/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 06:08:45,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 06:08:45,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 06:08:45,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 06:08:45,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 06:08:45,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 06:08:45,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 06:08:45,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 06:08:45,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 06:08:45,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 06:08:45,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 06:08:45,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 06:08:45,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 06:08:45,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 06:08:45,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 06:08:45,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 06:08:45,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 06:08:45,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 06:08:45,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 06:08:45,719 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 06:08:45,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 06:08:45,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 06:08:45,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 06:08:45,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 06:08:45,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 06:08:45,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 06:08:45,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 06:08:45,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 06:08:45,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 06:08:45,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 06:08:45,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 06:08:45,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 06:08:45,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 06:08:45,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 06:08:45,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 06:08:45,773 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 06:08:45,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 06:08:45,774 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 06:08:45,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 06:08:45,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 06:08:45,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 06:08:45,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 06:08:45,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 06:08:45,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 06:08:45,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 06:08:45,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 06:08:45,837 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 06:08:45,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 06:08:45,838 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 06:08:45,838 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 06:08:45,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 06:08:45,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 06:08:45,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 06:08:45,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 06:08:45,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 06:08:45,841 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 06:08:45,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 06:08:45,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 06:08:45,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 06:08:45,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 06:08:45,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 06:08:45,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 06:08:45,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 06:08:45,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:08:45,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 06:08:45,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 06:08:45,843 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 06:08:45,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 06:08:45,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 06:08:45,844 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 06:08:45,844 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 06:08:45,844 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 06:08:46,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 06:08:46,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 06:08:46,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 06:08:46,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 06:08:46,334 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 06:08:46,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:08:46,421 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a08717465/12ad3135c4bf4e73bc48575ce41dbfe1/FLAG4ffdba10f [2020-10-27 06:08:47,212 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 06:08:47,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:08:47,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a08717465/12ad3135c4bf4e73bc48575ce41dbfe1/FLAG4ffdba10f [2020-10-27 06:08:47,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a08717465/12ad3135c4bf4e73bc48575ce41dbfe1 [2020-10-27 06:08:47,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 06:08:47,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 06:08:47,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 06:08:47,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 06:08:47,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 06:08:47,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:47" (1/1) ... [2020-10-27 06:08:47,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35d97b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:47, skipping insertion in model container [2020-10-27 06:08:47,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:08:47" (1/1) ... [2020-10-27 06:08:47,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 06:08:47,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 06:08:48,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:08:48,310 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 06:08:48,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 06:08:48,623 INFO L208 MainTranslator]: Completed translation [2020-10-27 06:08:48,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48 WrapperNode [2020-10-27 06:08:48,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 06:08:48,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 06:08:48,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 06:08:48,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 06:08:48,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... [2020-10-27 06:08:48,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... [2020-10-27 06:08:48,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... [2020-10-27 06:08:48,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... [2020-10-27 06:08:48,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... [2020-10-27 06:08:48,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... [2020-10-27 06:08:48,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... [2020-10-27 06:08:48,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 06:08:48,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 06:08:48,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 06:08:48,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 06:08:48,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 06:08:48,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 06:08:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 06:08:48,907 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 06:08:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 06:08:48,908 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 06:08:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 06:08:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 06:08:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 06:08:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 06:08:48,909 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 06:08:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 06:08:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 06:08:48,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 06:08:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 06:08:48,911 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 06:08:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 06:08:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 06:08:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 06:08:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 06:08:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 06:08:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 06:08:48,912 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 06:08:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 06:08:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 06:08:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 06:08:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 06:08:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 06:08:48,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 06:08:48,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 06:08:51,766 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 06:08:51,766 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 06:08:51,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:51 BoogieIcfgContainer [2020-10-27 06:08:51,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 06:08:51,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 06:08:51,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 06:08:51,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 06:08:51,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:08:47" (1/3) ... [2020-10-27 06:08:51,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9f2531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:08:51, skipping insertion in model container [2020-10-27 06:08:51,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:08:48" (2/3) ... [2020-10-27 06:08:51,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9f2531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:08:51, skipping insertion in model container [2020-10-27 06:08:51,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:08:51" (3/3) ... [2020-10-27 06:08:51,779 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 06:08:51,791 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 06:08:51,796 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 06:08:51,810 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 06:08:51,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 06:08:51,842 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 06:08:51,842 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 06:08:51,842 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 06:08:51,842 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 06:08:51,843 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 06:08:51,843 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 06:08:51,843 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 06:08:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states. [2020-10-27 06:08:51,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-27 06:08:51,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:08:51,910 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:08:51,911 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:08:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:08:51,918 INFO L82 PathProgramCache]: Analyzing trace with hash 48007832, now seen corresponding path program 1 times [2020-10-27 06:08:51,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:08:51,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74080787] [2020-10-27 06:08:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:08:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:53,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:55,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:57,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:57,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 06:08:57,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 06:08:57,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 06:08:57,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:08:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 06:08:57,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 06:08:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 06:08:59,176 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:08:59,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:08:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:08:59,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:08:59,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:08:59,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:08:59,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:08:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 06:08:59,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:08:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:08:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:08:59,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:08:59,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:08:59,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:08:59,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74080787] [2020-10-27 06:08:59,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:08:59,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 06:08:59,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296926800] [2020-10-27 06:08:59,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 06:08:59,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:08:59,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 06:08:59,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 06:08:59,421 INFO L87 Difference]: Start difference. First operand 779 states. Second operand 4 states. [2020-10-27 06:09:00,903 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 414 [2020-10-27 06:09:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:07,478 INFO L93 Difference]: Finished difference Result 1213 states and 2154 transitions. [2020-10-27 06:09:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 06:09:07,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2020-10-27 06:09:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:07,520 INFO L225 Difference]: With dead ends: 1213 [2020-10-27 06:09:07,520 INFO L226 Difference]: Without dead ends: 978 [2020-10-27 06:09:07,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:07,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2020-10-27 06:09:07,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2020-10-27 06:09:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-10-27 06:09:07,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1687 transitions. [2020-10-27 06:09:07,722 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1687 transitions. Word has length 218 [2020-10-27 06:09:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:07,728 INFO L481 AbstractCegarLoop]: Abstraction has 975 states and 1687 transitions. [2020-10-27 06:09:07,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 06:09:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1687 transitions. [2020-10-27 06:09:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-27 06:09:07,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:07,745 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:07,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 06:09:07,746 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:07,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:07,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1152014067, now seen corresponding path program 1 times [2020-10-27 06:09:07,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:07,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040273258] [2020-10-27 06:09:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:08,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:09,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:10,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:10,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:13,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:13,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 06:09:13,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:09:13,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5129 [2020-10-27 06:09:13,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:13,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:13,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-27 06:09:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 06:09:14,506 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:09:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:14,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:14,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:14,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:14,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:14,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 06:09:14,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:14,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:14,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040273258] [2020-10-27 06:09:14,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:14,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:14,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22030379] [2020-10-27 06:09:14,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:14,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:14,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:14,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:14,820 INFO L87 Difference]: Start difference. First operand 975 states and 1687 transitions. Second operand 5 states. [2020-10-27 06:09:23,092 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:09:23,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:23,320 INFO L93 Difference]: Finished difference Result 2871 states and 4970 transitions. [2020-10-27 06:09:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:23,322 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-27 06:09:23,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:23,335 INFO L225 Difference]: With dead ends: 2871 [2020-10-27 06:09:23,335 INFO L226 Difference]: Without dead ends: 1917 [2020-10-27 06:09:23,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:23,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-27 06:09:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1914. [2020-10-27 06:09:23,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2020-10-27 06:09:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 3300 transitions. [2020-10-27 06:09:23,447 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 3300 transitions. Word has length 222 [2020-10-27 06:09:23,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:23,448 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 3300 transitions. [2020-10-27 06:09:23,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 3300 transitions. [2020-10-27 06:09:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 06:09:23,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:23,457 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:23,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 06:09:23,457 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:23,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:23,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1644447696, now seen corresponding path program 1 times [2020-10-27 06:09:23,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:23,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434732389] [2020-10-27 06:09:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:23,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:28,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:28,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 06:09:28,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:09:28,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 06:09:28,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:28,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:28,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 06:09:28,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:30,076 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:09:30,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:30,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:30,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:30,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:30,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:30,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:09:30,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:30,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:30,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:30,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:30,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434732389] [2020-10-27 06:09:30,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:30,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:30,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010672512] [2020-10-27 06:09:30,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:30,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:30,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:30,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:30,306 INFO L87 Difference]: Start difference. First operand 1914 states and 3300 transitions. Second operand 5 states. [2020-10-27 06:09:38,346 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:09:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:38,566 INFO L93 Difference]: Finished difference Result 5564 states and 9589 transitions. [2020-10-27 06:09:38,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:38,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 06:09:38,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:38,589 INFO L225 Difference]: With dead ends: 5564 [2020-10-27 06:09:38,589 INFO L226 Difference]: Without dead ends: 3727 [2020-10-27 06:09:38,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3727 states. [2020-10-27 06:09:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3727 to 3724. [2020-10-27 06:09:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3724 states. [2020-10-27 06:09:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 6392 transitions. [2020-10-27 06:09:38,778 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 6392 transitions. Word has length 223 [2020-10-27 06:09:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:38,778 INFO L481 AbstractCegarLoop]: Abstraction has 3724 states and 6392 transitions. [2020-10-27 06:09:38,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 6392 transitions. [2020-10-27 06:09:38,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-27 06:09:38,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:38,790 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:38,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 06:09:38,791 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:38,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:38,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1228665914, now seen corresponding path program 1 times [2020-10-27 06:09:38,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:38,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151281737] [2020-10-27 06:09:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:39,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:39,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:40,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:42,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:43,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:43,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-27 06:09:43,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:09:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5083 [2020-10-27 06:09:43,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:43,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-27 06:09:43,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:45,472 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:09:45,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:09:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:45,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:45,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:45,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:09:45,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:09:45,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 06:09:45,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:09:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:09:45,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:09:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:09:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:09:45,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151281737] [2020-10-27 06:09:45,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:09:45,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:09:45,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143992056] [2020-10-27 06:09:45,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:09:45,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:09:45,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:09:45,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:09:45,731 INFO L87 Difference]: Start difference. First operand 3724 states and 6392 transitions. Second operand 5 states. [2020-10-27 06:09:54,048 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:09:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:09:54,261 INFO L93 Difference]: Finished difference Result 11079 states and 19022 transitions. [2020-10-27 06:09:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:09:54,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 223 [2020-10-27 06:09:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:09:54,302 INFO L225 Difference]: With dead ends: 11079 [2020-10-27 06:09:54,303 INFO L226 Difference]: Without dead ends: 7379 [2020-10-27 06:09:54,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:09:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7379 states. [2020-10-27 06:09:54,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7379 to 7376. [2020-10-27 06:09:54,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7376 states. [2020-10-27 06:09:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7376 states to 7376 states and 12611 transitions. [2020-10-27 06:09:54,690 INFO L78 Accepts]: Start accepts. Automaton has 7376 states and 12611 transitions. Word has length 223 [2020-10-27 06:09:54,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:09:54,691 INFO L481 AbstractCegarLoop]: Abstraction has 7376 states and 12611 transitions. [2020-10-27 06:09:54,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:09:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 7376 states and 12611 transitions. [2020-10-27 06:09:54,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 06:09:54,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:09:54,711 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:09:54,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 06:09:54,711 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:09:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:09:54,712 INFO L82 PathProgramCache]: Analyzing trace with hash 398959885, now seen corresponding path program 1 times [2020-10-27 06:09:54,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:09:54,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295255443] [2020-10-27 06:09:54,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:09:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:09:54,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:55,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:56,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:58,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:58,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:59,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:09:59,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:09:59,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 06:09:59,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:09:59,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 06:09:59,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:09:59,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:09:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:09:59,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:09:59,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:01,144 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:10:01,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:01,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:01,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:01,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:01,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:01,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:10:01,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:01,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:01,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295255443] [2020-10-27 06:10:01,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:01,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:01,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902530240] [2020-10-27 06:10:01,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:01,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:01,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:01,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:01,375 INFO L87 Difference]: Start difference. First operand 7376 states and 12611 transitions. Second operand 5 states. [2020-10-27 06:10:09,620 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:10:09,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:09,868 INFO L93 Difference]: Finished difference Result 21470 states and 36681 transitions. [2020-10-27 06:10:09,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:09,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-27 06:10:09,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:09,937 INFO L225 Difference]: With dead ends: 21470 [2020-10-27 06:10:09,937 INFO L226 Difference]: Without dead ends: 14431 [2020-10-27 06:10:09,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14431 states. [2020-10-27 06:10:10,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14431 to 14428. [2020-10-27 06:10:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14428 states. [2020-10-27 06:10:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14428 states to 14428 states and 24541 transitions. [2020-10-27 06:10:10,684 INFO L78 Accepts]: Start accepts. Automaton has 14428 states and 24541 transitions. Word has length 224 [2020-10-27 06:10:10,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:10,684 INFO L481 AbstractCegarLoop]: Abstraction has 14428 states and 24541 transitions. [2020-10-27 06:10:10,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:10,685 INFO L276 IsEmpty]: Start isEmpty. Operand 14428 states and 24541 transitions. [2020-10-27 06:10:10,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-27 06:10:10,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:10,721 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:10,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 06:10:10,721 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:10,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:10,722 INFO L82 PathProgramCache]: Analyzing trace with hash 257931764, now seen corresponding path program 1 times [2020-10-27 06:10:10,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:10,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574408855] [2020-10-27 06:10:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:10,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:11,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:13,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:13,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:15,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:15,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-27 06:10:15,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:10:15,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-27 06:10:15,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:15,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 06:10:15,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:17,252 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:10:17,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:17,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:17,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:17,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:17,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:17,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:17,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 06:10:17,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:17,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:17,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:17,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:17,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574408855] [2020-10-27 06:10:17,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:17,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:17,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079880913] [2020-10-27 06:10:17,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:17,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:17,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:17,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:17,403 INFO L87 Difference]: Start difference. First operand 14428 states and 24541 transitions. Second operand 5 states. [2020-10-27 06:10:26,114 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:10:26,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:26,457 INFO L93 Difference]: Finished difference Result 42969 states and 73079 transitions. [2020-10-27 06:10:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:10:26,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-27 06:10:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:26,537 INFO L225 Difference]: With dead ends: 42969 [2020-10-27 06:10:26,537 INFO L226 Difference]: Without dead ends: 28561 [2020-10-27 06:10:26,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:10:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28561 states. [2020-10-27 06:10:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28561 to 28558. [2020-10-27 06:10:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28558 states. [2020-10-27 06:10:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28558 states to 28558 states and 48366 transitions. [2020-10-27 06:10:28,040 INFO L78 Accepts]: Start accepts. Automaton has 28558 states and 48366 transitions. Word has length 224 [2020-10-27 06:10:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:28,041 INFO L481 AbstractCegarLoop]: Abstraction has 28558 states and 48366 transitions. [2020-10-27 06:10:28,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:10:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 28558 states and 48366 transitions. [2020-10-27 06:10:28,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:10:28,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:28,108 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:28,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 06:10:28,108 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash -5372348, now seen corresponding path program 1 times [2020-10-27 06:10:28,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:28,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275217082] [2020-10-27 06:10:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:28,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:30,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:33,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:33,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:10:33,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 06:10:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-27 06:10:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 06:10:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 06:10:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-27 06:10:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:34,667 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:10:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:34,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:34,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:34,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:34,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:34,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 06:10:34,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 06:10:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:34,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 06:10:34,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:34,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275217082] [2020-10-27 06:10:34,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:34,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 06:10:34,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98145891] [2020-10-27 06:10:34,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 06:10:34,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:34,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 06:10:34,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 06:10:34,808 INFO L87 Difference]: Start difference. First operand 28558 states and 48366 transitions. Second operand 8 states. [2020-10-27 06:10:36,070 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:10:44,587 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification that was a NOOP. DAG size: 420 [2020-10-27 06:10:46,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:10:46,309 INFO L93 Difference]: Finished difference Result 57596 states and 97034 transitions. [2020-10-27 06:10:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 06:10:46,310 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-27 06:10:46,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:10:46,424 INFO L225 Difference]: With dead ends: 57596 [2020-10-27 06:10:46,425 INFO L226 Difference]: Without dead ends: 45081 [2020-10-27 06:10:46,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 06:10:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45081 states. [2020-10-27 06:10:48,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45081 to 28782. [2020-10-27 06:10:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28782 states. [2020-10-27 06:10:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28782 states to 28782 states and 48574 transitions. [2020-10-27 06:10:48,128 INFO L78 Accepts]: Start accepts. Automaton has 28782 states and 48574 transitions. Word has length 225 [2020-10-27 06:10:48,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:10:48,129 INFO L481 AbstractCegarLoop]: Abstraction has 28782 states and 48574 transitions. [2020-10-27 06:10:48,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 06:10:48,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28782 states and 48574 transitions. [2020-10-27 06:10:48,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:10:48,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:10:48,181 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:10:48,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 06:10:48,181 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:10:48,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:10:48,182 INFO L82 PathProgramCache]: Analyzing trace with hash -539510310, now seen corresponding path program 1 times [2020-10-27 06:10:48,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:10:48,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387863792] [2020-10-27 06:10:48,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:10:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:50,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:50,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:50,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:53,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:53,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:10:53,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 06:10:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 06:10:53,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:10:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:10:53,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 06:10:53,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:54,488 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:10:54,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:10:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:10:54,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:10:54,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:10:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:10:54,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:10:54,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 06:10:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:10:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:10:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:10:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:10:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:10:54,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:10:54,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387863792] [2020-10-27 06:10:54,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:10:54,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:10:54,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114050125] [2020-10-27 06:10:54,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:10:54,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:10:54,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:10:54,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:10:54,709 INFO L87 Difference]: Start difference. First operand 28782 states and 48574 transitions. Second operand 5 states. [2020-10-27 06:11:04,636 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:11:05,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:05,333 INFO L93 Difference]: Finished difference Result 83428 states and 140618 transitions. [2020-10-27 06:11:05,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:11:05,333 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-27 06:11:05,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:05,484 INFO L225 Difference]: With dead ends: 83428 [2020-10-27 06:11:05,484 INFO L226 Difference]: Without dead ends: 56145 [2020-10-27 06:11:05,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56145 states. [2020-10-27 06:11:09,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56145 to 56142. [2020-10-27 06:11:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56142 states. [2020-10-27 06:11:09,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56142 states to 56142 states and 94230 transitions. [2020-10-27 06:11:09,338 INFO L78 Accepts]: Start accepts. Automaton has 56142 states and 94230 transitions. Word has length 225 [2020-10-27 06:11:09,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:09,339 INFO L481 AbstractCegarLoop]: Abstraction has 56142 states and 94230 transitions. [2020-10-27 06:11:09,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:09,339 INFO L276 IsEmpty]: Start isEmpty. Operand 56142 states and 94230 transitions. [2020-10-27 06:11:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-27 06:11:09,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:09,412 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:09,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 06:11:09,412 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:09,413 INFO L82 PathProgramCache]: Analyzing trace with hash 964996683, now seen corresponding path program 1 times [2020-10-27 06:11:09,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:09,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257804552] [2020-10-27 06:11:09,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:09,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:10,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:10,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:14,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-27 06:11:14,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 06:11:14,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 06:11:14,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:14,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-27 06:11:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:15,883 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:11:15,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:15,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:15,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:15,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:15,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 06:11:15,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:15,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:15,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:16,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:11:16,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257804552] [2020-10-27 06:11:16,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:16,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:16,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389137501] [2020-10-27 06:11:16,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:16,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:16,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:16,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:16,105 INFO L87 Difference]: Start difference. First operand 56142 states and 94230 transitions. Second operand 5 states. [2020-10-27 06:11:29,732 WARN L193 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:11:31,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:11:31,405 INFO L93 Difference]: Finished difference Result 165940 states and 278438 transitions. [2020-10-27 06:11:31,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:11:31,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225 [2020-10-27 06:11:31,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:11:31,627 INFO L225 Difference]: With dead ends: 165940 [2020-10-27 06:11:31,627 INFO L226 Difference]: Without dead ends: 111265 [2020-10-27 06:11:31,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:11:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111265 states. [2020-10-27 06:11:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111265 to 111262. [2020-10-27 06:11:39,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111262 states. [2020-10-27 06:11:39,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111262 states to 111262 states and 186054 transitions. [2020-10-27 06:11:39,681 INFO L78 Accepts]: Start accepts. Automaton has 111262 states and 186054 transitions. Word has length 225 [2020-10-27 06:11:39,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 06:11:39,682 INFO L481 AbstractCegarLoop]: Abstraction has 111262 states and 186054 transitions. [2020-10-27 06:11:39,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 06:11:39,682 INFO L276 IsEmpty]: Start isEmpty. Operand 111262 states and 186054 transitions. [2020-10-27 06:11:39,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-27 06:11:39,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 06:11:39,859 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 06:11:39,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 06:11:39,860 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 06:11:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 06:11:39,861 INFO L82 PathProgramCache]: Analyzing trace with hash -195818526, now seen corresponding path program 1 times [2020-10-27 06:11:39,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 06:11:39,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48696856] [2020-10-27 06:11:39,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 06:11:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:40,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:40,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:41,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:42,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:45,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 06:11:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 06:11:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 06:11:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 06:11:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 06:11:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 06:11:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:46,343 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 412 [2020-10-27 06:11:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 06:11:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 06:11:46,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 06:11:46,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 06:11:46,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 06:11:46,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 06:11:46,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 06:11:46,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 06:11:46,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 06:11:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 06:11:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 06:11:46,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 06:11:46,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 06:11:46,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48696856] [2020-10-27 06:11:46,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 06:11:46,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 06:11:46,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714832525] [2020-10-27 06:11:46,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 06:11:46,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 06:11:46,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 06:11:46,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 06:11:46,491 INFO L87 Difference]: Start difference. First operand 111262 states and 186054 transitions. Second operand 5 states. [2020-10-27 06:12:06,136 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification that was a NOOP. DAG size: 418 [2020-10-27 06:12:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 06:12:10,564 INFO L93 Difference]: Finished difference Result 322948 states and 539474 transitions. [2020-10-27 06:12:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 06:12:10,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 226 [2020-10-27 06:12:10,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 06:12:11,226 INFO L225 Difference]: With dead ends: 322948 [2020-10-27 06:12:11,227 INFO L226 Difference]: Without dead ends: 218369 [2020-10-27 06:12:11,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 06:12:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218369 states.