/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 15:22:37,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 15:22:37,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 15:22:37,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 15:22:37,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-12 15:22:37,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-12 15:22:37,537 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-12 15:22:37,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-12 15:22:37,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-12 15:22:37,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-12 15:22:37,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-12 15:22:37,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-12 15:22:37,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-12 15:22:37,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-12 15:22:37,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-12 15:22:37,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-12 15:22:37,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-12 15:22:37,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 15:22:37,551 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 15:22:37,552 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 15:22:37,552 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-12 15:22:37,571 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 15:22:37,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 15:22:37,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 15:22:37,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 15:22:37,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 15:22:37,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 15:22:37,572 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 15:22:37,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 15:22:37,573 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 15:22:37,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 15:22:37,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 15:22:37,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 15:22:37,574 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 15:22:37,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 15:22:37,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 15:22:37,574 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 15:22:37,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 15:22:37,574 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 15:22:37,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 15:22:37,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 15:22:37,586 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 15:22:37,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 15:22:37,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 15:22:37,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 15:22:37,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 15:22:37,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 15:22:37,841 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 15:22:37,842 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 15:22:37,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2021-06-12 15:22:37,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63f34621/533fc841b534418697087be7200b6af2/FLAGa5245b301 [2021-06-12 15:22:38,550 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 15:22:38,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2021-06-12 15:22:38,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63f34621/533fc841b534418697087be7200b6af2/FLAGa5245b301 [2021-06-12 15:22:38,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e63f34621/533fc841b534418697087be7200b6af2 [2021-06-12 15:22:38,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 15:22:38,671 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 15:22:38,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 15:22:38,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 15:22:38,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 15:22:38,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:22:38" (1/1) ... [2021-06-12 15:22:38,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:38, skipping insertion in model container [2021-06-12 15:22:38,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 03:22:38" (1/1) ... [2021-06-12 15:22:38,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 15:22:38,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 15:22:39,066 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2021-06-12 15:22:39,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:22:39,099 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 15:22:39,132 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i[41520,41533] [2021-06-12 15:22:39,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 15:22:39,219 INFO L208 MainTranslator]: Completed translation [2021-06-12 15:22:39,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39 WrapperNode [2021-06-12 15:22:39,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 15:22:39,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 15:22:39,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 15:22:39,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 15:22:39,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 15:22:39,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 15:22:39,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 15:22:39,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 15:22:39,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... [2021-06-12 15:22:39,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 15:22:39,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 15:22:39,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 15:22:39,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 15:22:39,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 15:22:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2021-06-12 15:22:39,341 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2021-06-12 15:22:39,341 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2021-06-12 15:22:39,342 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2021-06-12 15:22:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 15:22:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 15:22:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-12 15:22:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 15:22:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-06-12 15:22:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 15:22:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 15:22:39,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 15:22:39,344 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 15:22:39,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 15:22:39,674 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-06-12 15:22:39,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:22:39 BoogieIcfgContainer [2021-06-12 15:22:39,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 15:22:39,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 15:22:39,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 15:22:39,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 15:22:39,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 03:22:38" (1/3) ... [2021-06-12 15:22:39,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a6ca90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:22:39, skipping insertion in model container [2021-06-12 15:22:39,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 03:22:39" (2/3) ... [2021-06-12 15:22:39,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a6ca90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 03:22:39, skipping insertion in model container [2021-06-12 15:22:39,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 03:22:39" (3/3) ... [2021-06-12 15:22:39,680 INFO L111 eAbstractionObserver]: Analyzing ICFG stack-2.i [2021-06-12 15:22:39,684 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 15:22:39,684 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 15:22:39,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-12 15:22:39,684 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 15:22:39,707 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,707 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,707 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,708 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,709 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,710 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,711 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,712 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,713 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,714 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,715 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,716 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,717 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,718 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,720 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,720 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,720 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,720 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,720 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,720 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,721 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,722 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,723 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,724 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,725 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,726 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,727 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,728 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,729 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,730 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,731 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,732 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~x| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,732 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,732 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~ret47| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,732 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~nondet36| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,732 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#t~ret38| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post44| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_inc_top_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_push_~x not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,733 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet46| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_push_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,734 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~nondet45| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret39| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,737 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,737 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_dec_top_#t~post34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~ret42| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~ret50| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~nondet49| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~mem43| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_get_top_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#t~nondet40| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post48| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,738 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_pop_#in~stack.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,739 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,739 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_pop_~stack.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 15:22:39,744 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-12 15:22:39,757 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:22:39,769 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:22:39,769 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:22:39,769 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:22:39,769 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:22:39,769 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:22:39,769 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:22:39,769 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:22:39,769 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1Thread1of1ForFork0======== [2021-06-12 15:22:39,778 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 156 places, 161 transitions, 344 flow [2021-06-12 15:22:40,105 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 15:22:40,182 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:40,182 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:40,183 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:40,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1983023351, now seen corresponding path program 1 times [2021-06-12 15:22:40,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:40,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454271625] [2021-06-12 15:22:40,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:40,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:40,413 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:40,414 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454271625] [2021-06-12 15:22:40,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454271625] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:22:40,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:22:40,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:22:40,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234542647] [2021-06-12 15:22:40,420 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:22:40,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:22:40,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:22:40,449 INFO L87 Difference]: Start difference. First operand has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 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 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:40,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:40,595 INFO L93 Difference]: Finished difference Result 14515 states and 39967 transitions. [2021-06-12 15:22:40,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:22:40,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-12 15:22:40,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:40,663 INFO L225 Difference]: With dead ends: 14515 [2021-06-12 15:22:40,663 INFO L226 Difference]: Without dead ends: 12848 [2021-06-12 15:22:40,664 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:22:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12848 states. [2021-06-12 15:22:41,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12848 to 11435. [2021-06-12 15:22:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11435 states, 11433 states have (on average 2.770926266071897) internal successors, (31680), 11434 states have internal predecessors, (31680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11435 states to 11435 states and 31680 transitions. [2021-06-12 15:22:41,107 INFO L78 Accepts]: Start accepts. Automaton has 11435 states and 31680 transitions. Word has length 58 [2021-06-12 15:22:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:41,109 INFO L482 AbstractCegarLoop]: Abstraction has 11435 states and 31680 transitions. [2021-06-12 15:22:41,110 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:41,113 INFO L276 IsEmpty]: Start isEmpty. Operand 11435 states and 31680 transitions. [2021-06-12 15:22:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-06-12 15:22:41,122 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:41,122 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:41,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 15:22:41,122 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:41,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash -24631517, now seen corresponding path program 1 times [2021-06-12 15:22:41,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:41,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338029557] [2021-06-12 15:22:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:41,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:41,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338029557] [2021-06-12 15:22:41,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338029557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:22:41,219 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:22:41,220 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-12 15:22:41,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246774795] [2021-06-12 15:22:41,220 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-12 15:22:41,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:41,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-12 15:22:41,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-12 15:22:41,221 INFO L87 Difference]: Start difference. First operand 11435 states and 31680 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:41,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:41,319 INFO L93 Difference]: Finished difference Result 15295 states and 42320 transitions. [2021-06-12 15:22:41,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-12 15:22:41,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 67 [2021-06-12 15:22:41,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:41,437 INFO L225 Difference]: With dead ends: 15295 [2021-06-12 15:22:41,438 INFO L226 Difference]: Without dead ends: 15295 [2021-06-12 15:22:41,438 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:22:41,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15295 states. [2021-06-12 15:22:41,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15295 to 12014. [2021-06-12 15:22:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12014 states, 12012 states have (on average 2.7702297702297702) internal successors, (33276), 12013 states have internal predecessors, (33276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12014 states to 12014 states and 33276 transitions. [2021-06-12 15:22:41,738 INFO L78 Accepts]: Start accepts. Automaton has 12014 states and 33276 transitions. Word has length 67 [2021-06-12 15:22:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:41,739 INFO L482 AbstractCegarLoop]: Abstraction has 12014 states and 33276 transitions. [2021-06-12 15:22:41,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 12014 states and 33276 transitions. [2021-06-12 15:22:41,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-06-12 15:22:41,752 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:41,752 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:41,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 15:22:41,753 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:41,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:41,753 INFO L82 PathProgramCache]: Analyzing trace with hash -939681264, now seen corresponding path program 1 times [2021-06-12 15:22:41,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:41,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925635479] [2021-06-12 15:22:41,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:41,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:41,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:41,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925635479] [2021-06-12 15:22:41,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925635479] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:22:41,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:22:41,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-12 15:22:41,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007192889] [2021-06-12 15:22:41,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-12 15:22:41,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:41,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-12 15:22:41,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-12 15:22:41,800 INFO L87 Difference]: Start difference. First operand 12014 states and 33276 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:42,016 INFO L93 Difference]: Finished difference Result 19272 states and 53355 transitions. [2021-06-12 15:22:42,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 15:22:42,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 84 [2021-06-12 15:22:42,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:42,055 INFO L225 Difference]: With dead ends: 19272 [2021-06-12 15:22:42,055 INFO L226 Difference]: Without dead ends: 19272 [2021-06-12 15:22:42,056 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-12 15:22:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19272 states. [2021-06-12 15:22:42,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19272 to 12552. [2021-06-12 15:22:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 12550 states have (on average 2.767808764940239) internal successors, (34736), 12551 states have internal predecessors, (34736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:42,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 34736 transitions. [2021-06-12 15:22:42,381 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 34736 transitions. Word has length 84 [2021-06-12 15:22:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:42,383 INFO L482 AbstractCegarLoop]: Abstraction has 12552 states and 34736 transitions. [2021-06-12 15:22:42,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 34736 transitions. [2021-06-12 15:22:42,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-06-12 15:22:42,397 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:42,398 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:42,398 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 15:22:42,398 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:42,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:42,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1191059461, now seen corresponding path program 1 times [2021-06-12 15:22:42,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:42,399 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466402171] [2021-06-12 15:22:42,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:42,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:42,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466402171] [2021-06-12 15:22:42,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466402171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:42,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123967451] [2021-06-12 15:22:42,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:42,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:42,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-12 15:22:42,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:42,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:42,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123967451] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:42,880 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:42,881 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-12 15:22:42,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450846618] [2021-06-12 15:22:42,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 15:22:42,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:42,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 15:22:42,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 15:22:42,883 INFO L87 Difference]: Start difference. First operand 12552 states and 34736 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:42,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:42,983 INFO L93 Difference]: Finished difference Result 18885 states and 52109 transitions. [2021-06-12 15:22:42,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-12 15:22:42,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 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 93 [2021-06-12 15:22:42,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:43,018 INFO L225 Difference]: With dead ends: 18885 [2021-06-12 15:22:43,019 INFO L226 Difference]: Without dead ends: 18885 [2021-06-12 15:22:43,019 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-12 15:22:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18885 states. [2021-06-12 15:22:43,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18885 to 17189. [2021-06-12 15:22:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17189 states, 17187 states have (on average 2.7595275498923604) internal successors, (47428), 17188 states have internal predecessors, (47428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17189 states to 17189 states and 47428 transitions. [2021-06-12 15:22:43,411 INFO L78 Accepts]: Start accepts. Automaton has 17189 states and 47428 transitions. Word has length 93 [2021-06-12 15:22:43,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:43,411 INFO L482 AbstractCegarLoop]: Abstraction has 17189 states and 47428 transitions. [2021-06-12 15:22:43,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 17189 states and 47428 transitions. [2021-06-12 15:22:43,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-06-12 15:22:43,436 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:43,436 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:43,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:43,649 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:43,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:43,649 INFO L82 PathProgramCache]: Analyzing trace with hash -783912900, now seen corresponding path program 1 times [2021-06-12 15:22:43,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:43,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721381974] [2021-06-12 15:22:43,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-12 15:22:43,690 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:43,690 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721381974] [2021-06-12 15:22:43,690 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721381974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:22:43,691 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:22:43,691 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:22:43,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361572148] [2021-06-12 15:22:43,691 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:22:43,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:43,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:22:43,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:22:43,692 INFO L87 Difference]: Start difference. First operand 17189 states and 47428 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:43,718 INFO L93 Difference]: Finished difference Result 6921 states and 17823 transitions. [2021-06-12 15:22:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:22:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 119 [2021-06-12 15:22:43,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:43,730 INFO L225 Difference]: With dead ends: 6921 [2021-06-12 15:22:43,730 INFO L226 Difference]: Without dead ends: 6729 [2021-06-12 15:22:43,730 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:22:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2021-06-12 15:22:43,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 6649. [2021-06-12 15:22:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6649 states, 6647 states have (on average 2.5766511208063787) internal successors, (17127), 6648 states have internal predecessors, (17127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:43,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6649 states to 6649 states and 17127 transitions. [2021-06-12 15:22:43,833 INFO L78 Accepts]: Start accepts. Automaton has 6649 states and 17127 transitions. Word has length 119 [2021-06-12 15:22:43,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:43,834 INFO L482 AbstractCegarLoop]: Abstraction has 6649 states and 17127 transitions. [2021-06-12 15:22:43,834 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 6649 states and 17127 transitions. [2021-06-12 15:22:43,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-06-12 15:22:43,848 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:43,848 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:43,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 15:22:43,848 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:43,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:43,849 INFO L82 PathProgramCache]: Analyzing trace with hash 804766153, now seen corresponding path program 2 times [2021-06-12 15:22:43,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:43,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416271069] [2021-06-12 15:22:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:44,042 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:44,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:44,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416271069] [2021-06-12 15:22:44,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416271069] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:44,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569255578] [2021-06-12 15:22:44,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:44,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:22:44,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:44,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:22:44,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:44,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569255578] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:44,345 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:44,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-12 15:22:44,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392021203] [2021-06-12 15:22:44,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-12 15:22:44,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:44,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-12 15:22:44,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-06-12 15:22:44,350 INFO L87 Difference]: Start difference. First operand 6649 states and 17127 transitions. Second operand has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:44,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:44,469 INFO L93 Difference]: Finished difference Result 9521 states and 24504 transitions. [2021-06-12 15:22:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 15:22:44,472 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 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 128 [2021-06-12 15:22:44,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:44,481 INFO L225 Difference]: With dead ends: 9521 [2021-06-12 15:22:44,481 INFO L226 Difference]: Without dead ends: 9521 [2021-06-12 15:22:44,481 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 46.6ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:22:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9521 states. [2021-06-12 15:22:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9521 to 8884. [2021-06-12 15:22:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8884 states, 8882 states have (on average 2.5761089844629588) internal successors, (22881), 8883 states have internal predecessors, (22881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:44,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8884 states to 8884 states and 22881 transitions. [2021-06-12 15:22:44,608 INFO L78 Accepts]: Start accepts. Automaton has 8884 states and 22881 transitions. Word has length 128 [2021-06-12 15:22:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:44,608 INFO L482 AbstractCegarLoop]: Abstraction has 8884 states and 22881 transitions. [2021-06-12 15:22:44,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 19.88888888888889) internal successors, (179), 9 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:44,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8884 states and 22881 transitions. [2021-06-12 15:22:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-06-12 15:22:44,618 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:44,619 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:44,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:44,833 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:44,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:44,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1848043510, now seen corresponding path program 1 times [2021-06-12 15:22:44,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:44,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589068334] [2021-06-12 15:22:44,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:44,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:44,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589068334] [2021-06-12 15:22:44,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589068334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:44,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143604621] [2021-06-12 15:22:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:44,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 15:22:45,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:22:45,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143604621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:45,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:45,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-06-12 15:22:45,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287320511] [2021-06-12 15:22:45,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 15:22:45,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:45,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 15:22:45,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-12 15:22:45,205 INFO L87 Difference]: Start difference. First operand 8884 states and 22881 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:45,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:45,381 INFO L93 Difference]: Finished difference Result 12154 states and 31386 transitions. [2021-06-12 15:22:45,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 15:22:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 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 133 [2021-06-12 15:22:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:45,395 INFO L225 Difference]: With dead ends: 12154 [2021-06-12 15:22:45,395 INFO L226 Difference]: Without dead ends: 12154 [2021-06-12 15:22:45,396 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 84.8ms TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:22:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12154 states. [2021-06-12 15:22:45,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12154 to 10704. [2021-06-12 15:22:45,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10704 states, 10702 states have (on average 2.5978321809007663) internal successors, (27802), 10703 states have internal predecessors, (27802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:45,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10704 states to 10704 states and 27802 transitions. [2021-06-12 15:22:45,572 INFO L78 Accepts]: Start accepts. Automaton has 10704 states and 27802 transitions. Word has length 133 [2021-06-12 15:22:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:45,572 INFO L482 AbstractCegarLoop]: Abstraction has 10704 states and 27802 transitions. [2021-06-12 15:22:45,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 10704 states and 27802 transitions. [2021-06-12 15:22:45,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-06-12 15:22:45,586 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:45,586 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:45,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:45,801 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:45,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:45,801 INFO L82 PathProgramCache]: Analyzing trace with hash 139304251, now seen corresponding path program 3 times [2021-06-12 15:22:45,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:45,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499233649] [2021-06-12 15:22:45,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:45,887 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:45,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499233649] [2021-06-12 15:22:45,887 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499233649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:45,887 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824562476] [2021-06-12 15:22:45,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:46,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-12 15:22:46,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:46,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:22:46,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:46,273 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:46,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824562476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:46,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:46,274 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-12 15:22:46,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533494336] [2021-06-12 15:22:46,274 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 15:22:46,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:46,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 15:22:46,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:22:46,275 INFO L87 Difference]: Start difference. First operand 10704 states and 27802 transitions. Second operand has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 11 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:46,416 INFO L93 Difference]: Finished difference Result 14711 states and 37953 transitions. [2021-06-12 15:22:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 15:22:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 11 states have internal predecessors, (214), 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 163 [2021-06-12 15:22:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:46,434 INFO L225 Difference]: With dead ends: 14711 [2021-06-12 15:22:46,434 INFO L226 Difference]: Without dead ends: 14711 [2021-06-12 15:22:46,435 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 72.5ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-12 15:22:46,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14711 states. [2021-06-12 15:22:46,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14711 to 12939. [2021-06-12 15:22:46,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12939 states, 12937 states have (on average 2.5938007265981295) internal successors, (33556), 12938 states have internal predecessors, (33556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:46,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12939 states to 12939 states and 33556 transitions. [2021-06-12 15:22:46,665 INFO L78 Accepts]: Start accepts. Automaton has 12939 states and 33556 transitions. Word has length 163 [2021-06-12 15:22:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:46,665 INFO L482 AbstractCegarLoop]: Abstraction has 12939 states and 33556 transitions. [2021-06-12 15:22:46,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 19.454545454545453) internal successors, (214), 11 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:46,665 INFO L276 IsEmpty]: Start isEmpty. Operand 12939 states and 33556 transitions. [2021-06-12 15:22:46,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-06-12 15:22:46,680 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:46,680 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:46,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:46,899 INFO L430 AbstractCegarLoop]: === Iteration 9 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:46,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:46,899 INFO L82 PathProgramCache]: Analyzing trace with hash -2103744908, now seen corresponding path program 2 times [2021-06-12 15:22:46,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:46,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801311475] [2021-06-12 15:22:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:22:46,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:46,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801311475] [2021-06-12 15:22:46,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801311475] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:46,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328828585] [2021-06-12 15:22:46,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:47,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:22:47,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:47,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 15:22:47,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 51 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:22:47,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328828585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:47,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:47,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-12 15:22:47,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615163335] [2021-06-12 15:22:47,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:22:47,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:22:47,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:22:47,303 INFO L87 Difference]: Start difference. First operand 12939 states and 33556 transitions. Second operand has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:47,427 INFO L93 Difference]: Finished difference Result 17344 states and 44835 transitions. [2021-06-12 15:22:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 15:22:47,427 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 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 168 [2021-06-12 15:22:47,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:47,447 INFO L225 Difference]: With dead ends: 17344 [2021-06-12 15:22:47,448 INFO L226 Difference]: Without dead ends: 17344 [2021-06-12 15:22:47,448 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-06-12 15:22:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17344 states. [2021-06-12 15:22:47,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17344 to 12939. [2021-06-12 15:22:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12939 states, 12937 states have (on average 2.5938007265981295) internal successors, (33556), 12938 states have internal predecessors, (33556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:47,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12939 states to 12939 states and 33556 transitions. [2021-06-12 15:22:47,668 INFO L78 Accepts]: Start accepts. Automaton has 12939 states and 33556 transitions. Word has length 168 [2021-06-12 15:22:47,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:47,668 INFO L482 AbstractCegarLoop]: Abstraction has 12939 states and 33556 transitions. [2021-06-12 15:22:47,668 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:47,668 INFO L276 IsEmpty]: Start isEmpty. Operand 12939 states and 33556 transitions. [2021-06-12 15:22:47,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-06-12 15:22:47,683 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:47,684 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:47,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:47,892 INFO L430 AbstractCegarLoop]: === Iteration 10 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:47,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:47,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1053229943, now seen corresponding path program 4 times [2021-06-12 15:22:47,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:47,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040377001] [2021-06-12 15:22:47,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:47,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:47,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040377001] [2021-06-12 15:22:47,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040377001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:47,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065076420] [2021-06-12 15:22:47,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:48,075 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:22:48,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:48,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:22:48,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:48,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065076420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:48,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:48,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:22:48,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919357593] [2021-06-12 15:22:48,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:22:48,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:48,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:22:48,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:22:48,326 INFO L87 Difference]: Start difference. First operand 12939 states and 33556 transitions. Second operand has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:48,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:48,541 INFO L93 Difference]: Finished difference Result 17026 states and 43911 transitions. [2021-06-12 15:22:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 15:22:48,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 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 198 [2021-06-12 15:22:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:48,560 INFO L225 Difference]: With dead ends: 17026 [2021-06-12 15:22:48,560 INFO L226 Difference]: Without dead ends: 17026 [2021-06-12 15:22:48,560 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 91.8ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:22:48,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17026 states. [2021-06-12 15:22:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17026 to 15174. [2021-06-12 15:22:48,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15174 states, 15172 states have (on average 2.5909570261007118) internal successors, (39310), 15173 states have internal predecessors, (39310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15174 states to 15174 states and 39310 transitions. [2021-06-12 15:22:48,756 INFO L78 Accepts]: Start accepts. Automaton has 15174 states and 39310 transitions. Word has length 198 [2021-06-12 15:22:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:48,757 INFO L482 AbstractCegarLoop]: Abstraction has 15174 states and 39310 transitions. [2021-06-12 15:22:48,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 15174 states and 39310 transitions. [2021-06-12 15:22:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-06-12 15:22:48,773 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:48,773 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:48,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:48,989 INFO L430 AbstractCegarLoop]: === Iteration 11 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:48,990 INFO L82 PathProgramCache]: Analyzing trace with hash -747494154, now seen corresponding path program 3 times [2021-06-12 15:22:48,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:48,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70853446] [2021-06-12 15:22:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 138 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:22:49,089 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:49,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70853446] [2021-06-12 15:22:49,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70853446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:49,089 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177056788] [2021-06-12 15:22:49,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:49,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-12 15:22:49,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:49,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:22:49,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 115 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:22:49,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177056788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:49,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:49,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-06-12 15:22:49,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110934103] [2021-06-12 15:22:49,464 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-12 15:22:49,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:49,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-12 15:22:49,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-12 15:22:49,465 INFO L87 Difference]: Start difference. First operand 15174 states and 39310 transitions. Second operand has 10 states, 10 states have (on average 22.9) internal successors, (229), 10 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:49,617 INFO L93 Difference]: Finished difference Result 20209 states and 52402 transitions. [2021-06-12 15:22:49,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:22:49,617 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 22.9) internal successors, (229), 10 states have internal predecessors, (229), 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 203 [2021-06-12 15:22:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:49,639 INFO L225 Difference]: With dead ends: 20209 [2021-06-12 15:22:49,639 INFO L226 Difference]: Without dead ends: 20209 [2021-06-12 15:22:49,639 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-06-12 15:22:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20209 states. [2021-06-12 15:22:49,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20209 to 16994. [2021-06-12 15:22:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16994 states, 16992 states have (on average 2.603048493408663) internal successors, (44231), 16993 states have internal predecessors, (44231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:49,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16994 states to 16994 states and 44231 transitions. [2021-06-12 15:22:49,866 INFO L78 Accepts]: Start accepts. Automaton has 16994 states and 44231 transitions. Word has length 203 [2021-06-12 15:22:49,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:49,867 INFO L482 AbstractCegarLoop]: Abstraction has 16994 states and 44231 transitions. [2021-06-12 15:22:49,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 22.9) internal successors, (229), 10 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:49,867 INFO L276 IsEmpty]: Start isEmpty. Operand 16994 states and 44231 transitions. [2021-06-12 15:22:49,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-06-12 15:22:49,884 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:49,884 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:50,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:50,097 INFO L430 AbstractCegarLoop]: === Iteration 12 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:50,097 INFO L82 PathProgramCache]: Analyzing trace with hash -830216394, now seen corresponding path program 4 times [2021-06-12 15:22:50,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:50,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947088467] [2021-06-12 15:22:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:22:50,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:50,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947088467] [2021-06-12 15:22:50,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947088467] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:50,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189645555] [2021-06-12 15:22:50,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:50,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:22:50,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:50,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 15:22:50,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:50,482 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:22:50,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189645555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:50,482 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:50,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-12 15:22:50,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374656160] [2021-06-12 15:22:50,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:22:50,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:50,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:22:50,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:22:50,484 INFO L87 Difference]: Start difference. First operand 16994 states and 44231 transitions. Second operand has 12 states, 12 states have (on average 20.916666666666668) internal successors, (251), 12 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:50,641 INFO L93 Difference]: Finished difference Result 21559 states and 55918 transitions. [2021-06-12 15:22:50,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-12 15:22:50,641 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.916666666666668) internal successors, (251), 12 states have internal predecessors, (251), 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 203 [2021-06-12 15:22:50,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:50,666 INFO L225 Difference]: With dead ends: 21559 [2021-06-12 15:22:50,666 INFO L226 Difference]: Without dead ends: 21559 [2021-06-12 15:22:50,667 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 85.0ms TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:22:50,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21559 states. [2021-06-12 15:22:50,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21559 to 16994. [2021-06-12 15:22:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16994 states, 16992 states have (on average 2.603048493408663) internal successors, (44231), 16993 states have internal predecessors, (44231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:50,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16994 states to 16994 states and 44231 transitions. [2021-06-12 15:22:50,973 INFO L78 Accepts]: Start accepts. Automaton has 16994 states and 44231 transitions. Word has length 203 [2021-06-12 15:22:50,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:50,973 INFO L482 AbstractCegarLoop]: Abstraction has 16994 states and 44231 transitions. [2021-06-12 15:22:50,973 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 20.916666666666668) internal successors, (251), 12 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:50,973 INFO L276 IsEmpty]: Start isEmpty. Operand 16994 states and 44231 transitions. [2021-06-12 15:22:50,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-06-12 15:22:50,990 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:50,990 INFO L472 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:51,191 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-06-12 15:22:51,191 INFO L430 AbstractCegarLoop]: === Iteration 13 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:51,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:51,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1449366917, now seen corresponding path program 5 times [2021-06-12 15:22:51,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:51,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265502701] [2021-06-12 15:22:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 303 proven. 137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:51,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:51,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265502701] [2021-06-12 15:22:51,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265502701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:51,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973329541] [2021-06-12 15:22:51,293 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:51,427 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-12 15:22:51,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:51,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:22:51,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:22:51,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973329541] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:22:51,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 15:22:51,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2021-06-12 15:22:51,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627926010] [2021-06-12 15:22:51,701 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:22:51,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:51,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:22:51,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:22:51,701 INFO L87 Difference]: Start difference. First operand 16994 states and 44231 transitions. Second operand has 13 states, 13 states have (on average 17.923076923076923) internal successors, (233), 13 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:51,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:51,936 INFO L93 Difference]: Finished difference Result 34886 states and 90981 transitions. [2021-06-12 15:22:51,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 15:22:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.923076923076923) internal successors, (233), 13 states have internal predecessors, (233), 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 233 [2021-06-12 15:22:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:51,960 INFO L225 Difference]: With dead ends: 34886 [2021-06-12 15:22:51,960 INFO L226 Difference]: Without dead ends: 19371 [2021-06-12 15:22:51,960 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 122.2ms TimeCoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:22:51,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19371 states. [2021-06-12 15:22:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19371 to 18186. [2021-06-12 15:22:52,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18186 states, 18184 states have (on average 2.596183457985042) internal successors, (47209), 18185 states have internal predecessors, (47209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18186 states to 18186 states and 47209 transitions. [2021-06-12 15:22:52,211 INFO L78 Accepts]: Start accepts. Automaton has 18186 states and 47209 transitions. Word has length 233 [2021-06-12 15:22:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:52,212 INFO L482 AbstractCegarLoop]: Abstraction has 18186 states and 47209 transitions. [2021-06-12 15:22:52,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 17.923076923076923) internal successors, (233), 13 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 18186 states and 47209 transitions. [2021-06-12 15:22:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-06-12 15:22:52,230 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:52,230 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:52,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:52,433 INFO L430 AbstractCegarLoop]: === Iteration 14 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1487708345, now seen corresponding path program 1 times [2021-06-12 15:22:52,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:52,433 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447446877] [2021-06-12 15:22:52,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 9 proven. 155 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-06-12 15:22:52,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:52,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447446877] [2021-06-12 15:22:52,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447446877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:52,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153406860] [2021-06-12 15:22:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:52,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:22:52,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:52,886 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 9 proven. 131 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-06-12 15:22:52,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153406860] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:52,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:52,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-06-12 15:22:52,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167477733] [2021-06-12 15:22:52,888 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 15:22:52,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:52,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 15:22:52,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:22:52,888 INFO L87 Difference]: Start difference. First operand 18186 states and 47209 transitions. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:53,084 INFO L93 Difference]: Finished difference Result 29456 states and 76308 transitions. [2021-06-12 15:22:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 15:22:53,084 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 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 237 [2021-06-12 15:22:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:53,102 INFO L225 Difference]: With dead ends: 29456 [2021-06-12 15:22:53,102 INFO L226 Difference]: Without dead ends: 16081 [2021-06-12 15:22:53,102 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:22:53,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16081 states. [2021-06-12 15:22:53,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16081 to 14441. [2021-06-12 15:22:53,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14441 states, 14439 states have (on average 2.5730313733638064) internal successors, (37152), 14440 states have internal predecessors, (37152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:53,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14441 states to 14441 states and 37152 transitions. [2021-06-12 15:22:53,364 INFO L78 Accepts]: Start accepts. Automaton has 14441 states and 37152 transitions. Word has length 237 [2021-06-12 15:22:53,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:53,364 INFO L482 AbstractCegarLoop]: Abstraction has 14441 states and 37152 transitions. [2021-06-12 15:22:53,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:53,364 INFO L276 IsEmpty]: Start isEmpty. Operand 14441 states and 37152 transitions. [2021-06-12 15:22:53,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-06-12 15:22:53,377 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:53,377 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:53,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:53,578 INFO L430 AbstractCegarLoop]: === Iteration 15 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:53,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:53,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1149059822, now seen corresponding path program 5 times [2021-06-12 15:22:53,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:53,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816741618] [2021-06-12 15:22:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 258 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-12 15:22:53,677 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:53,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816741618] [2021-06-12 15:22:53,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816741618] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:53,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852456091] [2021-06-12 15:22:53,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:53,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-12 15:22:53,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:53,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:22:53,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:54,083 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:22:54,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852456091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:54,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:54,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-06-12 15:22:54,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321927156] [2021-06-12 15:22:54,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:22:54,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:54,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:22:54,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:22:54,084 INFO L87 Difference]: Start difference. First operand 14441 states and 37152 transitions. Second operand has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:54,266 INFO L93 Difference]: Finished difference Result 18821 states and 48492 transitions. [2021-06-12 15:22:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 15:22:54,267 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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 238 [2021-06-12 15:22:54,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:54,286 INFO L225 Difference]: With dead ends: 18821 [2021-06-12 15:22:54,286 INFO L226 Difference]: Without dead ends: 16716 [2021-06-12 15:22:54,288 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 114.1ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-06-12 15:22:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16716 states. [2021-06-12 15:22:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16716 to 14396. [2021-06-12 15:22:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14396 states, 14394 states have (on average 2.5740586355425874) internal successors, (37051), 14395 states have internal predecessors, (37051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:54,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14396 states to 14396 states and 37051 transitions. [2021-06-12 15:22:54,471 INFO L78 Accepts]: Start accepts. Automaton has 14396 states and 37051 transitions. Word has length 238 [2021-06-12 15:22:54,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:54,472 INFO L482 AbstractCegarLoop]: Abstraction has 14396 states and 37051 transitions. [2021-06-12 15:22:54,472 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 14396 states and 37051 transitions. [2021-06-12 15:22:54,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-06-12 15:22:54,485 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:54,485 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:54,689 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-12 15:22:54,689 INFO L430 AbstractCegarLoop]: === Iteration 16 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:54,689 INFO L82 PathProgramCache]: Analyzing trace with hash 1923243252, now seen corresponding path program 6 times [2021-06-12 15:22:54,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:54,690 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686683725] [2021-06-12 15:22:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:22:54,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:54,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686683725] [2021-06-12 15:22:54,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686683725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:54,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169567183] [2021-06-12 15:22:54,787 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:54,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-12 15:22:54,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:54,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:22:54,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 235 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-12 15:22:55,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169567183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:55,190 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:55,190 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-12 15:22:55,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123266912] [2021-06-12 15:22:55,191 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 15:22:55,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:55,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 15:22:55,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-12 15:22:55,191 INFO L87 Difference]: Start difference. First operand 14396 states and 37051 transitions. Second operand has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:55,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:55,328 INFO L93 Difference]: Finished difference Result 15486 states and 39869 transitions. [2021-06-12 15:22:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-12 15:22:55,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 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 238 [2021-06-12 15:22:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:55,343 INFO L225 Difference]: With dead ends: 15486 [2021-06-12 15:22:55,343 INFO L226 Difference]: Without dead ends: 13906 [2021-06-12 15:22:55,344 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 82.8ms TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-06-12 15:22:55,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13906 states. [2021-06-12 15:22:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13906 to 11186. [2021-06-12 15:22:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11186 states, 11184 states have (on average 2.5691165951359083) internal successors, (28733), 11185 states have internal predecessors, (28733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 28733 transitions. [2021-06-12 15:22:55,484 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 28733 transitions. Word has length 238 [2021-06-12 15:22:55,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:55,484 INFO L482 AbstractCegarLoop]: Abstraction has 11186 states and 28733 transitions. [2021-06-12 15:22:55,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 22.0) internal successors, (264), 12 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 28733 transitions. [2021-06-12 15:22:55,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-06-12 15:22:55,494 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:55,494 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:55,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-12 15:22:55,705 INFO L430 AbstractCegarLoop]: === Iteration 17 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:55,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:55,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1840521012, now seen corresponding path program 7 times [2021-06-12 15:22:55,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:55,705 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912839895] [2021-06-12 15:22:55,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:55,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:22:55,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:55,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912839895] [2021-06-12 15:22:55,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912839895] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:55,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539210564] [2021-06-12 15:22:55,793 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:55,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 15:22:55,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:56,232 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 12 proven. 256 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-06-12 15:22:56,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539210564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:56,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:56,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2021-06-12 15:22:56,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206625352] [2021-06-12 15:22:56,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-12 15:22:56,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:56,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-12 15:22:56,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-12 15:22:56,234 INFO L87 Difference]: Start difference. First operand 11186 states and 28733 transitions. Second operand has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:56,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:56,510 INFO L93 Difference]: Finished difference Result 16776 states and 43186 transitions. [2021-06-12 15:22:56,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:22:56,510 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 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 238 [2021-06-12 15:22:56,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:56,525 INFO L225 Difference]: With dead ends: 16776 [2021-06-12 15:22:56,525 INFO L226 Difference]: Without dead ends: 12006 [2021-06-12 15:22:56,526 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 216.7ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-06-12 15:22:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12006 states. [2021-06-12 15:22:56,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12006 to 9926. [2021-06-12 15:22:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9926 states, 9924 states have (on average 2.5758766626360337) internal successors, (25563), 9925 states have internal predecessors, (25563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9926 states to 9926 states and 25563 transitions. [2021-06-12 15:22:56,695 INFO L78 Accepts]: Start accepts. Automaton has 9926 states and 25563 transitions. Word has length 238 [2021-06-12 15:22:56,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:56,695 INFO L482 AbstractCegarLoop]: Abstraction has 9926 states and 25563 transitions. [2021-06-12 15:22:56,695 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 20.428571428571427) internal successors, (286), 14 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:56,695 INFO L276 IsEmpty]: Start isEmpty. Operand 9926 states and 25563 transitions. [2021-06-12 15:22:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-06-12 15:22:56,706 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:56,706 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:56,906 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-12 15:22:56,907 INFO L430 AbstractCegarLoop]: === Iteration 18 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:56,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:56,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1633509679, now seen corresponding path program 2 times [2021-06-12 15:22:56,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:56,907 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036530410] [2021-06-12 15:22:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:57,031 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 275 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-06-12 15:22:57,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:57,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036530410] [2021-06-12 15:22:57,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036530410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:57,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126989699] [2021-06-12 15:22:57,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:57,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 15:22:57,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:57,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 15:22:57,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 251 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-06-12 15:22:57,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126989699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:57,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:57,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-06-12 15:22:57,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061464301] [2021-06-12 15:22:57,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:22:57,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:22:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:22:57,517 INFO L87 Difference]: Start difference. First operand 9926 states and 25563 transitions. Second operand has 13 states, 13 states have (on average 21.846153846153847) internal successors, (284), 13 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:57,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:57,709 INFO L93 Difference]: Finished difference Result 13996 states and 36100 transitions. [2021-06-12 15:22:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-12 15:22:57,709 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.846153846153847) internal successors, (284), 13 states have internal predecessors, (284), 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 272 [2021-06-12 15:22:57,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:57,718 INFO L225 Difference]: With dead ends: 13996 [2021-06-12 15:22:57,718 INFO L226 Difference]: Without dead ends: 8586 [2021-06-12 15:22:57,719 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 115.9ms TimeCoverageRelationStatistics Valid=156, Invalid=444, Unknown=0, NotChecked=0, Total=600 [2021-06-12 15:22:57,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8586 states. [2021-06-12 15:22:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8586 to 8586. [2021-06-12 15:22:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8586 states, 8584 states have (on average 2.570596458527493) internal successors, (22066), 8585 states have internal predecessors, (22066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8586 states to 8586 states and 22066 transitions. [2021-06-12 15:22:57,830 INFO L78 Accepts]: Start accepts. Automaton has 8586 states and 22066 transitions. Word has length 272 [2021-06-12 15:22:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:57,831 INFO L482 AbstractCegarLoop]: Abstraction has 8586 states and 22066 transitions. [2021-06-12 15:22:57,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 21.846153846153847) internal successors, (284), 13 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:57,831 INFO L276 IsEmpty]: Start isEmpty. Operand 8586 states and 22066 transitions. [2021-06-12 15:22:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-06-12 15:22:57,840 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:57,840 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:58,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:58,040 INFO L430 AbstractCegarLoop]: === Iteration 19 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:58,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:58,041 INFO L82 PathProgramCache]: Analyzing trace with hash -937600713, now seen corresponding path program 3 times [2021-06-12 15:22:58,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:58,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403870580] [2021-06-12 15:22:58,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:58,144 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 12 proven. 252 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-06-12 15:22:58,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:58,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403870580] [2021-06-12 15:22:58,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403870580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:58,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108668405] [2021-06-12 15:22:58,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:58,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-12 15:22:58,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:58,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-12 15:22:58,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-06-12 15:22:58,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108668405] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:22:58,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 15:22:58,611 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2021-06-12 15:22:58,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740888175] [2021-06-12 15:22:58,611 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 15:22:58,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:58,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 15:22:58,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-12 15:22:58,612 INFO L87 Difference]: Start difference. First operand 8586 states and 22066 transitions. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:58,732 INFO L93 Difference]: Finished difference Result 9936 states and 25547 transitions. [2021-06-12 15:22:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 15:22:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 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 272 [2021-06-12 15:22:58,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:58,742 INFO L225 Difference]: With dead ends: 9936 [2021-06-12 15:22:58,742 INFO L226 Difference]: Without dead ends: 9406 [2021-06-12 15:22:58,742 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 115.8ms TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-06-12 15:22:58,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9406 states. [2021-06-12 15:22:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9406 to 9326. [2021-06-12 15:22:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9326 states, 9324 states have (on average 2.573251823251823) internal successors, (23993), 9325 states have internal predecessors, (23993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:58,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9326 states to 9326 states and 23993 transitions. [2021-06-12 15:22:58,846 INFO L78 Accepts]: Start accepts. Automaton has 9326 states and 23993 transitions. Word has length 272 [2021-06-12 15:22:58,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:58,846 INFO L482 AbstractCegarLoop]: Abstraction has 9326 states and 23993 transitions. [2021-06-12 15:22:58,846 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 9326 states and 23993 transitions. [2021-06-12 15:22:58,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-06-12 15:22:58,855 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:22:58,855 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:22:59,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:59,055 INFO L430 AbstractCegarLoop]: === Iteration 20 === [t1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:22:59,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:22:59,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1821126570, now seen corresponding path program 4 times [2021-06-12 15:22:59,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:22:59,056 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837505507] [2021-06-12 15:22:59,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:22:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:22:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 56 proven. 229 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-06-12 15:22:59,153 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:22:59,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837505507] [2021-06-12 15:22:59,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837505507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:59,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050835799] [2021-06-12 15:22:59,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:59,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 15:22:59,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 15:22:59,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 15:22:59,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 15:22:59,562 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 56 proven. 229 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-06-12 15:22:59,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050835799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 15:22:59,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 15:22:59,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-06-12 15:22:59,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653726746] [2021-06-12 15:22:59,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-12 15:22:59,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:22:59,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-12 15:22:59,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-12 15:22:59,564 INFO L87 Difference]: Start difference. First operand 9326 states and 23993 transitions. Second operand has 13 states, 13 states have (on average 22.23076923076923) internal successors, (289), 13 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:59,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:22:59,695 INFO L93 Difference]: Finished difference Result 9126 states and 23477 transitions. [2021-06-12 15:22:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-12 15:22:59,695 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 22.23076923076923) internal successors, (289), 13 states have internal predecessors, (289), 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 306 [2021-06-12 15:22:59,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:22:59,696 INFO L225 Difference]: With dead ends: 9126 [2021-06-12 15:22:59,696 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 15:22:59,696 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 96.3ms TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2021-06-12 15:22:59,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 15:22:59,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 15:22:59,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:59,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 15:22:59,696 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 306 [2021-06-12 15:22:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:22:59,696 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 15:22:59,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 22.23076923076923) internal successors, (289), 13 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:22:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 15:22:59,697 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:22:59,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 15:22:59,913 INFO L301 ceAbstractionStarter]: Result for error location t1Thread1of1ForFork0 was SAFE (1/5) [2021-06-12 15:22:59,914 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-12 15:22:59,915 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:22:59,915 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:22:59,915 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:22:59,915 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:22:59,915 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:22:59,915 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:22:59,915 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:22:59,915 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 15:22:59,917 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 156 places, 161 transitions, 344 flow [2021-06-12 15:23:00,110 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:23:00,149 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (2/5) [2021-06-12 15:23:00,149 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:23:00,149 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:23:00,149 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:23:00,149 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:23:00,149 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:23:00,150 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:23:00,150 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:23:00,150 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:23:00,150 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t2Thread1of1ForFork1======== [2021-06-12 15:23:00,151 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 156 places, 161 transitions, 344 flow [2021-06-12 15:23:00,324 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-06-12 15:23:00,339 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:00,339 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:00,339 INFO L430 AbstractCegarLoop]: === Iteration 1 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:00,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:00,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1138180608, now seen corresponding path program 1 times [2021-06-12 15:23:00,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:00,339 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112952735] [2021-06-12 15:23:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:00,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:00,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112952735] [2021-06-12 15:23:00,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112952735] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:00,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:00,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:23:00,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10866447] [2021-06-12 15:23:00,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:23:00,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:00,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:23:00,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:00,368 INFO L87 Difference]: Start difference. First operand has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 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 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:00,408 INFO L93 Difference]: Finished difference Result 11582 states and 31652 transitions. [2021-06-12 15:23:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:23:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-06-12 15:23:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:00,421 INFO L225 Difference]: With dead ends: 11582 [2021-06-12 15:23:00,421 INFO L226 Difference]: Without dead ends: 9843 [2021-06-12 15:23:00,422 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:00,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9843 states. [2021-06-12 15:23:00,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9843 to 9843. [2021-06-12 15:23:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9843 states, 9840 states have (on average 2.7578252032520325) internal successors, (27137), 9842 states have internal predecessors, (27137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9843 states to 9843 states and 27137 transitions. [2021-06-12 15:23:00,604 INFO L78 Accepts]: Start accepts. Automaton has 9843 states and 27137 transitions. Word has length 62 [2021-06-12 15:23:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:00,604 INFO L482 AbstractCegarLoop]: Abstraction has 9843 states and 27137 transitions. [2021-06-12 15:23:00,605 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,605 INFO L276 IsEmpty]: Start isEmpty. Operand 9843 states and 27137 transitions. [2021-06-12 15:23:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-06-12 15:23:00,610 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:00,610 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:00,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-12 15:23:00,610 INFO L430 AbstractCegarLoop]: === Iteration 2 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:00,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1845477142, now seen corresponding path program 1 times [2021-06-12 15:23:00,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:00,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720547455] [2021-06-12 15:23:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:00,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:00,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720547455] [2021-06-12 15:23:00,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720547455] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:00,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:00,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:23:00,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724864517] [2021-06-12 15:23:00,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:23:00,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:00,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:23:00,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:00,629 INFO L87 Difference]: Start difference. First operand 9843 states and 27137 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:00,647 INFO L93 Difference]: Finished difference Result 4431 states and 11394 transitions. [2021-06-12 15:23:00,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:23:00,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 88 [2021-06-12 15:23:00,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:00,652 INFO L225 Difference]: With dead ends: 4431 [2021-06-12 15:23:00,652 INFO L226 Difference]: Without dead ends: 4279 [2021-06-12 15:23:00,653 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2021-06-12 15:23:00,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 3101. [2021-06-12 15:23:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3101 states, 3099 states have (on average 2.580187157147467) internal successors, (7996), 3100 states have internal predecessors, (7996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 7996 transitions. [2021-06-12 15:23:00,698 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 7996 transitions. Word has length 88 [2021-06-12 15:23:00,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:00,698 INFO L482 AbstractCegarLoop]: Abstraction has 3101 states and 7996 transitions. [2021-06-12 15:23:00,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 7996 transitions. [2021-06-12 15:23:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-06-12 15:23:00,701 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:00,701 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:00,701 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-12 15:23:00,701 INFO L430 AbstractCegarLoop]: === Iteration 3 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:00,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:00,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1970420468, now seen corresponding path program 1 times [2021-06-12 15:23:00,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:00,702 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294015754] [2021-06-12 15:23:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:00,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:00,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:00,721 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294015754] [2021-06-12 15:23:00,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294015754] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:00,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:00,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 15:23:00,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142030278] [2021-06-12 15:23:00,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 15:23:00,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:00,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 15:23:00,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:00,722 INFO L87 Difference]: Start difference. First operand 3101 states and 7996 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:00,739 INFO L93 Difference]: Finished difference Result 3937 states and 10108 transitions. [2021-06-12 15:23:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 15:23:00,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 89 [2021-06-12 15:23:00,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:00,743 INFO L225 Difference]: With dead ends: 3937 [2021-06-12 15:23:00,743 INFO L226 Difference]: Without dead ends: 3937 [2021-06-12 15:23:00,743 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 15:23:00,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3937 states. [2021-06-12 15:23:00,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3937 to 3595. [2021-06-12 15:23:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 3593 states have (on average 2.572780406345672) internal successors, (9244), 3594 states have internal predecessors, (9244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 9244 transitions. [2021-06-12 15:23:00,786 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 9244 transitions. Word has length 89 [2021-06-12 15:23:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:00,786 INFO L482 AbstractCegarLoop]: Abstraction has 3595 states and 9244 transitions. [2021-06-12 15:23:00,786 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,786 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 9244 transitions. [2021-06-12 15:23:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-06-12 15:23:00,789 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:00,789 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:00,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-12 15:23:00,789 INFO L430 AbstractCegarLoop]: === Iteration 4 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:00,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:00,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1777911710, now seen corresponding path program 1 times [2021-06-12 15:23:00,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:00,790 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050993787] [2021-06-12 15:23:00,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:00,826 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:00,826 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050993787] [2021-06-12 15:23:00,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050993787] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:00,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:00,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 15:23:00,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833631898] [2021-06-12 15:23:00,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 15:23:00,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:00,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 15:23:00,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 15:23:00,827 INFO L87 Difference]: Start difference. First operand 3595 states and 9244 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:00,896 INFO L93 Difference]: Finished difference Result 6035 states and 15529 transitions. [2021-06-12 15:23:00,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 15:23:00,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 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 98 [2021-06-12 15:23:00,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:00,903 INFO L225 Difference]: With dead ends: 6035 [2021-06-12 15:23:00,903 INFO L226 Difference]: Without dead ends: 6035 [2021-06-12 15:23:00,903 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.2ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-12 15:23:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6035 states. [2021-06-12 15:23:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6035 to 4989. [2021-06-12 15:23:00,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4989 states, 4987 states have (on average 2.574493683577301) internal successors, (12839), 4988 states have internal predecessors, (12839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4989 states to 4989 states and 12839 transitions. [2021-06-12 15:23:00,967 INFO L78 Accepts]: Start accepts. Automaton has 4989 states and 12839 transitions. Word has length 98 [2021-06-12 15:23:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:00,968 INFO L482 AbstractCegarLoop]: Abstraction has 4989 states and 12839 transitions. [2021-06-12 15:23:00,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 4989 states and 12839 transitions. [2021-06-12 15:23:00,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-06-12 15:23:00,972 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:00,972 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:00,972 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-12 15:23:00,972 INFO L430 AbstractCegarLoop]: === Iteration 5 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:00,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:00,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1241846553, now seen corresponding path program 1 times [2021-06-12 15:23:00,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:00,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765815503] [2021-06-12 15:23:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:00,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:01,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:01,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765815503] [2021-06-12 15:23:01,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765815503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:01,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:01,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-06-12 15:23:01,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150497755] [2021-06-12 15:23:01,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-12 15:23:01,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:01,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-12 15:23:01,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2021-06-12 15:23:01,432 INFO L87 Difference]: Start difference. First operand 4989 states and 12839 transitions. Second operand has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:04,050 INFO L93 Difference]: Finished difference Result 13935 states and 36253 transitions. [2021-06-12 15:23:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-12 15:23:04,050 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 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 108 [2021-06-12 15:23:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:04,066 INFO L225 Difference]: With dead ends: 13935 [2021-06-12 15:23:04,066 INFO L226 Difference]: Without dead ends: 13935 [2021-06-12 15:23:04,067 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 930 ImplicationChecksByTransitivity, 1964.3ms TimeCoverageRelationStatistics Valid=718, Invalid=3572, Unknown=0, NotChecked=0, Total=4290 [2021-06-12 15:23:04,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13935 states. [2021-06-12 15:23:04,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13935 to 9050. [2021-06-12 15:23:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9050 states, 9048 states have (on average 2.6054376657824934) internal successors, (23574), 9049 states have internal predecessors, (23574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9050 states to 9050 states and 23574 transitions. [2021-06-12 15:23:04,196 INFO L78 Accepts]: Start accepts. Automaton has 9050 states and 23574 transitions. Word has length 108 [2021-06-12 15:23:04,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:04,196 INFO L482 AbstractCegarLoop]: Abstraction has 9050 states and 23574 transitions. [2021-06-12 15:23:04,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.5) internal successors, (108), 24 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:04,197 INFO L276 IsEmpty]: Start isEmpty. Operand 9050 states and 23574 transitions. [2021-06-12 15:23:04,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-06-12 15:23:04,202 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:04,202 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:04,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-12 15:23:04,202 INFO L430 AbstractCegarLoop]: === Iteration 6 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:04,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1436479409, now seen corresponding path program 2 times [2021-06-12 15:23:04,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:04,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366104125] [2021-06-12 15:23:04,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:04,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:04,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:04,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366104125] [2021-06-12 15:23:04,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366104125] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:04,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:04,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-06-12 15:23:04,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985262041] [2021-06-12 15:23:04,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-12 15:23:04,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:04,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-12 15:23:04,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:23:04,815 INFO L87 Difference]: Start difference. First operand 9050 states and 23574 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:06,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:06,930 INFO L93 Difference]: Finished difference Result 18155 states and 47544 transitions. [2021-06-12 15:23:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-12 15:23:06,931 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 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 108 [2021-06-12 15:23:06,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:06,953 INFO L225 Difference]: With dead ends: 18155 [2021-06-12 15:23:06,953 INFO L226 Difference]: Without dead ends: 18155 [2021-06-12 15:23:06,953 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 1594.0ms TimeCoverageRelationStatistics Valid=399, Invalid=2463, Unknown=0, NotChecked=0, Total=2862 [2021-06-12 15:23:06,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18155 states. [2021-06-12 15:23:07,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18155 to 10423. [2021-06-12 15:23:07,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10423 states, 10421 states have (on average 2.6332405719220806) internal successors, (27441), 10422 states have internal predecessors, (27441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10423 states to 10423 states and 27441 transitions. [2021-06-12 15:23:07,149 INFO L78 Accepts]: Start accepts. Automaton has 10423 states and 27441 transitions. Word has length 108 [2021-06-12 15:23:07,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:07,150 INFO L482 AbstractCegarLoop]: Abstraction has 10423 states and 27441 transitions. [2021-06-12 15:23:07,150 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:07,150 INFO L276 IsEmpty]: Start isEmpty. Operand 10423 states and 27441 transitions. [2021-06-12 15:23:07,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-06-12 15:23:07,158 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:07,158 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:07,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-12 15:23:07,158 INFO L430 AbstractCegarLoop]: === Iteration 7 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:07,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1171129703, now seen corresponding path program 3 times [2021-06-12 15:23:07,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:07,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445543557] [2021-06-12 15:23:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:07,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:07,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445543557] [2021-06-12 15:23:07,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445543557] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:07,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:07,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-06-12 15:23:07,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898150493] [2021-06-12 15:23:07,745 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-12 15:23:07,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:07,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-12 15:23:07,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2021-06-12 15:23:07,745 INFO L87 Difference]: Start difference. First operand 10423 states and 27441 transitions. Second operand has 27 states, 27 states have (on average 4.0) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:09,950 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-06-12 15:23:10,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:10,533 INFO L93 Difference]: Finished difference Result 23793 states and 61875 transitions. [2021-06-12 15:23:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-12 15:23:10,533 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.0) internal successors, (108), 27 states have internal predecessors, (108), 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 108 [2021-06-12 15:23:10,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:10,558 INFO L225 Difference]: With dead ends: 23793 [2021-06-12 15:23:10,559 INFO L226 Difference]: Without dead ends: 23793 [2021-06-12 15:23:10,559 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1987.7ms TimeCoverageRelationStatistics Valid=509, Invalid=3651, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 15:23:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23793 states. [2021-06-12 15:23:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23793 to 10481. [2021-06-12 15:23:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10481 states, 10479 states have (on average 2.6297356617997902) internal successors, (27557), 10480 states have internal predecessors, (27557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10481 states to 10481 states and 27557 transitions. [2021-06-12 15:23:10,749 INFO L78 Accepts]: Start accepts. Automaton has 10481 states and 27557 transitions. Word has length 108 [2021-06-12 15:23:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:10,749 INFO L482 AbstractCegarLoop]: Abstraction has 10481 states and 27557 transitions. [2021-06-12 15:23:10,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.0) internal successors, (108), 27 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10481 states and 27557 transitions. [2021-06-12 15:23:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-06-12 15:23:10,757 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:10,757 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:10,757 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-12 15:23:10,757 INFO L430 AbstractCegarLoop]: === Iteration 8 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:10,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:10,758 INFO L82 PathProgramCache]: Analyzing trace with hash -131145905, now seen corresponding path program 4 times [2021-06-12 15:23:10,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:10,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365174798] [2021-06-12 15:23:10,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 15:23:11,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 15:23:11,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 15:23:11,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365174798] [2021-06-12 15:23:11,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365174798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 15:23:11,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 15:23:11,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-06-12 15:23:11,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779227384] [2021-06-12 15:23:11,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-12 15:23:11,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 15:23:11,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-12 15:23:11,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2021-06-12 15:23:11,350 INFO L87 Difference]: Start difference. First operand 10481 states and 27557 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 15:23:15,032 INFO L93 Difference]: Finished difference Result 21999 states and 57882 transitions. [2021-06-12 15:23:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-12 15:23:15,038 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 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 108 [2021-06-12 15:23:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 15:23:15,058 INFO L225 Difference]: With dead ends: 21999 [2021-06-12 15:23:15,058 INFO L226 Difference]: Without dead ends: 21999 [2021-06-12 15:23:15,059 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1298 ImplicationChecksByTransitivity, 2973.7ms TimeCoverageRelationStatistics Valid=812, Invalid=4738, Unknown=0, NotChecked=0, Total=5550 [2021-06-12 15:23:15,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21999 states. [2021-06-12 15:23:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21999 to 8939. [2021-06-12 15:23:15,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8939 states, 8937 states have (on average 2.605012867852747) internal successors, (23281), 8938 states have internal predecessors, (23281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:15,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8939 states to 8939 states and 23281 transitions. [2021-06-12 15:23:15,224 INFO L78 Accepts]: Start accepts. Automaton has 8939 states and 23281 transitions. Word has length 108 [2021-06-12 15:23:15,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 15:23:15,225 INFO L482 AbstractCegarLoop]: Abstraction has 8939 states and 23281 transitions. [2021-06-12 15:23:15,225 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:15,225 INFO L276 IsEmpty]: Start isEmpty. Operand 8939 states and 23281 transitions. [2021-06-12 15:23:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-06-12 15:23:15,232 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 15:23:15,232 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 15:23:15,232 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-12 15:23:15,232 INFO L430 AbstractCegarLoop]: === Iteration 9 === [t2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 15:23:15,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 15:23:15,232 INFO L82 PathProgramCache]: Analyzing trace with hash 16614947, now seen corresponding path program 1 times [2021-06-12 15:23:15,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 15:23:15,233 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883210692] [2021-06-12 15:23:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 15:23:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-12 15:23:15,251 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-12 15:23:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-12 15:23:15,266 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-12 15:23:15,292 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-12 15:23:15,292 INFO L573 BasicCegarLoop]: Counterexample might be feasible [2021-06-12 15:23:15,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-12 15:23:15,293 INFO L301 ceAbstractionStarter]: Result for error location t2Thread1of1ForFork1 was UNSAFE (3/5) [2021-06-12 15:23:15,294 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:23:15,295 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:23:15,295 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:23:15,295 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:23:15,295 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:23:15,295 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:23:15,295 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:23:15,295 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:23:15,295 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t1======== [2021-06-12 15:23:15,297 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 156 places, 161 transitions, 344 flow [2021-06-12 15:23:15,471 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:15,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:15,499 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:23:15,499 INFO L301 ceAbstractionStarter]: Result for error location t1 was SAFE (4/5) [2021-06-12 15:23:15,500 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-12 15:23:15,500 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 15:23:15,500 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 15:23:15,500 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 15:23:15,500 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 15:23:15,500 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 15:23:15,500 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 15:23:15,500 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 15:23:15,500 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == t2======== [2021-06-12 15:23:15,501 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 156 places, 161 transitions, 344 flow [2021-06-12 15:23:15,671 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:15,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 9835 states, 9831 states have (on average 2.8606448987895434) internal successors, (28123), 9834 states have internal predecessors, (28123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 15:23:15,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 15:23:15,699 INFO L301 ceAbstractionStarter]: Result for error location t2 was SAFE (5/5) [2021-06-12 15:23:15,699 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 15:23:15,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 03:23:15 BasicIcfg [2021-06-12 15:23:15,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 15:23:15,786 INFO L168 Benchmark]: Toolchain (without parser) took 37116.14 ms. Allocated memory was 186.6 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 148.8 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 800.9 MB. Max. memory is 8.0 GB. [2021-06-12 15:23:15,787 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 167.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 15:23:15,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.47 ms. Allocated memory is still 186.6 MB. Free memory was 148.6 MB in the beginning and 121.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2021-06-12 15:23:15,787 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.70 ms. Allocated memory is still 186.6 MB. Free memory was 120.9 MB in the beginning and 118.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 15:23:15,787 INFO L168 Benchmark]: Boogie Preprocessor took 17.82 ms. Allocated memory is still 186.6 MB. Free memory was 118.4 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 15:23:15,787 INFO L168 Benchmark]: RCFGBuilder took 405.51 ms. Allocated memory is still 186.6 MB. Free memory was 116.7 MB in the beginning and 139.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2021-06-12 15:23:15,787 INFO L168 Benchmark]: TraceAbstraction took 36109.59 ms. Allocated memory was 186.6 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 138.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 789.7 MB. Max. memory is 8.0 GB. [2021-06-12 15:23:15,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 186.6 MB. Free memory is still 167.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 547.47 ms. Allocated memory is still 186.6 MB. Free memory was 148.6 MB in the beginning and 121.3 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 30.70 ms. Allocated memory is still 186.6 MB. Free memory was 120.9 MB in the beginning and 118.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 17.82 ms. Allocated memory is still 186.6 MB. Free memory was 118.4 MB in the beginning and 116.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 405.51 ms. Allocated memory is still 186.6 MB. Free memory was 116.7 MB in the beginning and 139.0 MB in the end (delta: -22.3 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 36109.59 ms. Allocated memory was 186.6 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 138.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 789.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 941]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - CounterExampleResult [Line: 941]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L935] 0 static int top=0; VAL [top=0] [L936] 0 static unsigned int arr[(5)]; VAL [arr={13:0}, top=0] [L937] 0 pthread_mutex_t m; VAL [arr={13:0}, m={14:0}, top=0] [L938] 0 _Bool flag=(0); VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L1021] 0 pthread_t id1, id2; VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L1006] 2 int i; VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L1007] 2 i=0 VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L1007] COND TRUE 2 i<(5) VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L990] 1 int i; VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L991] 1 unsigned int tmp; VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L992] 1 i=0 VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L992] COND TRUE 1 i<(5) VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L995] 1 tmp = __VERIFIER_nondet_uint() VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L23] COND FALSE 1 !(!cond) VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L962] COND FALSE 1 !(top==(5)) VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L954] 1 return top; VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L969] 1 stack[get_top()] = x VAL [arr={13:0}, flag=0, m={14:0}, top=0] [L946] 1 top++ VAL [arr={13:0}, flag=0, m={14:0}, top=1] [L972] 1 return 0; VAL [arr={13:0}, flag=0, m={14:0}, top=1] [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) VAL [arr={13:0}, flag=0, m={14:0}, top=1] [L999] 1 flag=(1) VAL [arr={13:0}, flag=1, m={14:0}, top=1] [L1010] COND TRUE 2 \read(flag) VAL [arr={13:0}, flag=1, m={14:0}, top=1] [L954] 2 return top; VAL [arr={13:0}, flag=1, m={14:0}, top=1] [L976] COND FALSE 2 !(get_top()==0) VAL [arr={13:0}, flag=1, m={14:0}, top=1] [L950] 2 top-- VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L954] 2 return top; VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L984] EXPR 2 stack[get_top()] VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L984] 2 return stack[get_top()]; VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L1007] 2 i++ VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L1007] COND TRUE 2 i<(5) VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L1010] COND TRUE 2 \read(flag) VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L954] 2 return top; VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L976] COND TRUE 2 get_top()==0 VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L979] 2 return (-2); VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L1012] COND TRUE 2 !(pop(arr)!=(-2)) VAL [arr={13:0}, flag=1, m={14:0}, top=0] [L941] 2 reach_error() VAL [arr={13:0}, flag=1, m={14:0}, top=0] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t1Thread1of1ForFork0 with 1 thread instances CFG has 5 procedures, 248 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20145.7ms, OverallIterations: 20, TraceHistogramMax: 6, EmptinessCheckTime: 334.0ms, AutomataDifference: 3706.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 336.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4073 SDtfs, 9910 SDslu, 19619 SDs, 0 SdLazy, 1444 SolverSat, 141 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 717.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3641 GetRequests, 3350 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 1578.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18186occurred in iteration=13, InterpolantAutomatonStates: 241, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 4255.0ms AutomataMinimizationTime, 20 MinimizatonAttempts, 41111 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 411.3ms SsaConstructionTime, 1230.3ms SatisfiabilityAnalysisTime, 5531.1ms InterpolantComputationTime, 6974 NumberOfCodeBlocks, 6767 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 6938 ConstructedInterpolants, 0 QuantifiedInterpolants, 18921 SizeOfPredicates, 126 NumberOfNonLiveVariables, 6379 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 36 InterpolantComputations, 6 PerfectInterpolantSequences, 2075/6852 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 248 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 233.7ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 38.4ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 194.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9835occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t2Thread1of1ForFork1 with 1 thread instances CFG has 5 procedures, 248 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15143.2ms, OverallIterations: 9, TraceHistogramMax: 2, EmptinessCheckTime: 58.1ms, AutomataDifference: 11484.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 174.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2589 SDtfs, 6106 SDslu, 28238 SDs, 0 SdLazy, 8525 SolverSat, 135 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3227.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 287 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3750 ImplicationChecksByTransitivity, 8552.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10481occurred in iteration=7, InterpolantAutomatonStates: 204, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1012.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 41555 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.0ms SsaConstructionTime, 95.8ms SatisfiabilityAnalysisTime, 2224.2ms InterpolantComputationTime, 901 NumberOfCodeBlocks, 901 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 761 ConstructedInterpolants, 0 QuantifiedInterpolants, 8369 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t1 with 1 thread instances CFG has 5 procedures, 248 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 204.1ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 27.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 176.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9835occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: t2 with 1 thread instances CFG has 5 procedures, 248 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 198.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 27.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 171.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9835occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...