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-12 12:19:29,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:29,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-12 12:19:29,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-12 12:19:29,258 INFO L87 Difference]: Start difference. First operand 1343 states and 1501 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:29,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:29,512 INFO L93 Difference]: Finished difference Result 984 states and 1043 transitions. [2020-11-12 12:19:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-12 12:19:29,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2020-11-12 12:19:29,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:29,516 INFO L225 Difference]: With dead ends: 984 [2020-11-12 12:19:29,516 INFO L226 Difference]: Without dead ends: 470 [2020-11-12 12:19:29,516 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-11-12 12:19:29,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2020-11-12 12:19:29,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2020-11-12 12:19:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 443 states have (on average 1.0586907449209932) internal successors, (469), 469 states have internal predecessors, (469), 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) [2020-11-12 12:19:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 469 transitions. [2020-11-12 12:19:29,526 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 469 transitions. Word has length 51 [2020-11-12 12:19:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:29,526 INFO L481 AbstractCegarLoop]: Abstraction has 470 states and 469 transitions. [2020-11-12 12:19:29,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 469 transitions. [2020-11-12 12:19:29,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-12 12:19:29,528 INFO L486 BasicCegarLoop]: Found error trace [2020-11-12 12:19:29,528 INFO L494 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-12 12:19:29,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-12 12:19:29,528 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-12 12:19:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-12 12:19:29,529 INFO L82 PathProgramCache]: Analyzing trace with hash 801746514, now seen corresponding path program 1 times [2020-11-12 12:19:29,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-12 12:19:29,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017640015] [2020-11-12 12:19:29,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-12 12:19:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-12 12:19:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-12 12:19:29,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017640015] [2020-11-12 12:19:29,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-12 12:19:29,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-12 12:19:29,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522856579] [2020-11-12 12:19:29,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-12 12:19:29,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-12 12:19:29,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-12 12:19:29,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-12 12:19:29,650 INFO L87 Difference]: Start difference. First operand 470 states and 469 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:29,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-12 12:19:29,777 INFO L93 Difference]: Finished difference Result 362 states and 361 transitions. [2020-11-12 12:19:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-12 12:19:29,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2020-11-12 12:19:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-12 12:19:29,778 INFO L225 Difference]: With dead ends: 362 [2020-11-12 12:19:29,778 INFO L226 Difference]: Without dead ends: 0 [2020-11-12 12:19:29,778 INFO L749 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-12 12:19:29,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-12 12:19:29,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-12 12:19:29,779 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) [2020-11-12 12:19:29,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-12 12:19:29,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2020-11-12 12:19:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-12 12:19:29,779 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-12 12:19:29,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-11-12 12:19:29,780 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-12 12:19:29,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-12 12:19:29,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-12 12:19:29,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 12:19:29 BasicIcfg [2020-11-12 12:19:29,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-12 12:19:29,787 INFO L168 Benchmark]: Toolchain (without parser) took 9349.19 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 805.3 MB). Free memory was 277.4 MB in the beginning and 944.3 MB in the end (delta: -666.9 MB). Peak memory consumption was 140.8 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:29,788 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-11-12 12:19:29,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.44 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.7 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:29,789 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:29,790 INFO L168 Benchmark]: Boogie Preprocessor took 27.61 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 242.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:29,791 INFO L168 Benchmark]: RCFGBuilder took 617.34 ms. Allocated memory is still 302.0 MB. Free memory was 242.4 MB in the beginning and 263.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:29,791 INFO L168 Benchmark]: TraceAbstraction took 7931.13 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 805.3 MB). Free memory was 263.5 MB in the beginning and 944.3 MB in the end (delta: -680.7 MB). Peak memory consumption was 125.6 MB. Max. memory is 16.0 GB. [2020-11-12 12:19:29,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.76 ms. Allocated memory is still 302.0 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 711.44 ms. Allocated memory is still 302.0 MB. Free memory was 276.7 MB in the beginning and 245.7 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 49.64 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 243.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 27.61 ms. Allocated memory is still 302.0 MB. Free memory was 243.8 MB in the beginning and 242.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 617.34 ms. Allocated memory is still 302.0 MB. Free memory was 242.4 MB in the beginning and 263.5 MB in the end (delta: -21.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * TraceAbstraction took 7931.13 ms. Allocated memory was 302.0 MB in the beginning and 1.1 GB in the end (delta: 805.3 MB). Free memory was 263.5 MB in the beginning and 944.3 MB in the end (delta: -680.7 MB). Peak memory consumption was 125.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.8s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 728 SDtfs, 830 SDslu, 2695 SDs, 0 SdLazy, 324 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34478occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 496 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 515 NumberOfCodeBlocks, 515 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 60016 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...