/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:42:12,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:42:12,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:42:12,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:42:12,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:42:12,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:42:12,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:42:12,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:42:12,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:42:12,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:42:12,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:42:12,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:42:12,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:42:12,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:42:12,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:42:12,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:42:12,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:42:12,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:42:12,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:42:12,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:42:12,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:42:12,145 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:42:12,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:42:12,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:42:12,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:42:12,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:42:12,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:42:12,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:42:12,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:42:12,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:42:12,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:42:12,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:42:12,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:42:12,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:42:12,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:42:12,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:42:12,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:42:12,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:42:12,163 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:42:12,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:42:12,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:42:12,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:42:12,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:42:12,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:42:12,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:42:12,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:42:12,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:42:12,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:42:12,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:42:12,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:42:12,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:42:12,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:42:12,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:42:12,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:42:12,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:42:12,195 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:42:12,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:42:12,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:42:12,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:42:12,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:42:12,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:42:12,196 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:42:12,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:42:12,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:42:12,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:42:12,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:42:12,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:42:12,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:42:12,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:42:12,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:42:12,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:42:12,198 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.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:42:12,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:42:12,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:42:12,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:42:12,560 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:42:12,561 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:42:12,562 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-14 23:42:12,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29406017e/21a70d067c0c4536ad4a34690c988f49/FLAG1a129c14f [2020-10-14 23:42:13,209 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:42:13,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-14 23:42:13,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29406017e/21a70d067c0c4536ad4a34690c988f49/FLAG1a129c14f [2020-10-14 23:42:13,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/29406017e/21a70d067c0c4536ad4a34690c988f49 [2020-10-14 23:42:13,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:42:13,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:42:13,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:42:13,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:42:13,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:42:13,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:42:13" (1/1) ... [2020-10-14 23:42:13,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432f0dcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:13, skipping insertion in model container [2020-10-14 23:42:13,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:42:13" (1/1) ... [2020-10-14 23:42:13,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:42:13,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:42:14,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:42:14,099 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:42:14,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:42:14,223 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:42:14,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14 WrapperNode [2020-10-14 23:42:14,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:42:14,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:42:14,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:42:14,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:42:14,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... [2020-10-14 23:42:14,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... [2020-10-14 23:42:14,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... [2020-10-14 23:42:14,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... [2020-10-14 23:42:14,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... [2020-10-14 23:42:14,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... [2020-10-14 23:42:14,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... [2020-10-14 23:42:14,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:42:14,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:42:14,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:42:14,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:42:14,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:42:14,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:42:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:42:14,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 23:42:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 23:42:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 23:42:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 23:42:14,413 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 23:42:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 23:42:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-14 23:42:14,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:42:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:42:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:42:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 23:42:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 23:42:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:42:14,417 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:42:14,418 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:42:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:42:14,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:42:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:42:14,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:42:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:42:14,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:42:14,423 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:42:14,424 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:42:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:42:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:42:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:42:14,427 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:42:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:42:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:42:14,428 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:42:14,429 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:42:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:42:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:42:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:42:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:42:14,430 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:42:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:42:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:42:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:42:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:42:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:42:14,431 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:42:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:42:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:42:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:42:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:42:14,432 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:42:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:42:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:42:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:42:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:42:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:42:14,433 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:42:14,434 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:42:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:42:14,435 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:42:14,436 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:42:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:42:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:42:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:42:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:42:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:42:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:42:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:42:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:42:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:42:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:42:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:42:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:42:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:42:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:42:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:42:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:42:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:42:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:42:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:42:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:42:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:42:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:42:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:42:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:42:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:42:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:42:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:42:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:42:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:42:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:42:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:42:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:42:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:42:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:42:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:42:14,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:42:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:42:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:42:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:42:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:42:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:42:14,443 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:42:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:42:14,444 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:42:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:42:14,445 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:42:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 23:42:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 23:42:14,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:42:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:42:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:42:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 23:42:14,447 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 23:42:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:42:14,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:42:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-14 23:42:14,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:42:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:42:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 23:42:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:42:14,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:42:14,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:42:14,995 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 23:42:15,255 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:42:15,256 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-14 23:42:15,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:42:15 BoogieIcfgContainer [2020-10-14 23:42:15,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:42:15,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:42:15,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:42:15,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:42:15,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:42:13" (1/3) ... [2020-10-14 23:42:15,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51649243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:42:15, skipping insertion in model container [2020-10-14 23:42:15,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:42:14" (2/3) ... [2020-10-14 23:42:15,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51649243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:42:15, skipping insertion in model container [2020-10-14 23:42:15,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:42:15" (3/3) ... [2020-10-14 23:42:15,269 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2020-10-14 23:42:15,300 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:42:15,313 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:42:15,338 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:42:15,365 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:42:15,365 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:42:15,366 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:42:15,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:42:15,366 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:42:15,366 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:42:15,366 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:42:15,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:42:15,389 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-14 23:42:15,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:42:15,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:15,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:15,400 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:15,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1925718240, now seen corresponding path program 1 times [2020-10-14 23:42:15,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:15,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213964883] [2020-10-14 23:42:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:15,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:15,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:16,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:42:16,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1151 [2020-10-14 23:42:16,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:16,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:16,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:16,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:42:16,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:42:16,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:16,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:16,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:16,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:16,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:16,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:16,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:16,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:16,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:16,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:16,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:16,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 23:42:16,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:16,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:16,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:16,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:16,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:16,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:16,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:17,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:17,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:42:17,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:17,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 23:42:17,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:17,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:17,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:17,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:42:17,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:17,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:17,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:17,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:17,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:17,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:42:17,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:17,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:17,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:17,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:17,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:17,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:17,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213964883] [2020-10-14 23:42:17,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:42:17,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 23:42:17,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022973172] [2020-10-14 23:42:17,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:42:17,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:17,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:42:17,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:42:17,185 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 8 states. [2020-10-14 23:42:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:17,572 INFO L93 Difference]: Finished difference Result 107 states and 146 transitions. [2020-10-14 23:42:17,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:42:17,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-14 23:42:17,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:17,586 INFO L225 Difference]: With dead ends: 107 [2020-10-14 23:42:17,587 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:42:17,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:42:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:42:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2020-10-14 23:42:17,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:42:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-14 23:42:17,645 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-10-14 23:42:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:17,645 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-14 23:42:17,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:42:17,646 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-14 23:42:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:42:17,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:17,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:42:17,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:42:17,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:17,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1649510061, now seen corresponding path program 1 times [2020-10-14 23:42:17,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:17,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696832469] [2020-10-14 23:42:17,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:17,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:17,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:17,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:42:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-14 23:42:19,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:42:19,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:42:19,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:19,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:19,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:19,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:19,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:19,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:19,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:19,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:19,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:19,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:42:19,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:19,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:19,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:42:19,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:19,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 23:42:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:19,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 23:42:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:19,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:42:19,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:19,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:19,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:19,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:19,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 23:42:19,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:19,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:19,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:42:19,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:42:19,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696832469] [2020-10-14 23:42:19,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:19,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:42:19,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360865941] [2020-10-14 23:42:19,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:42:19,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:19,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:42:19,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:42:19,477 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-10-14 23:42:20,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:20,005 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2020-10-14 23:42:20,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:42:20,006 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:42:20,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:20,009 INFO L225 Difference]: With dead ends: 60 [2020-10-14 23:42:20,009 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:42:20,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:42:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:42:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-14 23:42:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 23:42:20,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-14 23:42:20,044 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 32 [2020-10-14 23:42:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:20,045 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-14 23:42:20,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:42:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-14 23:42:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:42:20,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:20,049 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, 1, 1, 1, 1] [2020-10-14 23:42:20,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:42:20,050 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash 920788662, now seen corresponding path program 1 times [2020-10-14 23:42:20,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:20,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42011976] [2020-10-14 23:42:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:20,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:21,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:23,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:42:23,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:42:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3325 [2020-10-14 23:42:23,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:23,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:23,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:42:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:42:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:23,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:23,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:23,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:23,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:23,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:23,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:23,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:23,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:23,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:23,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:42:23,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:23,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:23,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 23:42:23,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:23,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:23,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:23,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:23,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:23,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:23,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:23,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:42:23,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:23,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:23,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:23,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:23,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:23,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:23,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:23,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:23,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-14 23:42:23,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:23,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:23,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:23,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:23,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:23,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:23,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:23,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:42:23,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:23,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:23,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:23,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:23,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:42:23,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42011976] [2020-10-14 23:42:23,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:23,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:42:23,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802820251] [2020-10-14 23:42:23,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:42:23,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:23,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:42:23,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:42:23,984 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 11 states. [2020-10-14 23:42:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:24,433 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-10-14 23:42:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:42:24,434 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-14 23:42:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:24,436 INFO L225 Difference]: With dead ends: 74 [2020-10-14 23:42:24,436 INFO L226 Difference]: Without dead ends: 65 [2020-10-14 23:42:24,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:42:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-14 23:42:24,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2020-10-14 23:42:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:42:24,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-14 23:42:24,450 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 41 [2020-10-14 23:42:24,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:24,451 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-14 23:42:24,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:42:24,451 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-14 23:42:24,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:42:24,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:24,454 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, 1, 1, 1, 1, 1] [2020-10-14 23:42:24,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:42:24,454 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:24,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:24,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1520377100, now seen corresponding path program 1 times [2020-10-14 23:42:24,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:24,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895206350] [2020-10-14 23:42:24,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:25,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:27,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 23:42:29,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:42:29,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 23:42:29,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 23:42:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:29,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 23:42:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:42:29,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:29,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:29,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:29,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:42:29,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:29,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:29,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:29,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:29,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:30,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:30,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:30,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-10-14 23:42:30,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:30,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:30,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:30,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:30,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:30,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:30,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:30,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:42:30,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:30,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:30,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:30,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 23:42:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:30,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:30,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:30,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:30,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:42:30,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-14 23:42:30,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:30,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:42:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:30,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:30,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:31,340 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-14 23:42:31,734 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 56 [2020-10-14 23:42:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:31,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:31,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:31,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:42:31,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:31,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:42:32,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895206350] [2020-10-14 23:42:32,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:32,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:42:32,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739167480] [2020-10-14 23:42:32,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:42:32,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:32,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:42:32,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:42:32,018 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 20 states. [2020-10-14 23:42:33,017 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-14 23:42:33,292 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2020-10-14 23:42:33,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:33,709 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2020-10-14 23:42:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:42:33,710 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2020-10-14 23:42:33,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:33,712 INFO L225 Difference]: With dead ends: 97 [2020-10-14 23:42:33,712 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 23:42:33,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=92, Invalid=838, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:42:33,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 23:42:33,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 53. [2020-10-14 23:42:33,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:42:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-14 23:42:33,737 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 42 [2020-10-14 23:42:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:33,738 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-14 23:42:33,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:42:33,739 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-14 23:42:33,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:42:33,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:33,743 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:42:33,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:42:33,744 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:33,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:33,748 INFO L82 PathProgramCache]: Analyzing trace with hash 358537395, now seen corresponding path program 2 times [2020-10-14 23:42:33,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:33,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359785603] [2020-10-14 23:42:33,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:33,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:34,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:34,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:42:34,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:34,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1103 [2020-10-14 23:42:34,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:34,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:42:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 23:42:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:35,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:35,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:35,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:35,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:42:35,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:35,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:35,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:35,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:35,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:35,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:35,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:35,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:42:35,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:35,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 23:42:35,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:35,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:42:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:35,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:42:35,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:35,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:35,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:35,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:35,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:35,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:35,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:42:35,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:35,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:35,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:42:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:35,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:35,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:35,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:35,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:35,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 23:42:35,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:35,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:42:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:42:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:35,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:35,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:35,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-14 23:42:35,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:35,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:42:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:36,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:36,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:36,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:36,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 23:42:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:36,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:36,822 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-14 23:42:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:42:36,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359785603] [2020-10-14 23:42:36,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:36,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 23:42:36,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914916364] [2020-10-14 23:42:36,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 23:42:36,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:36,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 23:42:36,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:42:36,852 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 24 states. [2020-10-14 23:42:37,536 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-10-14 23:42:38,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:38,750 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2020-10-14 23:42:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:42:38,750 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 50 [2020-10-14 23:42:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:38,752 INFO L225 Difference]: With dead ends: 65 [2020-10-14 23:42:38,752 INFO L226 Difference]: Without dead ends: 63 [2020-10-14 23:42:38,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:42:38,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-14 23:42:38,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 54. [2020-10-14 23:42:38,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:42:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2020-10-14 23:42:38,766 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 50 [2020-10-14 23:42:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:38,767 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2020-10-14 23:42:38,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 23:42:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2020-10-14 23:42:38,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 23:42:38,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:38,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:42:38,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:42:38,769 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:38,769 INFO L82 PathProgramCache]: Analyzing trace with hash -450809231, now seen corresponding path program 1 times [2020-10-14 23:42:38,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:38,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44211580] [2020-10-14 23:42:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 23:42:40,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1887 [2020-10-14 23:42:40,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:42:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:40,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 23:42:40,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:40,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:40,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:40,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:40,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:40,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:40,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:40,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:42:40,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:40,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 23:42:40,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:40,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:40,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:40,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:42:40,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:40,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:40,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:41,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:41,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:41,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 23:42:41,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:41,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:41,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:41,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:41,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:42:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:41,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:41,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:41,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:41,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:42:41,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:41,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:41,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:41,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:42:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:41,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:41,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:41,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:41,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:41,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-14 23:42:41,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:41,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:42:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:41,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:41,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:41,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:41,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:41,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:42:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:41,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:41,483 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:42:41,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44211580] [2020-10-14 23:42:41,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:41,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:42:41,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093240054] [2020-10-14 23:42:41,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:42:41,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:41,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:42:41,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:42:41,487 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand 19 states. [2020-10-14 23:42:42,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:42,536 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2020-10-14 23:42:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:42:42,536 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-14 23:42:42,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:42,539 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:42:42,539 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 23:42:42,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:42:42,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 23:42:42,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-14 23:42:42,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:42:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-14 23:42:42,551 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 50 [2020-10-14 23:42:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:42,552 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-14 23:42:42,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:42:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-14 23:42:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:42:42,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:42,554 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 23:42:42,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:42:42,554 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:42,555 INFO L82 PathProgramCache]: Analyzing trace with hash -93116136, now seen corresponding path program 3 times [2020-10-14 23:42:42,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:42,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93499102] [2020-10-14 23:42:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:42,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:42,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:43,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 23:42:43,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:43,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-14 23:42:43,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:43,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:43,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:42:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:43,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 23:42:43,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:43,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:43,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:43,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:43,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:43,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:43,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:43,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:42:43,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 23:42:43,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:43,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:43,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:42:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:43,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:43,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:43,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:42:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:43,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:43,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:43,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:42:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:43,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:43,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:43,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:43,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:42:43,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:43,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:43,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:42:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:43,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:43,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:42:43,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:43,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 23:42:43,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:43,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:43,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 23:42:43,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:42:43,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:43,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:43,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:43,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:43,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:43,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 23:42:43,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:43,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 23:42:43,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93499102] [2020-10-14 23:42:43,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:43,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:42:43,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802990115] [2020-10-14 23:42:43,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:42:43,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:43,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:42:43,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:42:43,519 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2020-10-14 23:42:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:43,764 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2020-10-14 23:42:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:42:43,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-14 23:42:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:43,769 INFO L225 Difference]: With dead ends: 63 [2020-10-14 23:42:43,769 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:42:43,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:42:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:42:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-14 23:42:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:42:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-10-14 23:42:43,795 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 51 [2020-10-14 23:42:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:43,795 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-10-14 23:42:43,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:42:43,795 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-10-14 23:42:43,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 23:42:43,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:43,797 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 23:42:43,797 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:42:43,799 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:43,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:43,800 INFO L82 PathProgramCache]: Analyzing trace with hash 957077198, now seen corresponding path program 1 times [2020-10-14 23:42:43,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:43,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041786852] [2020-10-14 23:42:43,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:43,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:43,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:44,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:44,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:44,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:45,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:45,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 23:42:45,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:42:45,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1808 [2020-10-14 23:42:45,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:45,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:42:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:45,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:45,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:45,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:45,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:45,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:45,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:45,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:45,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:45,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:45,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:45,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:45,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:42:45,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:45,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 23:42:45,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:45,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:45,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:45,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:42:45,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:45,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:45,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:45,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:45,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:45,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:45,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:42:45,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:45,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:45,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:45,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:45,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:42:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:45,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:45,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:45,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:45,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:45,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:42:45,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:45,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:45,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:45,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:42:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:46,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:46,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:46,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:46,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:46,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 23:42:46,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:46,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:42:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:46,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:42:46,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:46,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:46,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:46,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:46,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:46,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:46,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:42:46,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:46,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:46,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:46,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:46,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 23:42:46,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041786852] [2020-10-14 23:42:46,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:46,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:42:46,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398043646] [2020-10-14 23:42:46,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:42:46,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:46,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:42:46,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:42:46,085 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 8 states. [2020-10-14 23:42:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:46,282 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-14 23:42:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:42:46,282 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-10-14 23:42:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:46,283 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:42:46,284 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:42:46,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:42:46,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:42:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-10-14 23:42:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:42:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2020-10-14 23:42:46,293 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 52 [2020-10-14 23:42:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:46,294 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2020-10-14 23:42:46,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:42:46,294 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2020-10-14 23:42:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:42:46,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:46,295 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:42:46,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:42:46,296 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:46,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:46,296 INFO L82 PathProgramCache]: Analyzing trace with hash -395432484, now seen corresponding path program 1 times [2020-10-14 23:42:46,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:46,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660424431] [2020-10-14 23:42:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:46,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:48,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:48,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 23:42:48,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:48,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1750 [2020-10-14 23:42:48,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:48,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 23:42:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 23:42:48,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:48,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:48,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:48,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:48,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:48,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:48,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:48,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:48,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:48,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:48,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:48,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:48,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:48,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:48,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:48,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:42:48,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-14 23:42:48,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:48,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:48,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:48,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:42:48,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:48,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:48,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:48,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:48,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:48,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:42:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:48,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:48,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:48,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:42:48,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:42:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:48,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:48,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:48,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:48,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:48,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:42:48,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:48,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:48,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:48,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:48,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:48,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:42:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:48,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:49,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:49,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:49,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:49,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-14 23:42:49,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:49,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:42:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:49,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:49,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:49,768 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2020-10-14 23:42:50,072 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2020-10-14 23:42:50,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:50,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:50,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:50,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:50,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 23:42:50,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:50,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:42:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:50,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:50,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:50,426 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 23:42:50,427 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660424431] [2020-10-14 23:42:50,427 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:50,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 23:42:50,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117902278] [2020-10-14 23:42:50,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 23:42:50,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:50,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 23:42:50,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=548, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:42:50,429 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand 25 states. [2020-10-14 23:42:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:51,693 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-10-14 23:42:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:42:51,693 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-10-14 23:42:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:51,695 INFO L225 Difference]: With dead ends: 49 [2020-10-14 23:42:51,696 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:42:51,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:42:51,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:42:51,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-14 23:42:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:42:51,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-14 23:42:51,716 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 53 [2020-10-14 23:42:51,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:51,716 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-14 23:42:51,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 23:42:51,717 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-14 23:42:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:42:51,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:51,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:42:51,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:42:51,724 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:51,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:51,724 INFO L82 PathProgramCache]: Analyzing trace with hash -2053449651, now seen corresponding path program 1 times [2020-10-14 23:42:51,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:51,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699791312] [2020-10-14 23:42:51,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:52,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:53,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:53,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:42:53,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:53,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1726 [2020-10-14 23:42:53,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:53,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-14 23:42:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:42:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 23:42:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:53,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:42:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:53,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:53,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:53,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:42:53,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:53,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:42:53,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:53,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:42:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:42:53,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:53,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:42:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:54,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:54,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:42:54,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-14 23:42:54,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:54,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:42:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:42:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:42:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:54,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:54,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:54,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:54,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:42:54,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 23:42:54,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:54,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:42:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:54,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:42:54,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:54,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:42:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:54,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:54,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:54,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:54,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:42:54,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:54,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:42:54,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:42:54,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:42:54,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:54,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:42:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:55,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:55,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:42:55,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-14 23:42:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:55,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:42:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:42:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:42:55,850 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2020-10-14 23:42:56,066 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-10-14 23:42:56,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:42:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:42:56,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:42:56,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:42:56,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:42:56,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 23:42:56,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:42:56,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:42:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:42:56,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:42:56,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:42:56,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:42:56,654 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-14 23:42:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:42:56,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699791312] [2020-10-14 23:42:56,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:42:56,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-14 23:42:56,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303526138] [2020-10-14 23:42:56,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-14 23:42:56,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:42:56,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-14 23:42:56,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=754, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:42:56,681 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 29 states. [2020-10-14 23:42:57,165 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-10-14 23:42:58,180 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-14 23:42:58,555 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-14 23:42:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:42:59,259 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-14 23:42:59,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 23:42:59,260 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 55 [2020-10-14 23:42:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:42:59,261 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:42:59,261 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:42:59,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=148, Invalid=1744, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:42:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:42:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-10-14 23:42:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:42:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-10-14 23:42:59,272 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 55 [2020-10-14 23:42:59,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:42:59,273 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-10-14 23:42:59,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-14 23:42:59,273 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-10-14 23:42:59,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 23:42:59,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:42:59,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:42:59,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:42:59,275 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:42:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:42:59,275 INFO L82 PathProgramCache]: Analyzing trace with hash -2053447977, now seen corresponding path program 1 times [2020-10-14 23:42:59,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:42:59,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067808539] [2020-10-14 23:42:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:42:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:42:59,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:00,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:04,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:43:04,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 23:43:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:04,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:04,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:04,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:43:04,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:04,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:04,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:04,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:04,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:04,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:43:04,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:04,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:04,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:04,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:04,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:04,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 23:43:04,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:04,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:43:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:04,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:43:04,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:05,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:43:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:05,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:05,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:05,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:05,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:43:05,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:05,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:43:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:05,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:43:05,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:43:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:05,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:05,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 23:43:05,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:05,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:43:05,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:05,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:05,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:43:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:05,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:05,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:05,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:43:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 23:43:05,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:05,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:43:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:43:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:06,265 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-14 23:43:06,690 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 65 [2020-10-14 23:43:07,273 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 77 [2020-10-14 23:43:08,026 WARN L193 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2020-10-14 23:43:08,699 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-10-14 23:43:08,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:43:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:08,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:08,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:08,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:08,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:43:08,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:08,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:43:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:08,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:08,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:09,406 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2020-10-14 23:43:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:43:09,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067808539] [2020-10-14 23:43:09,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:43:09,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-14 23:43:09,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070696253] [2020-10-14 23:43:09,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-14 23:43:09,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:09,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-14 23:43:09,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=809, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:43:09,448 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 30 states. [2020-10-14 23:43:10,173 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-14 23:43:12,434 WARN L193 SmtUtils]: Spent 960.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2020-10-14 23:43:13,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:13,306 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-10-14 23:43:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 23:43:13,307 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 55 [2020-10-14 23:43:13,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:13,308 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:43:13,308 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:43:13,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=147, Invalid=1833, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 23:43:13,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:43:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-10-14 23:43:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:43:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-14 23:43:13,319 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 55 [2020-10-14 23:43:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:13,319 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-14 23:43:13,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-14 23:43:13,320 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-14 23:43:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:43:13,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:13,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-10-14 23:43:13,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:43:13,321 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:13,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1973471608, now seen corresponding path program 1 times [2020-10-14 23:43:13,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:13,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205438244] [2020-10-14 23:43:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:13,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:13,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:13,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:14,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:43:14,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:43:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-14 23:43:14,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:14,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:43:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:43:14,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 23:43:14,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:14,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:14,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:14,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:43:14,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:14,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:14,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:14,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:43:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:43:14,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:43:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:14,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:14,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:14,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:43:14,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:14,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:14,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:14,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:14,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:43:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:14,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:14,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:43:14,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:14,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:14,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:43:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:14,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:14,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:43:14,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:14,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:43:14,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:14,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:43:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:14,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:43:14,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:14,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:43:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:14,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:14,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:14,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:14,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:14,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:43:14,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:14,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:14,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:14,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:14,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 23:43:14,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205438244] [2020-10-14 23:43:14,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:43:14,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:43:14,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185233235] [2020-10-14 23:43:14,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:43:14,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:14,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:43:14,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:43:14,270 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 9 states. [2020-10-14 23:43:14,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:43:14,491 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2020-10-14 23:43:14,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:43:14,491 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-10-14 23:43:14,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:43:14,492 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:43:14,492 INFO L226 Difference]: Without dead ends: 53 [2020-10-14 23:43:14,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:43:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-14 23:43:14,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-14 23:43:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 23:43:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-14 23:43:14,502 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 57 [2020-10-14 23:43:14,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:43:14,502 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-14 23:43:14,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:43:14,502 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-14 23:43:14,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 23:43:14,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:43:14,503 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-14 23:43:14,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:43:14,504 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:43:14,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:43:14,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1973469934, now seen corresponding path program 1 times [2020-10-14 23:43:14,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:43:14,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845356303] [2020-10-14 23:43:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:43:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:14,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:16,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:16,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 23:43:16,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:16,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-14 23:43:16,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:16,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 23:43:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:43:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 23:43:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:16,921 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-10-14 23:43:17,061 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-10-14 23:43:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:43:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:43:17,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:43:17,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:43:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:43:17,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:17,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:43:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:43:17,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 23:43:17,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:43:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:43:17,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:17,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:43:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:17,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:17,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:17,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:17,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:17,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:43:17,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:17,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:43:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:43:17,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:43:17,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:17,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:43:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:43:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:18,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 23:43:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:18,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:18,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:43:18,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-14 23:43:18,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:18,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:43:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:18,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:43:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:43:24,243 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2020-10-14 23:43:36,505 WARN L193 SmtUtils]: Spent 11.57 s on a formula simplification. DAG size of input: 292 DAG size of output: 178 [2020-10-14 23:43:55,200 WARN L193 SmtUtils]: Spent 17.57 s on a formula simplification. DAG size of input: 482 DAG size of output: 257 [2020-10-14 23:43:56,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:43:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:43:56,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:43:56,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:43:56,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:43:56,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:43:56,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 23:43:56,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:43:56,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:43:56,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:43:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:43:56,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:43:56,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:43:57,020 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:43:57,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845356303] [2020-10-14 23:43:57,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:43:57,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 23:43:57,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127047742] [2020-10-14 23:43:57,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 23:43:57,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:43:57,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 23:43:57,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:43:57,024 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 32 states. [2020-10-14 23:44:01,159 WARN L193 SmtUtils]: Spent 3.53 s on a formula simplification that was a NOOP. DAG size: 250 [2020-10-14 23:44:01,780 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-14 23:44:06,666 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification that was a NOOP. DAG size: 257 [2020-10-14 23:44:11,997 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-14 23:44:12,799 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 23:44:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:13,508 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-14 23:44:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:44:13,509 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 57 [2020-10-14 23:44:13,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:13,510 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:44:13,510 INFO L226 Difference]: Without dead ends: 58 [2020-10-14 23:44:13,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 45.3s TimeCoverageRelationStatistics Valid=176, Invalid=1894, Unknown=0, NotChecked=0, Total=2070 [2020-10-14 23:44:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-14 23:44:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-10-14 23:44:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 23:44:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-14 23:44:13,521 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 57 [2020-10-14 23:44:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:13,521 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-14 23:44:13,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 23:44:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-14 23:44:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 23:44:13,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:13,522 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-14 23:44:13,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:44:13,523 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:13,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:13,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1781161231, now seen corresponding path program 2 times [2020-10-14 23:44:13,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:13,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717674970] [2020-10-14 23:44:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:13,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:15,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:15,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:18,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:18,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 23:44:18,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:44:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 23:44:18,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:18,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-14 23:44:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:44:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:18,821 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-14 23:44:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:19,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:19,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:19,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:19,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:19,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:19,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:19,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:44:19,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:19,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-14 23:44:19,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:19,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 23:44:19,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:19,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:44:19,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:20,237 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-14 23:44:20,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:20,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:20,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:20,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:20,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 23:44:20,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:20,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:44:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:20,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:44:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:20,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:20,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:20,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:20,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:20,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 23:44:20,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:20,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:20,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:20,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:20,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:20,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:44:20,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:21,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:21,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:21,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 23:44:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:44:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:21,657 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2020-10-14 23:44:21,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:44:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:21,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:21,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:21,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:21,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:21,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-14 23:44:21,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:21,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:44:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:21,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:44:21,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:22,729 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2020-10-14 23:44:23,763 WARN L193 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2020-10-14 23:44:24,667 WARN L193 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 83 [2020-10-14 23:44:26,762 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 145 DAG size of output: 122 [2020-10-14 23:44:35,423 WARN L193 SmtUtils]: Spent 7.24 s on a formula simplification. DAG size of input: 168 DAG size of output: 152 [2020-10-14 23:44:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:35,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:35,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:35,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:35,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:44:35,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:35,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:35,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:36,429 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2020-10-14 23:44:36,484 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:44:36,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717674970] [2020-10-14 23:44:36,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:36,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 23:44:36,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798460183] [2020-10-14 23:44:36,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 23:44:36,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:36,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 23:44:36,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1183, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:44:36,487 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 36 states. [2020-10-14 23:44:37,738 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-10-14 23:44:39,399 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-14 23:44:40,335 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2020-10-14 23:44:43,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:43,542 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-14 23:44:43,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 23:44:43,544 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2020-10-14 23:44:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:43,545 INFO L225 Difference]: With dead ends: 59 [2020-10-14 23:44:43,545 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 23:44:43,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=190, Invalid=2566, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 23:44:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 23:44:43,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-10-14 23:44:43,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-14 23:44:43,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-14 23:44:43,555 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 66 [2020-10-14 23:44:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:43,556 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-14 23:44:43,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 23:44:43,556 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-14 23:44:43,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:44:43,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:43,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-14 23:44:43,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:44:43,557 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:43,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:43,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1995962688, now seen corresponding path program 2 times [2020-10-14 23:44:43,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:43,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356287097] [2020-10-14 23:44:43,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:43,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:43,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:44,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:44,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:44:44,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1294 [2020-10-14 23:44:44,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:44,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:44,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:44:44,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:44,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 23:44:44,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:45,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:45,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:45,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:45,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:45,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:45,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:45,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:45,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:45,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:44:45,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:45,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:44:45,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:45,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:44:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:45,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 23:44:45,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:45,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:45,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:45,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:45,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:45,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:44:45,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:45,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:45,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:45,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:45,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:45,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:45,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:45,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:45,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:44:45,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:45,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:45,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:45,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:44:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:45,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:45,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:45,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:45,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:45,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:44:45,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:45,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:44:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:45,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:45,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:45,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:45,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:45,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:44:45,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:45,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:45,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:45,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:44:45,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 23:44:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:45,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:45,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:45,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:45,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:45,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:45,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:45,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:45,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:45,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:45,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 23:44:45,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356287097] [2020-10-14 23:44:45,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:44:45,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:44:45,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677469215] [2020-10-14 23:44:45,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:44:45,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:45,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:44:45,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:44:45,399 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 16 states. [2020-10-14 23:44:46,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:46,106 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2020-10-14 23:44:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:44:46,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-14 23:44:46,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:46,109 INFO L225 Difference]: With dead ends: 89 [2020-10-14 23:44:46,109 INFO L226 Difference]: Without dead ends: 86 [2020-10-14 23:44:46,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:44:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-14 23:44:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2020-10-14 23:44:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 23:44:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2020-10-14 23:44:46,122 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 68 [2020-10-14 23:44:46,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:46,123 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2020-10-14 23:44:46,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:44:46,123 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2020-10-14 23:44:46,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 23:44:46,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:46,124 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 23:44:46,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:44:46,124 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:46,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:46,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1995961014, now seen corresponding path program 3 times [2020-10-14 23:44:46,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:46,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998669028] [2020-10-14 23:44:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:49,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:51,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:44:51,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 23:44:51,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:52,941 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 401 DAG size of output: 67 [2020-10-14 23:44:53,971 WARN L193 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 373 DAG size of output: 65 [2020-10-14 23:44:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:54,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:54,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:44:54,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:54,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:54,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:54,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:54,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:54,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:44:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:55,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:55,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:44:55,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-10-14 23:44:55,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:55,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:44:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:55,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 23:44:55,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:55,703 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-10-14 23:44:56,148 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-14 23:44:56,478 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2020-10-14 23:44:56,777 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 52 [2020-10-14 23:44:56,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 23:44:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:56,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:56,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:56,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:56,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 23:44:56,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:56,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:44:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:56,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:56,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:56,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 23:44:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:56,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:56,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:56,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:56,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:56,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 23:44:56,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:56,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:56,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:56,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:57,189 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 26 [2020-10-14 23:44:57,428 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-14 23:44:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 23:44:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:57,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:57,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 23:44:57,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:57,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 23:44:57,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:57,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:44:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:57,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:44:57,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:58,027 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2020-10-14 23:44:58,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:44:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:58,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:58,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:44:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:44:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:45:04,302 WARN L193 SmtUtils]: Spent 579.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 45 [2020-10-14 23:45:28,561 WARN L193 SmtUtils]: Spent 22.62 s on a formula simplification. DAG size of input: 554 DAG size of output: 151