/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:24:35,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:24:35,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:24:35,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:24:35,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:24:35,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:24:35,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:24:35,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:24:35,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:24:35,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:24:35,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:24:35,150 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:24:35,150 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:24:35,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:24:35,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:24:35,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:24:35,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:24:35,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:24:35,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:24:35,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:24:35,161 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:24:35,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:24:35,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:24:35,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:24:35,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:24:35,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:24:35,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:24:35,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:24:35,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:24:35,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:24:35,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:24:35,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:24:35,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:24:35,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:24:35,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:24:35,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:24:35,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:24:35,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:24:35,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:24:35,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:24:35,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:24:35,178 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 [2020-09-21 11:24:35,206 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:24:35,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:24:35,207 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:24:35,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:24:35,208 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:24:35,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:24:35,208 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:24:35,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:24:35,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:24:35,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:24:35,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:24:35,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:24:35,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:24:35,210 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:24:35,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:24:35,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:24:35,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:24:35,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:24:35,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:24:35,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:24:35,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:24:35,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:24:35,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:24:35,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:24:35,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:24:35,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:24:35,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:24:35,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:24:35,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:24:35,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:24:35,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:24:35,739 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:24:35,746 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:24:35,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:24:35,751 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:24:35,752 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-21 11:24:35,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9726d5e7/f0d5d1e069414d67b230f5beec28037f/FLAGd08c50b87 [2020-09-21 11:24:36,435 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:24:36,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-21 11:24:36,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9726d5e7/f0d5d1e069414d67b230f5beec28037f/FLAGd08c50b87 [2020-09-21 11:24:36,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c9726d5e7/f0d5d1e069414d67b230f5beec28037f [2020-09-21 11:24:36,793 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:24:36,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:24:36,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:36,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:24:36,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:24:36,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:36" (1/1) ... [2020-09-21 11:24:36,810 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9447a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:36, skipping insertion in model container [2020-09-21 11:24:36,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:24:36" (1/1) ... [2020-09-21 11:24:36,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:24:36,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:24:37,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:37,391 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:24:37,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:24:37,547 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:24:37,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37 WrapperNode [2020-09-21 11:24:37,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:24:37,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:24:37,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:24:37,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:24:37,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (1/1) ... [2020-09-21 11:24:37,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:24:37,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:24:37,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:24:37,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:24:37,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (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 [2020-09-21 11:24:37,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:24:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:24:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-21 11:24:37,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-21 11:24:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-21 11:24:37,716 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-21 11:24:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-21 11:24:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-21 11:24:37,717 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-21 11:24:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-21 11:24:37,719 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:24:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:24:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:24:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-21 11:24:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-21 11:24:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 11:24:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 11:24:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 11:24:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 11:24:37,720 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 11:24:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 11:24:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 11:24:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 11:24:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 11:24:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 11:24:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 11:24:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 11:24:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 11:24:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 11:24:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 11:24:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 11:24:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 11:24:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 11:24:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 11:24:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 11:24:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 11:24:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 11:24:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 11:24:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 11:24:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 11:24:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 11:24:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 11:24:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 11:24:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 11:24:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 11:24:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 11:24:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 11:24:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 11:24:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 11:24:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 11:24:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 11:24:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 11:24:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 11:24:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 11:24:37,726 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 11:24:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 11:24:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 11:24:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 11:24:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 11:24:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 11:24:37,727 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 11:24:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 11:24:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 11:24:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 11:24:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 11:24:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:24:37,728 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 11:24:37,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 11:24:37,730 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 11:24:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 11:24:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 11:24:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 11:24:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 11:24:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 11:24:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 11:24:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 11:24:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 11:24:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 11:24:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 11:24:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 11:24:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 11:24:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 11:24:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 11:24:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 11:24:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 11:24:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 11:24:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 11:24:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 11:24:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 11:24:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 11:24:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 11:24:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 11:24:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 11:24:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 11:24:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 11:24:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 11:24:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 11:24:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-21 11:24:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-21 11:24:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:24:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:24:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-21 11:24:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:24:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-21 11:24:37,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:24:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-21 11:24:37,739 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-21 11:24:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:24:37,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:24:37,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 11:24:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:24:37,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:24:38,113 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-21 11:24:38,387 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:24:38,387 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-21 11:24:38,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:38 BoogieIcfgContainer [2020-09-21 11:24:38,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:24:38,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:24:38,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:24:38,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:24:38,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:24:36" (1/3) ... [2020-09-21 11:24:38,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408cd3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:38, skipping insertion in model container [2020-09-21 11:24:38,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:24:37" (2/3) ... [2020-09-21 11:24:38,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408cd3cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:24:38, skipping insertion in model container [2020-09-21 11:24:38,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:24:38" (3/3) ... [2020-09-21 11:24:38,403 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-21 11:24:38,416 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:24:38,427 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:24:38,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:24:38,483 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:24:38,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:24:38,484 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:24:38,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:24:38,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:24:38,485 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:24:38,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:24:38,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:24:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-21 11:24:38,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 11:24:38,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:38,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:38,525 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:38,533 INFO L82 PathProgramCache]: Analyzing trace with hash 960784814, now seen corresponding path program 1 times [2020-09-21 11:24:38,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:38,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931060920] [2020-09-21 11:24:38,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,724 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,725 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,725 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,726 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 11:24:38,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:24:38,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:38,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,803 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,803 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,803 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,804 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:38,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:38,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:38,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:38,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,822 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,822 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,822 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,823 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:38,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:24:38,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:38,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:24:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,855 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,855 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,855 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:38,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:24:38,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:38,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 11:24:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,890 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,890 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,890 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:38,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:24:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:38,902 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:38,902 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:38,902 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:38,902 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:38,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:38,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:38,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:38,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:24:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:38,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 11:24:38,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931060920] [2020-09-21 11:24:38,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:38,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:24:38,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279256349] [2020-09-21 11:24:38,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:24:38,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:38,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:24:38,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:24:38,972 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 4 states. [2020-09-21 11:24:39,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:39,220 INFO L93 Difference]: Finished difference Result 136 states and 184 transitions. [2020-09-21 11:24:39,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:24:39,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-21 11:24:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:39,237 INFO L225 Difference]: With dead ends: 136 [2020-09-21 11:24:39,237 INFO L226 Difference]: Without dead ends: 58 [2020-09-21 11:24:39,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:24:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-21 11:24:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-09-21 11:24:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-21 11:24:39,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-21 11:24:39,308 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 37 [2020-09-21 11:24:39,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:39,309 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-21 11:24:39,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:24:39,309 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-21 11:24:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-21 11:24:39,312 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:39,312 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:39,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:24:39,313 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:39,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:39,314 INFO L82 PathProgramCache]: Analyzing trace with hash 322036078, now seen corresponding path program 1 times [2020-09-21 11:24:39,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:39,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635382526] [2020-09-21 11:24:39,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,501 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,501 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,501 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,502 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-21 11:24:39,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-21 11:24:39,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:24:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:39,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:24:39,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,582 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,582 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,583 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,584 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:39,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:39,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:39,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:39,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,617 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,617 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:39,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:24:39,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:39,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:39,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:39,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,678 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,678 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,679 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:24:39,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:24:39,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:24:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 11:24:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,734 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,734 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,734 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,735 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:39,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:39,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:24:39,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 11:24:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:39,746 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:39,746 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:39,746 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:39,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:39,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:39,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:39,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:24:39,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:39,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:39,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635382526] [2020-09-21 11:24:39,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:39,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-21 11:24:39,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168227661] [2020-09-21 11:24:39,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-21 11:24:39,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:39,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-21 11:24:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:24:39,759 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 11 states. [2020-09-21 11:24:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:40,304 INFO L93 Difference]: Finished difference Result 119 states and 149 transitions. [2020-09-21 11:24:40,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:24:40,305 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 44 [2020-09-21 11:24:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:40,307 INFO L225 Difference]: With dead ends: 119 [2020-09-21 11:24:40,307 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 11:24:40,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:24:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 11:24:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2020-09-21 11:24:40,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-21 11:24:40,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2020-09-21 11:24:40,328 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 44 [2020-09-21 11:24:40,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:40,328 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2020-09-21 11:24:40,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-21 11:24:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2020-09-21 11:24:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-21 11:24:40,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:40,331 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:40,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:24:40,331 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:40,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1427384127, now seen corresponding path program 1 times [2020-09-21 11:24:40,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:40,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324267732] [2020-09-21 11:24:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,446 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,447 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,447 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,447 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-21 11:24:40,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 11:24:40,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:24:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:40,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:24:40,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,516 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,516 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,517 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,517 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:40,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:40,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:40,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,549 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,549 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,550 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 11:24:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 11:24:40,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 11:24:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,628 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,629 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,629 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,629 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:24:40,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:24:40,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:40,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:24:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-21 11:24:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,696 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,696 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,696 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,697 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:40,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:40,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:40,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:24:40,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:40,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 11:24:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:40,709 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:40,709 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:40,709 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:40,710 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:40,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:40,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:40,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:40,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:24:40,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:40,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:40,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324267732] [2020-09-21 11:24:40,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:40,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:24:40,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447123034] [2020-09-21 11:24:40,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:24:40,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:40,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:24:40,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:24:40,724 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand 12 states. [2020-09-21 11:24:41,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:41,409 INFO L93 Difference]: Finished difference Result 125 states and 157 transitions. [2020-09-21 11:24:41,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:24:41,410 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-09-21 11:24:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:41,411 INFO L225 Difference]: With dead ends: 125 [2020-09-21 11:24:41,412 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 11:24:41,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-09-21 11:24:41,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 11:24:41,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2020-09-21 11:24:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-21 11:24:41,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2020-09-21 11:24:41,424 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 47 [2020-09-21 11:24:41,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:41,424 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2020-09-21 11:24:41,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:24:41,424 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2020-09-21 11:24:41,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-21 11:24:41,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:41,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:41,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:24:41,426 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:41,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:41,427 INFO L82 PathProgramCache]: Analyzing trace with hash -877094443, now seen corresponding path program 1 times [2020-09-21 11:24:41,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:41,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310108830] [2020-09-21 11:24:41,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,482 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,482 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,483 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,483 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 11:24:41,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 11:24:41,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:24:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 11:24:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,527 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,527 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,527 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,527 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:41,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:41,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:41,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,541 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:41,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:24:41,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,590 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,591 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,591 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,591 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 11:24:41,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:24:41,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:41,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:24:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 11:24:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,664 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,664 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,664 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,665 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:41,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:41,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:24:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:41,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:24:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:41,674 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:41,674 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:41,674 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:41,674 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:41,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:41,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:24:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:41,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310108830] [2020-09-21 11:24:41,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:41,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:24:41,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114400109] [2020-09-21 11:24:41,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:24:41,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:24:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:24:41,683 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand 12 states. [2020-09-21 11:24:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:42,220 INFO L93 Difference]: Finished difference Result 123 states and 153 transitions. [2020-09-21 11:24:42,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:24:42,220 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-09-21 11:24:42,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:42,224 INFO L225 Difference]: With dead ends: 123 [2020-09-21 11:24:42,224 INFO L226 Difference]: Without dead ends: 86 [2020-09-21 11:24:42,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:24:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-21 11:24:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 70. [2020-09-21 11:24:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-21 11:24:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-09-21 11:24:42,239 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 48 [2020-09-21 11:24:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:42,240 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-09-21 11:24:42,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:24:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-09-21 11:24:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 11:24:42,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:42,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:42,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:24:42,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2083565480, now seen corresponding path program 1 times [2020-09-21 11:24:42,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:42,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954060047] [2020-09-21 11:24:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:42,298 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:42,299 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:42,299 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:42,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 11:24:42,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-21 11:24:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:24:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 11:24:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:42,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:42,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:42,340 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:42,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:42,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:42,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:42,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:42,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:42,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:42,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:42,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:42,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:42,357 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:42,357 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:42,357 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:42,358 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:42,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 11:24:42,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:42,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:24:42,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:42,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:24:42,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:42,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 11:24:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:42,475 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:42,476 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:42,476 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:42,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 11:24:42,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:24:42,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:42,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:42,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:24:42,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:42,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-21 11:24:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:42,541 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:42,541 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:42,542 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:42,542 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:42,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:42,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:42,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:42,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:24:42,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:42,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:42,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:24:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:42,550 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:42,550 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:42,550 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:42,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:24:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:24:42,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954060047] [2020-09-21 11:24:42,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:42,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 11:24:42,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895095960] [2020-09-21 11:24:42,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 11:24:42,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:42,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 11:24:42,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:24:42,561 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 13 states. [2020-09-21 11:24:43,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:43,311 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2020-09-21 11:24:43,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:24:43,311 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-09-21 11:24:43,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:43,313 INFO L225 Difference]: With dead ends: 138 [2020-09-21 11:24:43,314 INFO L226 Difference]: Without dead ends: 92 [2020-09-21 11:24:43,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-09-21 11:24:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-21 11:24:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 59. [2020-09-21 11:24:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-21 11:24:43,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2020-09-21 11:24:43,325 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 51 [2020-09-21 11:24:43,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:43,326 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2020-09-21 11:24:43,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 11:24:43,326 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2020-09-21 11:24:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:24:43,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:43,328 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:43,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:24:43,328 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:43,329 INFO L82 PathProgramCache]: Analyzing trace with hash -137443652, now seen corresponding path program 2 times [2020-09-21 11:24:43,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:43,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636808427] [2020-09-21 11:24:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:43,381 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:43,382 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:43,382 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:43,382 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:43,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-21 11:24:43,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:43,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 11:24:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:24:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 11:24:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 11:24:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:43,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:43,435 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:43,435 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:43,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:43,436 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:43,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:43,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:43,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:43,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:43,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:43,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:43,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:43,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:43,443 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:43,443 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:43,444 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:43,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:43,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:43,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:43,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:43,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:43,487 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:43,487 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:43,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:43,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:43,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:24:43,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:24:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:43,536 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:43,536 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:43,536 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:43,537 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:43,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:43,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:43,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:43,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:43,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:24:43,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:24:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:43,551 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:43,551 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:43,552 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:43,552 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:43,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:24:43,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:43,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:24:43,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:43,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:24:43,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:43,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:24:43,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-21 11:24:43,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636808427] [2020-09-21 11:24:43,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:43,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 11:24:43,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923340008] [2020-09-21 11:24:43,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:24:43,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:43,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:24:43,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:24:43,601 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand 12 states. [2020-09-21 11:24:44,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:44,117 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2020-09-21 11:24:44,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:24:44,118 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-21 11:24:44,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:44,119 INFO L225 Difference]: With dead ends: 79 [2020-09-21 11:24:44,119 INFO L226 Difference]: Without dead ends: 75 [2020-09-21 11:24:44,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:24:44,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-21 11:24:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 68. [2020-09-21 11:24:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 11:24:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-09-21 11:24:44,131 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 52 [2020-09-21 11:24:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:44,131 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-09-21 11:24:44,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:24:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-09-21 11:24:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:24:44,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:44,133 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:44,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:24:44,133 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:44,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:44,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1960431148, now seen corresponding path program 1 times [2020-09-21 11:24:44,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:44,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [49373264] [2020-09-21 11:24:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,188 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,188 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-21 11:24:44,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:24:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:24:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-21 11:24:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:24:44,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,251 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,251 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,251 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,252 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:44,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:44,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,260 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,261 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:44,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:44,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:44,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:44,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,288 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,288 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,289 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,290 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:44,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:44,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:44,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:44,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:44,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:24:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,310 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,311 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,311 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,311 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:44,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:24:44,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:44,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:24:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,350 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,350 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,350 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,351 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:24:44,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:24:44,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-21 11:24:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-21 11:24:44,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [49373264] [2020-09-21 11:24:44,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:24:44,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 11:24:44,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058379094] [2020-09-21 11:24:44,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:24:44,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:44,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:24:44,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:24:44,368 INFO L87 Difference]: Start difference. First operand 68 states and 81 transitions. Second operand 9 states. [2020-09-21 11:24:44,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:44,668 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2020-09-21 11:24:44,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:24:44,668 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-21 11:24:44,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:44,670 INFO L225 Difference]: With dead ends: 127 [2020-09-21 11:24:44,670 INFO L226 Difference]: Without dead ends: 86 [2020-09-21 11:24:44,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:24:44,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-21 11:24:44,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2020-09-21 11:24:44,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-21 11:24:44,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2020-09-21 11:24:44,698 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 53 [2020-09-21 11:24:44,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:44,698 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2020-09-21 11:24:44,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:24:44,701 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2020-09-21 11:24:44,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 11:24:44,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:44,703 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:44,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:24:44,703 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:44,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1747730134, now seen corresponding path program 1 times [2020-09-21 11:24:44,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:44,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843503034] [2020-09-21 11:24:44,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:44,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,834 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:24:44,834 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,834 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,834 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-21 11:24:44,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 11:24:44,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 11:24:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 11:24:44,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 11:24:44,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,930 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,930 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,931 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,931 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:44,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:44,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:44,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,936 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,936 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,936 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,936 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:44,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:44,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:44,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:44,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:44,987 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:44,987 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:44,987 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:44,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:44,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:44,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 11:24:44,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:44,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:24:44,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:45,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:24:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:45,112 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:45,112 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:45,112 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:45,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:45,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:45,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:45,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:24:45,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:45,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:24:45,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:45,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:24:45,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:45,140 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:45,140 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:45,140 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:45,141 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:45,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 11:24:45,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:45,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:24:45,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:45,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:45,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:24:45,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 11:24:45,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843503034] [2020-09-21 11:24:45,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:45,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-21 11:24:45,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616870736] [2020-09-21 11:24:45,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 11:24:45,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:45,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 11:24:45,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:24:45,218 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand 14 states. [2020-09-21 11:24:46,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:46,020 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2020-09-21 11:24:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:24:46,021 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-21 11:24:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:46,023 INFO L225 Difference]: With dead ends: 96 [2020-09-21 11:24:46,023 INFO L226 Difference]: Without dead ends: 92 [2020-09-21 11:24:46,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-09-21 11:24:46,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-21 11:24:46,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2020-09-21 11:24:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 11:24:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-09-21 11:24:46,036 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 53 [2020-09-21 11:24:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:46,036 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-09-21 11:24:46,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 11:24:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-09-21 11:24:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 11:24:46,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:46,038 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:46,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:24:46,039 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:46,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:46,039 INFO L82 PathProgramCache]: Analyzing trace with hash 645381370, now seen corresponding path program 2 times [2020-09-21 11:24:46,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:46,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962821690] [2020-09-21 11:24:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:46,136 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:46,136 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:46,136 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:46,136 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:46,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 11:24:46,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:46,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-21 11:24:46,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:46,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-21 11:24:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:46,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:24:46,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:46,289 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:46,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:46,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:46,294 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:46,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:46,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:24:46,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:46,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:46,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:46,306 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:46,306 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:46,306 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:46,307 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:46,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:46,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:46,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:24:46,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:46,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:46,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:46,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:46,355 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:46,356 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:46,356 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:46,356 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:46,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:46,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:46,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:24:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:46,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:24:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:46,374 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:46,374 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:46,374 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:46,375 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:46,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:46,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:46,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:24:46,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:46,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:46,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:46,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:24:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:46,399 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:46,400 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:46,400 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:46,400 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:46,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:46,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:24:46,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:24:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:24:46,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-21 11:24:46,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962821690] [2020-09-21 11:24:46,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:46,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 11:24:46,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887671498] [2020-09-21 11:24:46,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 11:24:46,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:46,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 11:24:46,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:24:46,474 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 15 states. [2020-09-21 11:24:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:47,213 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2020-09-21 11:24:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:24:47,215 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-09-21 11:24:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:47,216 INFO L225 Difference]: With dead ends: 126 [2020-09-21 11:24:47,217 INFO L226 Difference]: Without dead ends: 122 [2020-09-21 11:24:47,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:24:47,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-21 11:24:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 94. [2020-09-21 11:24:47,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-21 11:24:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 118 transitions. [2020-09-21 11:24:47,233 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 118 transitions. Word has length 54 [2020-09-21 11:24:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:47,233 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 118 transitions. [2020-09-21 11:24:47,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 11:24:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 118 transitions. [2020-09-21 11:24:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 11:24:47,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:47,235 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:47,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:24:47,236 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:47,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:47,236 INFO L82 PathProgramCache]: Analyzing trace with hash 832308054, now seen corresponding path program 3 times [2020-09-21 11:24:47,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:47,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87200730] [2020-09-21 11:24:47,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:47,372 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:47,372 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:47,372 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:47,373 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:47,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 11:24:47,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-21 11:24:47,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 11:24:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 11:24:47,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 11:24:47,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:47,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:47,461 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:47,461 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:47,461 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:47,461 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:47,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:47,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:47,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:47,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:47,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:47,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:47,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:47,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:47,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:47,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:47,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:47,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:47,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:47,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:47,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:47,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:47,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:47,535 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:47,535 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:47,535 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:47,535 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:47,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:47,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:47,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-21 11:24:47,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:47,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:24:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:47,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:24:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:47,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:24:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:47,698 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:47,699 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:47,699 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:47,699 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:47,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:47,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:47,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:47,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 11:24:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:47,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 11:24:47,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:47,748 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:47,749 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:47,749 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:47,749 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:47,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 11:24:47,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 11:24:47,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:47,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:47,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:24:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 11:24:47,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87200730] [2020-09-21 11:24:47,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:47,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-21 11:24:47,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125270201] [2020-09-21 11:24:47,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-21 11:24:47,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:47,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-21 11:24:47,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-09-21 11:24:47,911 INFO L87 Difference]: Start difference. First operand 94 states and 118 transitions. Second operand 17 states. [2020-09-21 11:24:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:48,995 INFO L93 Difference]: Finished difference Result 137 states and 173 transitions. [2020-09-21 11:24:48,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 11:24:48,998 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-21 11:24:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:48,999 INFO L225 Difference]: With dead ends: 137 [2020-09-21 11:24:48,999 INFO L226 Difference]: Without dead ends: 127 [2020-09-21 11:24:49,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-09-21 11:24:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-21 11:24:49,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2020-09-21 11:24:49,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-21 11:24:49,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 147 transitions. [2020-09-21 11:24:49,032 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 147 transitions. Word has length 55 [2020-09-21 11:24:49,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:49,032 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 147 transitions. [2020-09-21 11:24:49,033 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-21 11:24:49,033 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 147 transitions. [2020-09-21 11:24:49,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:24:49,035 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:49,035 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:49,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:24:49,035 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:49,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:49,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1162383005, now seen corresponding path program 1 times [2020-09-21 11:24:49,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:49,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401965147] [2020-09-21 11:24:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:49,115 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:49,116 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:49,116 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:49,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 11:24:49,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-21 11:24:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:24:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:24:49,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-21 11:24:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:24:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:49,177 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:49,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:49,177 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:49,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:49,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:24:49,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:49,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:49,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:49,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:24:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:49,196 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:49,196 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:49,196 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:49,196 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:49,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:49,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:49,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:24:49,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:49,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:24:49,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:49,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:24:49,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:49,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-21 11:24:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:49,237 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:49,237 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:49,237 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:24:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:24:49,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:24:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:24:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 11:24:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:49,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 11:24:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:49,267 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:49,268 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:49,268 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:49,268 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:49,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 11:24:49,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:49,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:24:49,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:24:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:24:49,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:24:49,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:49,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-21 11:24:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:24:49,333 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:24:49,334 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:24:49,334 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:24:49,334 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:24:49,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-21 11:24:49,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:24:49,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:24:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:24:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:24:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:24:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:24:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:24:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 11:24:49,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401965147] [2020-09-21 11:24:49,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:24:49,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:24:49,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711642066] [2020-09-21 11:24:49,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:24:49,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:24:49,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:24:49,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:24:49,344 INFO L87 Difference]: Start difference. First operand 115 states and 147 transitions. Second operand 12 states. [2020-09-21 11:24:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:24:50,094 INFO L93 Difference]: Finished difference Result 221 states and 294 transitions. [2020-09-21 11:24:50,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 11:24:50,095 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-21 11:24:50,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:24:50,100 INFO L225 Difference]: With dead ends: 221 [2020-09-21 11:24:50,101 INFO L226 Difference]: Without dead ends: 157 [2020-09-21 11:24:50,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2020-09-21 11:24:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-21 11:24:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-09-21 11:24:50,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-21 11:24:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 167 transitions. [2020-09-21 11:24:50,132 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 167 transitions. Word has length 57 [2020-09-21 11:24:50,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:24:50,132 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 167 transitions. [2020-09-21 11:24:50,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:24:50,133 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 167 transitions. [2020-09-21 11:24:50,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 11:24:50,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:24:50,134 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:24:50,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:24:50,135 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:24:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:24:50,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1585084831, now seen corresponding path program 1 times [2020-09-21 11:24:50,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:24:50,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909288792] [2020-09-21 11:24:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:24:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:24:50,173 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:24:50,173 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:24:50,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:24:50,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:24:50 BoogieIcfgContainer [2020-09-21 11:24:50,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:24:50,213 INFO L168 Benchmark]: Toolchain (without parser) took 13416.14 ms. Allocated memory was 145.8 MB in the beginning and 363.9 MB in the end (delta: 218.1 MB). Free memory was 100.4 MB in the beginning and 83.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 235.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:50,214 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 11:24:50,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.04 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 166.7 MB in the end (delta: -66.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:50,215 INFO L168 Benchmark]: Boogie Preprocessor took 76.72 ms. Allocated memory is still 202.4 MB. Free memory was 166.7 MB in the beginning and 163.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:50,216 INFO L168 Benchmark]: RCFGBuilder took 766.60 ms. Allocated memory is still 202.4 MB. Free memory was 163.2 MB in the beginning and 111.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:50,217 INFO L168 Benchmark]: TraceAbstraction took 11814.84 ms. Allocated memory was 202.4 MB in the beginning and 363.9 MB in the end (delta: 161.5 MB). Free memory was 111.3 MB in the beginning and 83.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:24:50,220 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.04 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 166.7 MB in the end (delta: -66.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.72 ms. Allocated memory is still 202.4 MB. Free memory was 166.7 MB in the beginning and 163.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 766.60 ms. Allocated memory is still 202.4 MB. Free memory was 163.2 MB in the beginning and 111.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11814.84 ms. Allocated memory was 202.4 MB in the beginning and 363.9 MB in the end (delta: 161.5 MB). Free memory was 111.3 MB in the beginning and 83.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L616] RET, EXPR _get_nondet_int(2, 5) [L616] const int len = _get_nondet_int(2, 5); [L617] SLL s = sll_create(len); [L617] CALL, EXPR sll_create(len) [L564] SLL head = ((void *)0); [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND TRUE len-- > 0 [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); [L567] COND FALSE !(((void *)0) == new_head) [L570] new_head->next = head [L571] head = new_head [L565] EXPR len-- [L565] COND FALSE !(len-- > 0) [L573] return head; [L617] RET, EXPR sll_create(len) [L617] SLL s = sll_create(len); [L618] CALL, EXPR _get_nondet_int(0, len - 1) [L609] int len = from; [L610] len < until && __VERIFIER_nondet_int() [L610] len < until && __VERIFIER_nondet_int() [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ [L610] len < until && __VERIFIER_nondet_int() [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] return len; [L618] RET, EXPR _get_nondet_int(0, len - 1) [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; [L620] i < k && __VERIFIER_nondet_int() [L620] i < k && __VERIFIER_nondet_int() [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR \read(s) [L625] CALL, EXPR sll_length(s) [L576] int len = 0; [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ [L579] EXPR head->next [L579] head = head->next [L577] COND FALSE !(\read(head)) [L581] return len; [L625] RET, EXPR sll_length(s) [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 664 SDtfs, 736 SDslu, 3682 SDs, 0 SdLazy, 4264 SolverSat, 351 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 306 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 188 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 130733 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 89/159 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...