/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-ext3-properties/sll_nondet_insert-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:02:47,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:02:47,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:02:47,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:02:47,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:02:47,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:02:47,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:02:47,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:02:47,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:02:47,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:02:47,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:02:47,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:02:47,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:02:47,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:02:47,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:02:47,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:02:47,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:02:47,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:02:47,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:02:47,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:02:47,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:02:47,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:02:47,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:02:47,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:02:47,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:02:47,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:02:47,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:02:47,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:02:47,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:02:47,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:02:47,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:02:47,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:02:47,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:02:47,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:02:47,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:02:47,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:02:47,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:02:47,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:02:47,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:02:47,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:02:47,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:02:47,388 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 05:02:47,426 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:02:47,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:02:47,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:02:47,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:02:47,428 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:02:47,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:02:47,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:02:47,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:02:47,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:02:47,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:02:47,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:02:47,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:02:47,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:02:47,431 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:02:47,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:02:47,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:02:47,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:02:47,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:02:47,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:02:47,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:02:47,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:02:47,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:02:47,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:02:47,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:02:47,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:02:47,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:02:47,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:02:47,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:02:47,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:02:47,434 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:02:47,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:02:47,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:02:47,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:02:47,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:02:47,765 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:02:47,766 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-14 05:02:47,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28327d07/b1be2534e60e4c26bfccb762fcd1764a/FLAG68212530f [2020-10-14 05:02:48,378 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:02:48,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2020-10-14 05:02:48,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28327d07/b1be2534e60e4c26bfccb762fcd1764a/FLAG68212530f [2020-10-14 05:02:48,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c28327d07/b1be2534e60e4c26bfccb762fcd1764a [2020-10-14 05:02:48,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:02:48,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:02:48,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:02:48,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:02:48,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:02:48,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:02:48" (1/1) ... [2020-10-14 05:02:48,669 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6617b54b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:48, skipping insertion in model container [2020-10-14 05:02:48,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:02:48" (1/1) ... [2020-10-14 05:02:48,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:02:48,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:02:49,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:02:49,141 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:02:49,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:02:49,250 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:02:49,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49 WrapperNode [2020-10-14 05:02:49,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:02:49,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:02:49,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:02:49,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:02:49,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (1/1) ... [2020-10-14 05:02:49,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (1/1) ... [2020-10-14 05:02:49,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (1/1) ... [2020-10-14 05:02:49,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (1/1) ... [2020-10-14 05:02:49,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (1/1) ... [2020-10-14 05:02:49,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (1/1) ... [2020-10-14 05:02:49,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (1/1) ... [2020-10-14 05:02:49,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:02:49,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:02:49,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:02:49,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:02:49,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (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 05:02:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:02:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:02:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:02:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:02:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:02:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 05:02:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-14 05:02:49,378 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 05:02:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-14 05:02:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-10-14 05:02:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:02:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:02:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:02:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:02:49,379 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:02:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:02:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:02:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:02:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:02:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:02:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:02:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:02:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:02:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:02:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:02:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:02:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:02:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:02:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:02:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:02:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:02:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:02:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:02:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:02:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:02:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:02:49,386 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:02:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:02:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:02:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:02:49,388 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:02:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:02:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:02:49,389 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:02:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:02:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:02:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:02:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:02:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:02:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:02:49,391 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:02:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:02:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:02:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:02:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:02:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:02:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:02:49,392 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:02:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:02:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:02:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:02:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:02:49,393 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:02:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:02:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:02:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:02:49,394 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:02:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:02:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:02:49,395 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:02:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:02:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:02:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:02:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:02:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:02:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:02:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:02:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:02:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:02:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:02:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:02:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:02:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:02:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:02:49,398 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:02:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:02:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:02:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:02:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:02:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:02:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:02:49,399 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:02:49,400 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:02:49,401 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:02:49,402 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 05:02:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:02:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:02:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-14 05:02:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:02:49,403 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 05:02:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:02:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-14 05:02:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-10-14 05:02:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:02:49,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:02:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:02:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:02:49,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:02:49,769 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:02:50,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:02:50,005 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-14 05:02:50,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:02:50 BoogieIcfgContainer [2020-10-14 05:02:50,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:02:50,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:02:50,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:02:50,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:02:50,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:02:48" (1/3) ... [2020-10-14 05:02:50,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9995d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:02:50, skipping insertion in model container [2020-10-14 05:02:50,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:02:49" (2/3) ... [2020-10-14 05:02:50,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9995d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:02:50, skipping insertion in model container [2020-10-14 05:02:50,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:02:50" (3/3) ... [2020-10-14 05:02:50,019 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2020-10-14 05:02:50,029 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:02:50,038 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:02:50,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:02:50,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:02:50,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:02:50,077 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:02:50,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:02:50,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:02:50,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:02:50,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:02:50,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:02:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-14 05:02:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:02:50,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:50,108 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:02:50,108 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:50,115 INFO L82 PathProgramCache]: Analyzing trace with hash -87837704, now seen corresponding path program 1 times [2020-10-14 05:02:50,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:50,123 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013901105] [2020-10-14 05:02:50,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:50,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:02:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:02:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 05:02:50,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:50,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:02:50,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:50,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:02:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:50,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:50,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:02:50,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:50,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:50,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:50,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:50,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:50,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:50,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:50,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:02:50,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:50,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:02:50,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:50,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:50,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-14 05:02:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:50,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:02:50,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:50,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:02:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:50,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 05:02:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:50,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:50,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:50,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:50,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:02:50,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:50,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:50,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:50,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:50,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:50,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 05:02:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:50,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:50,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:50,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:50,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:50,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:02:50,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:50,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:02:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:02:50,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013901105] [2020-10-14 05:02:50,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:50,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-10-14 05:02:50,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884843063] [2020-10-14 05:02:50,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:02:50,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:50,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:02:50,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:02:50,837 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-14 05:02:51,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:51,057 INFO L93 Difference]: Finished difference Result 132 states and 178 transitions. [2020-10-14 05:02:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:02:51,059 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-14 05:02:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:51,071 INFO L225 Difference]: With dead ends: 132 [2020-10-14 05:02:51,072 INFO L226 Difference]: Without dead ends: 56 [2020-10-14 05:02:51,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:02:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-14 05:02:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2020-10-14 05:02:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 05:02:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-10-14 05:02:51,130 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 37 [2020-10-14 05:02:51,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:51,131 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-10-14 05:02:51,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:02:51,131 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-10-14 05:02:51,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 05:02:51,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:51,134 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:02:51,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:02:51,134 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:51,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1536900415, now seen corresponding path program 1 times [2020-10-14 05:02:51,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:51,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126227236] [2020-10-14 05:02:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:51,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:51,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:52,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:52,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-14 05:02:52,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:52,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 943 [2020-10-14 05:02:52,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:52,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:02:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:52,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:02:52,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:52,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:52,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:52,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:52,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:52,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:52,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:52,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:52,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:52,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:52,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:52,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:52,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:02:52,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:52,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:02:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:52,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:52,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:52,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:52,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:52,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:02:52,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:52,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:52,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:02:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:02:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:52,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:52,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:52,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:52,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:02:52,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:52,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:02:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:02:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:52,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:52,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:52,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:02:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:52,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:02:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:02:52,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [126227236] [2020-10-14 05:02:52,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:52,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 05:02:52,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622146249] [2020-10-14 05:02:52,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:02:52,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:52,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:02:52,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:02:52,333 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 11 states. [2020-10-14 05:02:52,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:52,841 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2020-10-14 05:02:52,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:02:52,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 05:02:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:52,844 INFO L225 Difference]: With dead ends: 113 [2020-10-14 05:02:52,844 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:02:52,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:02:52,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:02:52,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 64. [2020-10-14 05:02:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 05:02:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2020-10-14 05:02:52,868 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 42 [2020-10-14 05:02:52,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:52,868 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2020-10-14 05:02:52,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:02:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2020-10-14 05:02:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 05:02:52,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:52,870 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:02:52,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:02:52,871 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:52,871 INFO L82 PathProgramCache]: Analyzing trace with hash 860400722, now seen corresponding path program 1 times [2020-10-14 05:02:52,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:52,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253058677] [2020-10-14 05:02:52,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:53,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:53,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 05:02:53,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:02:53,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 899 [2020-10-14 05:02:53,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:53,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:02:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:02:53,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:02:53,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:53,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:53,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:53,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:53,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:53,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:53,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:53,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:53,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:53,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:53,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:53,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:53,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:02:53,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:53,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:02:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:02:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:02:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:53,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:53,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:53,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:02:53,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:02:53,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:53,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:53,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:02:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:54,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-14 05:02:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:54,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:54,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:54,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:54,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:54,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:02:54,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:54,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:02:54,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:54,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:54,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 05:02:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:54,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:54,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:54,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:54,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:02:54,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:54,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:02:54,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:54,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 05:02:54,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253058677] [2020-10-14 05:02:54,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:02:54,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:02:54,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256797616] [2020-10-14 05:02:54,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:02:54,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:54,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:02:54,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:02:54,034 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 12 states. [2020-10-14 05:02:54,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:02:54,623 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2020-10-14 05:02:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:02:54,624 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-14 05:02:54,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:02:54,626 INFO L225 Difference]: With dead ends: 119 [2020-10-14 05:02:54,626 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 05:02:54,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:02:54,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 05:02:54,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2020-10-14 05:02:54,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 05:02:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-10-14 05:02:54,637 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 45 [2020-10-14 05:02:54,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:02:54,638 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-10-14 05:02:54,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:02:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-10-14 05:02:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:02:54,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:02:54,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:02:54,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:02:54,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:02:54,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:02:54,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1663200358, now seen corresponding path program 1 times [2020-10-14 05:02:54,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:02:54,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336217416] [2020-10-14 05:02:54,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:02:54,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:54,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:54,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:54,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:54,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:59,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:59,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-14 05:02:59,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:02:59,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 05:02:59,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:59,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:02:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:02:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:02:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:59,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:02:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:59,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:59,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:02:59,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:02:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:59,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:59,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:02:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:59,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:59,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:59,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:59,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:02:59,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:59,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:02:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:59,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:02:59,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:02:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:59,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:59,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:59,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:02:59,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:59,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:02:59,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:59,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:02:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:59,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:02:59,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:02:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:59,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:59,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:59,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:02:59,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:59,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:02:59,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:59,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:02:59,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:02:59,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:02:59,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:02:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:02:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:02:59,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:02:59,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:02:59,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:02:59,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:02:59,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:02:59,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:02:59,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:02:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:02:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:02:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:02:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:02:59,873 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:02:59,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336217416] [2020-10-14 05:02:59,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:02:59,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-14 05:02:59,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271461629] [2020-10-14 05:02:59,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:02:59,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:02:59,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:02:59,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:02:59,881 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 12 states. [2020-10-14 05:03:00,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:00,273 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2020-10-14 05:03:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 05:03:00,273 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 46 [2020-10-14 05:03:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:00,275 INFO L225 Difference]: With dead ends: 73 [2020-10-14 05:03:00,275 INFO L226 Difference]: Without dead ends: 69 [2020-10-14 05:03:00,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:03:00,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-14 05:03:00,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2020-10-14 05:03:00,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-14 05:03:00,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-14 05:03:00,297 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 46 [2020-10-14 05:03:00,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:00,298 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-14 05:03:00,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:03:00,298 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-14 05:03:00,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 05:03:00,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:00,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:00,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:03:00,300 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1968577046, now seen corresponding path program 1 times [2020-10-14 05:03:00,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:00,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616745211] [2020-10-14 05:03:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:00,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:00,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:02,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:02,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 05:03:02,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:02,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-14 05:03:02,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:02,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:03:02,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:03:02,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:03:02,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:02,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:02,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:02,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:02,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:02,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:02,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:02,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:02,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:02,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:02,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:02,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:02,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:02,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:02,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:03:02,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:02,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:03:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:02,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:03:02,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:02,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:02,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:02,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:02,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:02,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:02,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:03:02,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:02,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:02,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:03:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 05:03:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:03,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:03,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:03,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:03,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:03,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:03,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:03,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:03,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:03:03,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:03,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:03:03,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:03:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:03,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:03,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:03,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:03:03,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:03,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:03,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:03,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:03:03,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:03,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 24 [2020-10-14 05:03:03,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:03:03,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616745211] [2020-10-14 05:03:03,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:03,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 05:03:03,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927324901] [2020-10-14 05:03:03,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 05:03:03,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:03,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 05:03:03,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:03:03,085 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 12 states. [2020-10-14 05:03:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:03,646 INFO L93 Difference]: Finished difference Result 134 states and 170 transitions. [2020-10-14 05:03:03,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:03:03,646 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 47 [2020-10-14 05:03:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:03,648 INFO L225 Difference]: With dead ends: 134 [2020-10-14 05:03:03,648 INFO L226 Difference]: Without dead ends: 92 [2020-10-14 05:03:03,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:03:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-14 05:03:03,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 75. [2020-10-14 05:03:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-14 05:03:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2020-10-14 05:03:03,677 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 47 [2020-10-14 05:03:03,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:03,677 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2020-10-14 05:03:03,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 05:03:03,678 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2020-10-14 05:03:03,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:03:03,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:03,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:03,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:03:03,686 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:03,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:03,686 INFO L82 PathProgramCache]: Analyzing trace with hash 24505015, now seen corresponding path program 1 times [2020-10-14 05:03:03,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:03,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653150291] [2020-10-14 05:03:03,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:03,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:03,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:04,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:05,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:05,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:03:05,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:05,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1909 [2020-10-14 05:03:05,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:05,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:03:05,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:03:05,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:03:05,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:05,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:05,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:05,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:05,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:05,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:05,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:05,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:05,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:05,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:03:05,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:05,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:03:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:03:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:05,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:03:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:05,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:05,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:03:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:05,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-14 05:03:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:05,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:05,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:05,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:05,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:05,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:03:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:05,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:03:05,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:05,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:05,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:05,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:03:05,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:05,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:05,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:05,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:03:05,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:05,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:05,842 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 05:03:05,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653150291] [2020-10-14 05:03:05,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:05,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:03:05,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438651894] [2020-10-14 05:03:05,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:03:05,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:05,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:03:05,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:03:05,847 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand 13 states. [2020-10-14 05:03:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:06,466 INFO L93 Difference]: Finished difference Result 140 states and 178 transitions. [2020-10-14 05:03:06,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:03:06,467 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 50 [2020-10-14 05:03:06,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:06,469 INFO L225 Difference]: With dead ends: 140 [2020-10-14 05:03:06,469 INFO L226 Difference]: Without dead ends: 89 [2020-10-14 05:03:06,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:03:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-14 05:03:06,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 64. [2020-10-14 05:03:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-14 05:03:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2020-10-14 05:03:06,495 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 50 [2020-10-14 05:03:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:06,496 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2020-10-14 05:03:06,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:03:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2020-10-14 05:03:06,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 05:03:06,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:06,497 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:06,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:03:06,499 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:06,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1781197021, now seen corresponding path program 2 times [2020-10-14 05:03:06,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:06,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151077227] [2020-10-14 05:03:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:06,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:06,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:06,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 05:03:06,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:06,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-14 05:03:06,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:06,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:03:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 05:03:06,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 05:03:06,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:06,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:06,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:06,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:06,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:06,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:06,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:06,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:06,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:06,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:06,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:06,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:03:06,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:06,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:06,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:06,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:06,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:06,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:07,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:07,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:07,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:03:07,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:07,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:07,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:07,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:07,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:07,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:07,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:07,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:07,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:07,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:07,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:07,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:07,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:07,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:07,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:03:07,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:07,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:03:07,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:07,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:03:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:07,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:03:07,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:07,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151077227] [2020-10-14 05:03:07,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:07,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:03:07,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196576399] [2020-10-14 05:03:07,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:03:07,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:07,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:03:07,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:03:07,181 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand 14 states. [2020-10-14 05:03:07,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:07,854 INFO L93 Difference]: Finished difference Result 81 states and 94 transitions. [2020-10-14 05:03:07,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 05:03:07,855 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-14 05:03:07,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:07,857 INFO L225 Difference]: With dead ends: 81 [2020-10-14 05:03:07,857 INFO L226 Difference]: Without dead ends: 77 [2020-10-14 05:03:07,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:03:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-14 05:03:07,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2020-10-14 05:03:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 05:03:07,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-10-14 05:03:07,905 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 51 [2020-10-14 05:03:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:07,906 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-10-14 05:03:07,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:03:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-10-14 05:03:07,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:03:07,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:07,909 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:07,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:03:07,911 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:07,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:07,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1370713395, now seen corresponding path program 3 times [2020-10-14 05:03:07,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:07,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910322865] [2020-10-14 05:03:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:07,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:08,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:11,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:11,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:03:11,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:11,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3690 [2020-10-14 05:03:11,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:11,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:03:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:03:11,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 05:03:11,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:11,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:11,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:11,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:11,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:11,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:03:11,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:11,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:11,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:11,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:11,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:11,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:11,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:11,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:11,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:11,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:03:11,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:11,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:03:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:03:11,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:11,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:11,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:11,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:11,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:11,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 05:03:11,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:11,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:03:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:11,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:11,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:11,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:11,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:11,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:03:11,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:11,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:11,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:03:11,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:12,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:12,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:12,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:12,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:12,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:03:12,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:12,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:12,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:12,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:12,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:03:12,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910322865] [2020-10-14 05:03:12,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:12,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:03:12,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900411698] [2020-10-14 05:03:12,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:03:12,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:12,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:03:12,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:03:12,125 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 16 states. [2020-10-14 05:03:12,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:12,918 INFO L93 Difference]: Finished difference Result 116 states and 156 transitions. [2020-10-14 05:03:12,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 05:03:12,919 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2020-10-14 05:03:12,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:12,921 INFO L225 Difference]: With dead ends: 116 [2020-10-14 05:03:12,922 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 05:03:12,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:03:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 05:03:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 90. [2020-10-14 05:03:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 05:03:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 119 transitions. [2020-10-14 05:03:12,951 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 119 transitions. Word has length 52 [2020-10-14 05:03:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:12,953 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 119 transitions. [2020-10-14 05:03:12,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:03:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 119 transitions. [2020-10-14 05:03:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 05:03:12,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:12,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:12,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:03:12,955 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1530622877, now seen corresponding path program 4 times [2020-10-14 05:03:12,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:12,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507813770] [2020-10-14 05:03:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:12,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:13,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:13,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:13,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-14 05:03:13,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-14 05:03:13,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:13,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:03:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 05:03:13,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:13,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:13,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:13,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:13,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:13,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:13,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:13,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:13,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:13,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:13,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:13,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:13,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:13,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:13,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:13,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:13,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:13,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:14,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:14,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:14,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 05:03:14,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:14,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:14,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:14,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:14,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:14,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:14,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:14,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:03:14,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:14,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:14,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:14,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:14,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:14,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:03:14,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:03:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:14,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:14,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:03:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:14,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507813770] [2020-10-14 05:03:14,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:14,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:03:14,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530958134] [2020-10-14 05:03:14,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:03:14,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:14,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:03:14,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:03:14,654 INFO L87 Difference]: Start difference. First operand 90 states and 119 transitions. Second operand 16 states. [2020-10-14 05:03:15,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:15,669 INFO L93 Difference]: Finished difference Result 132 states and 183 transitions. [2020-10-14 05:03:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:03:15,670 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2020-10-14 05:03:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:15,672 INFO L225 Difference]: With dead ends: 132 [2020-10-14 05:03:15,672 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 05:03:15,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:03:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 05:03:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 113. [2020-10-14 05:03:15,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 05:03:15,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 157 transitions. [2020-10-14 05:03:15,697 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 157 transitions. Word has length 53 [2020-10-14 05:03:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:15,699 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 157 transitions. [2020-10-14 05:03:15,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:03:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 157 transitions. [2020-10-14 05:03:15,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:03:15,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:15,700 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:15,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:03:15,701 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:15,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:15,701 INFO L82 PathProgramCache]: Analyzing trace with hash 2102117773, now seen corresponding path program 5 times [2020-10-14 05:03:15,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:15,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308738887] [2020-10-14 05:03:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:15,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:15,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:16,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:16,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:03:16,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:16,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-14 05:03:16,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:16,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:03:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:16,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 05:03:16,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:16,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:16,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:16,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:16,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:16,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:16,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:16,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:16,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:16,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:16,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:16,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:16,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:16,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:16,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:16,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:16,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:16,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:16,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:16,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:16,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 05:03:16,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:16,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:16,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:16,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:16,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:16,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:16,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:16,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:03:16,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:16,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:16,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:16,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:16,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:16,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:16,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:16,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:03:16,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 05:03:16,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:16,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:03:16,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:16,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:03:16,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:17,378 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:17,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308738887] [2020-10-14 05:03:17,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:17,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:03:17,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256595558] [2020-10-14 05:03:17,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:03:17,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:17,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:03:17,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:03:17,381 INFO L87 Difference]: Start difference. First operand 113 states and 157 transitions. Second operand 17 states. [2020-10-14 05:03:18,641 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-14 05:03:18,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:18,969 INFO L93 Difference]: Finished difference Result 136 states and 191 transitions. [2020-10-14 05:03:18,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:03:18,970 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-14 05:03:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:18,971 INFO L225 Difference]: With dead ends: 136 [2020-10-14 05:03:18,972 INFO L226 Difference]: Without dead ends: 132 [2020-10-14 05:03:18,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:03:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-14 05:03:18,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 114. [2020-10-14 05:03:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 05:03:18,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 159 transitions. [2020-10-14 05:03:18,986 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 159 transitions. Word has length 54 [2020-10-14 05:03:18,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:18,987 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 159 transitions. [2020-10-14 05:03:18,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:03:18,987 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 159 transitions. [2020-10-14 05:03:18,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:03:18,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:18,988 INFO L422 BasicCegarLoop]: trace histogram [5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:18,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:03:18,989 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:18,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1247039069, now seen corresponding path program 6 times [2020-10-14 05:03:18,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:18,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430719363] [2020-10-14 05:03:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:19,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:19,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:19,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:19,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:03:19,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:19,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-10-14 05:03:19,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:19,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:19,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:03:19,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:19,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-14 05:03:19,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:19,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:19,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:19,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:19,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:19,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:19,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:19,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:19,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:19,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:19,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:19,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:19,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:19,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:19,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:19,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:19,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:19,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:19,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:19,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:19,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:19,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:19,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:19,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:19,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:19,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 05:03:19,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:19,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:19,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:20,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:20,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:20,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:20,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:03:20,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:20,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:20,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:20,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:20,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:20,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:03:20,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:20,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:03:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:20,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:03:20,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:20,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430719363] [2020-10-14 05:03:20,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:20,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:03:20,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483980002] [2020-10-14 05:03:20,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:03:20,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:20,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:03:20,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:03:20,556 INFO L87 Difference]: Start difference. First operand 114 states and 159 transitions. Second operand 18 states. [2020-10-14 05:03:22,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:22,090 INFO L93 Difference]: Finished difference Result 140 states and 199 transitions. [2020-10-14 05:03:22,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:03:22,094 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 55 [2020-10-14 05:03:22,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:22,095 INFO L225 Difference]: With dead ends: 140 [2020-10-14 05:03:22,096 INFO L226 Difference]: Without dead ends: 136 [2020-10-14 05:03:22,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:03:22,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-14 05:03:22,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 115. [2020-10-14 05:03:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 05:03:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2020-10-14 05:03:22,111 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 55 [2020-10-14 05:03:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:22,111 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2020-10-14 05:03:22,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:03:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2020-10-14 05:03:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:03:22,112 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:22,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:22,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:03:22,113 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash -407513290, now seen corresponding path program 2 times [2020-10-14 05:03:22,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:22,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885256591] [2020-10-14 05:03:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:22,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:22,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:26,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:26,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:03:26,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:26,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4376 [2020-10-14 05:03:26,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:26,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 05:03:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:03:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:26,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:26,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:26,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:26,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:26,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:26,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:26,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:26,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:26,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:26,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:26,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:26,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:26,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:26,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:26,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:26,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:26,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:26,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:26,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:26,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:26,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:26,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:26,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:26,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:26,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:26,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:26,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:26,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:26,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:26,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:26,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:26,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:26,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:03:26,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:26,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:03:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:26,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:03:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:26,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:26,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:26,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:26,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:26,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:03:26,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:26,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:26,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:03:26,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 05:03:26,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885256591] [2020-10-14 05:03:26,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:03:26,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-14 05:03:26,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950696656] [2020-10-14 05:03:26,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:03:26,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:26,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:03:26,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:03:26,669 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand 9 states. [2020-10-14 05:03:26,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:26,974 INFO L93 Difference]: Finished difference Result 147 states and 202 transitions. [2020-10-14 05:03:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:03:26,979 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-10-14 05:03:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:26,982 INFO L225 Difference]: With dead ends: 147 [2020-10-14 05:03:26,983 INFO L226 Difference]: Without dead ends: 119 [2020-10-14 05:03:26,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:03:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-14 05:03:27,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2020-10-14 05:03:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 05:03:27,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 163 transitions. [2020-10-14 05:03:27,007 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 163 transitions. Word has length 55 [2020-10-14 05:03:27,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:27,007 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 163 transitions. [2020-10-14 05:03:27,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:03:27,008 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 163 transitions. [2020-10-14 05:03:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-14 05:03:27,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:27,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:27,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:03:27,009 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:27,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:27,010 INFO L82 PathProgramCache]: Analyzing trace with hash -936081888, now seen corresponding path program 3 times [2020-10-14 05:03:27,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:27,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703544344] [2020-10-14 05:03:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:27,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:27,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:28,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:28,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1558 [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 05:03:28,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:28,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:28,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:28,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:28,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:28,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:28,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:28,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:28,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:28,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:28,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:28,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:28,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:28,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:28,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:28,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:28,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:28,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:28,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:03:28,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:28,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:28,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:03:28,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:28,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:03:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:28,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:28,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:28,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:28,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:03:28,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:28,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:28,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:03:28,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:28,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 05:03:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:28,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:28,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:28,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:28,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:28,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:28,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:03:28,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:03:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:28,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:28,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:28,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:28,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:28,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:28,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:28,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:28,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:03:28,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:28,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 05:03:28,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703544344] [2020-10-14 05:03:28,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:28,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 05:03:28,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752011983] [2020-10-14 05:03:28,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 05:03:28,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:28,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 05:03:28,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:03:28,810 INFO L87 Difference]: Start difference. First operand 117 states and 163 transitions. Second operand 14 states. [2020-10-14 05:03:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:29,553 INFO L93 Difference]: Finished difference Result 194 states and 264 transitions. [2020-10-14 05:03:29,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:03:29,553 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-14 05:03:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:29,555 INFO L225 Difference]: With dead ends: 194 [2020-10-14 05:03:29,555 INFO L226 Difference]: Without dead ends: 133 [2020-10-14 05:03:29,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:03:29,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-14 05:03:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2020-10-14 05:03:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-14 05:03:29,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 151 transitions. [2020-10-14 05:03:29,567 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 151 transitions. Word has length 55 [2020-10-14 05:03:29,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:29,568 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 151 transitions. [2020-10-14 05:03:29,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 05:03:29,568 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 151 transitions. [2020-10-14 05:03:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:03:29,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:29,569 INFO L422 BasicCegarLoop]: trace histogram [6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:29,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:03:29,570 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:29,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:29,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1991686067, now seen corresponding path program 7 times [2020-10-14 05:03:29,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:29,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950170035] [2020-10-14 05:03:29,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:29,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:29,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:29,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:03:29,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-14 05:03:29,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:29,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:03:29,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:29,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 05:03:29,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:30,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:30,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:30,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:30,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:30,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:30,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:30,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:30,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:30,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:30,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:30,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:30,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:30,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:30,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:30,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:30,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:30,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:30,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 05:03:30,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:30,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:30,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:30,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:30,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:30,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:30,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:30,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:30,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:30,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:30,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:30,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:03:30,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:30,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:03:30,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:30,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:03:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:30,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:03:30,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:30,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950170035] [2020-10-14 05:03:30,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:30,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:03:30,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310212901] [2020-10-14 05:03:30,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:03:30,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:30,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:03:30,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:03:30,813 INFO L87 Difference]: Start difference. First operand 111 states and 151 transitions. Second operand 19 states. [2020-10-14 05:03:32,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:32,655 INFO L93 Difference]: Finished difference Result 142 states and 198 transitions. [2020-10-14 05:03:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:03:32,656 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56 [2020-10-14 05:03:32,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:32,658 INFO L225 Difference]: With dead ends: 142 [2020-10-14 05:03:32,658 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 05:03:32,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:03:32,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 05:03:32,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 112. [2020-10-14 05:03:32,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-14 05:03:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 153 transitions. [2020-10-14 05:03:32,673 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 153 transitions. Word has length 56 [2020-10-14 05:03:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:32,673 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 153 transitions. [2020-10-14 05:03:32,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:03:32,674 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 153 transitions. [2020-10-14 05:03:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:03:32,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:32,675 INFO L422 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:32,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:03:32,675 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:32,676 INFO L82 PathProgramCache]: Analyzing trace with hash 694060771, now seen corresponding path program 8 times [2020-10-14 05:03:32,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:32,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556914967] [2020-10-14 05:03:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:32,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:33,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:33,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:03:33,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:33,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 05:03:33,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:33,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:03:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:33,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:03:33,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:33,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:33,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:33,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:33,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:33,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:33,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:33,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:33,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:33,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:33,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:33,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:33,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:33,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:33,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:33,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:33,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:33,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:33,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:33,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:33,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:33,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:03:33,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:33,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:33,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:33,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:33,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:33,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:33,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:33,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:33,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:33,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:33,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:33,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:33,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:33,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:33,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:33,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:03:33,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:33,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:03:33,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:33,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:03:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:33,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:03:33,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:34,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556914967] [2020-10-14 05:03:34,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:34,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:03:34,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446698866] [2020-10-14 05:03:34,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:03:34,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:34,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:03:34,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:03:34,075 INFO L87 Difference]: Start difference. First operand 112 states and 153 transitions. Second operand 20 states. [2020-10-14 05:03:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:35,980 INFO L93 Difference]: Finished difference Result 146 states and 206 transitions. [2020-10-14 05:03:35,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:03:35,980 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-14 05:03:35,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:35,982 INFO L225 Difference]: With dead ends: 146 [2020-10-14 05:03:35,983 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 05:03:35,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:03:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 05:03:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 113. [2020-10-14 05:03:36,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 05:03:36,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2020-10-14 05:03:36,001 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 57 [2020-10-14 05:03:36,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:36,001 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2020-10-14 05:03:36,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:03:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2020-10-14 05:03:36,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-14 05:03:36,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:36,003 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 05:03:36,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:03:36,003 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:36,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:36,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1011494620, now seen corresponding path program 9 times [2020-10-14 05:03:36,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:36,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119229696] [2020-10-14 05:03:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:36,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:36,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 809 [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:03:36,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:03:36,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:36,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:36,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:36,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:36,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:36,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:36,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:36,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:36,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:36,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:36,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:36,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:36,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:36,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:03:36,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:36,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:03:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:36,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:03:36,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:36,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:36,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:36,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:36,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:03:36,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:03:36,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:36,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:36,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:03:36,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:37,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 05:03:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:37,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:03:37,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:37,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:37,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 05:03:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:03:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:37,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:37,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:03:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:37,021 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:37,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119229696] [2020-10-14 05:03:37,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:37,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 05:03:37,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791837519] [2020-10-14 05:03:37,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:03:37,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:37,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:03:37,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:03:37,023 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 13 states. [2020-10-14 05:03:37,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:37,643 INFO L93 Difference]: Finished difference Result 199 states and 274 transitions. [2020-10-14 05:03:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:03:37,644 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-14 05:03:37,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:37,646 INFO L225 Difference]: With dead ends: 199 [2020-10-14 05:03:37,646 INFO L226 Difference]: Without dead ends: 129 [2020-10-14 05:03:37,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:03:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-14 05:03:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 107. [2020-10-14 05:03:37,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-14 05:03:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 143 transitions. [2020-10-14 05:03:37,658 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 143 transitions. Word has length 57 [2020-10-14 05:03:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:37,659 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 143 transitions. [2020-10-14 05:03:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:03:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 143 transitions. [2020-10-14 05:03:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:03:37,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:37,660 INFO L422 BasicCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:37,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:03:37,661 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:37,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1947133171, now seen corresponding path program 10 times [2020-10-14 05:03:37,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:37,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772783266] [2020-10-14 05:03:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:37,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:37,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:03:38,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 448 [2020-10-14 05:03:38,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:03:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:38,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:03:38,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:38,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:38,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:38,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:38,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:38,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:38,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:38,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:38,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:38,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:38,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:38,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:03:38,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:38,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:38,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:38,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:38,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:03:38,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:38,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:38,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:38,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:38,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:38,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:03:38,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 05:03:38,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:38,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:03:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:38,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:38,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:39,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772783266] [2020-10-14 05:03:39,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:39,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:03:39,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447550881] [2020-10-14 05:03:39,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:03:39,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:39,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:03:39,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:03:39,181 INFO L87 Difference]: Start difference. First operand 107 states and 143 transitions. Second operand 21 states. [2020-10-14 05:03:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:41,718 INFO L93 Difference]: Finished difference Result 144 states and 197 transitions. [2020-10-14 05:03:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:03:41,724 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-14 05:03:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:41,725 INFO L225 Difference]: With dead ends: 144 [2020-10-14 05:03:41,725 INFO L226 Difference]: Without dead ends: 140 [2020-10-14 05:03:41,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=119, Invalid=1071, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:03:41,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-14 05:03:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 108. [2020-10-14 05:03:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-14 05:03:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 145 transitions. [2020-10-14 05:03:41,739 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 145 transitions. Word has length 58 [2020-10-14 05:03:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:41,740 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 145 transitions. [2020-10-14 05:03:41,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:03:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 145 transitions. [2020-10-14 05:03:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:03:41,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:41,741 INFO L422 BasicCegarLoop]: trace histogram [9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:41,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:03:41,742 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:41,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2075200547, now seen corresponding path program 11 times [2020-10-14 05:03:41,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:41,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555046470] [2020-10-14 05:03:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:41,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:03:42,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:42,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 05:03:42,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:03:42,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:42,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:03:42,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:42,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:42,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:42,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:42,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:42,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:42,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:42,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 05:03:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:42,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 05:03:42,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:42,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:42,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:03:42,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:42,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:42,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:42,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:42,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:42,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:42,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:42,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 05:03:42,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:42,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:03:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:42,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:03:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:03:43,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555046470] [2020-10-14 05:03:43,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:43,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:03:43,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792673443] [2020-10-14 05:03:43,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:03:43,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:43,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:03:43,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:03:43,255 INFO L87 Difference]: Start difference. First operand 108 states and 145 transitions. Second operand 22 states. [2020-10-14 05:03:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:46,053 INFO L93 Difference]: Finished difference Result 148 states and 204 transitions. [2020-10-14 05:03:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:03:46,056 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 59 [2020-10-14 05:03:46,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:46,059 INFO L225 Difference]: With dead ends: 148 [2020-10-14 05:03:46,059 INFO L226 Difference]: Without dead ends: 144 [2020-10-14 05:03:46,060 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=134, Invalid=1198, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:03:46,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-14 05:03:46,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 109. [2020-10-14 05:03:46,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 05:03:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2020-10-14 05:03:46,082 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 59 [2020-10-14 05:03:46,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:46,083 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2020-10-14 05:03:46,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:03:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2020-10-14 05:03:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-14 05:03:46,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:46,085 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 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] [2020-10-14 05:03:46,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:03:46,086 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:46,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:46,086 INFO L82 PathProgramCache]: Analyzing trace with hash 402935559, now seen corresponding path program 4 times [2020-10-14 05:03:46,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:46,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143142329] [2020-10-14 05:03:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 443 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 05:03:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:46,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:46,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:46,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:46,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:46,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:46,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:46,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:46,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:46,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:46,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:46,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:46,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:46,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:46,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:03:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:46,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:46,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:03:46,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:46,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:03:46,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:46,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:46,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:03:46,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:03:46,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:03:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:46,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:46,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:46,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:03:46,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:46,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:46,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:46,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:03:46,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:46,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:46,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:46,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:46,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:46,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:03:46,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:46,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:46,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:46,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:46,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:46,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:03:47,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143142329] [2020-10-14 05:03:47,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:47,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:03:47,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725106730] [2020-10-14 05:03:47,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:03:47,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:47,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:03:47,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:03:47,010 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand 16 states. [2020-10-14 05:03:48,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:48,087 INFO L93 Difference]: Finished difference Result 127 states and 167 transitions. [2020-10-14 05:03:48,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 05:03:48,088 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 59 [2020-10-14 05:03:48,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:48,090 INFO L225 Difference]: With dead ends: 127 [2020-10-14 05:03:48,090 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 05:03:48,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:03:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 05:03:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2020-10-14 05:03:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-14 05:03:48,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 146 transitions. [2020-10-14 05:03:48,104 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 146 transitions. Word has length 59 [2020-10-14 05:03:48,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:48,104 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 146 transitions. [2020-10-14 05:03:48,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:03:48,104 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 146 transitions. [2020-10-14 05:03:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:03:48,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:48,106 INFO L422 BasicCegarLoop]: trace histogram [10, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:48,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:03:48,106 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:48,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:48,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2081473075, now seen corresponding path program 12 times [2020-10-14 05:03:48,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:48,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1339344152] [2020-10-14 05:03:48,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:48,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:48,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:48,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:48,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:03:48,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:48,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-14 05:03:48,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:48,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:03:48,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 05:03:48,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 05:03:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:48,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:48,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:48,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:48,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:48,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:03:48,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:48,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:48,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:48,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:48,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:48,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:48,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:48,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:03:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:48,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:48,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:48,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:03:48,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:48,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 05:03:48,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:48,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:03:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:48,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:03:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:03:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:48,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:48,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:48,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:48,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:03:48,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:48,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:48,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:03:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:48,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:48,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:48,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:03:48,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:03:48,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:48,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:03:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-14 05:03:48,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1339344152] [2020-10-14 05:03:48,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:48,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 05:03:48,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327376550] [2020-10-14 05:03:48,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 05:03:48,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 05:03:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 05:03:48,892 INFO L87 Difference]: Start difference. First operand 109 states and 146 transitions. Second operand 17 states. [2020-10-14 05:03:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:49,773 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2020-10-14 05:03:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 05:03:49,774 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2020-10-14 05:03:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:49,776 INFO L225 Difference]: With dead ends: 126 [2020-10-14 05:03:49,776 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 05:03:49,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:03:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 05:03:49,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 97. [2020-10-14 05:03:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 05:03:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 123 transitions. [2020-10-14 05:03:49,794 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 123 transitions. Word has length 60 [2020-10-14 05:03:49,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:49,794 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 123 transitions. [2020-10-14 05:03:49,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 05:03:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 123 transitions. [2020-10-14 05:03:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:03:49,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:49,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:49,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 05:03:49,796 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:49,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:49,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1912887145, now seen corresponding path program 5 times [2020-10-14 05:03:49,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:49,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374350752] [2020-10-14 05:03:49,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:49,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:49,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:51,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:03:51,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:51,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1813 [2020-10-14 05:03:51,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:51,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:03:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:03:51,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 05:03:51,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:51,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:51,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:51,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:51,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:51,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:51,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:51,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:51,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:51,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:51,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:51,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:51,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:51,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:51,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:03:51,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:51,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:51,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:03:51,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:51,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:03:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:51,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:51,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:03:51,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:51,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:03:51,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:51,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:51,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:51,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:03:51,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:03:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:51,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:51,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:51,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:03:51,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:51,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:51,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:03:51,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:51,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:03:51,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:03:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:51,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:51,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:03:51,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:51,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:03:51,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:51,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:03:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:51,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:03:51,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:03:52,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374350752] [2020-10-14 05:03:52,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:52,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:03:52,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089269495] [2020-10-14 05:03:52,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:03:52,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:52,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:03:52,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:03:52,033 INFO L87 Difference]: Start difference. First operand 97 states and 123 transitions. Second operand 18 states. [2020-10-14 05:03:53,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:53,140 INFO L93 Difference]: Finished difference Result 146 states and 206 transitions. [2020-10-14 05:03:53,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:03:53,140 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 60 [2020-10-14 05:03:53,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:53,142 INFO L225 Difference]: With dead ends: 146 [2020-10-14 05:03:53,142 INFO L226 Difference]: Without dead ends: 142 [2020-10-14 05:03:53,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:03:53,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-14 05:03:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 122. [2020-10-14 05:03:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 05:03:53,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 171 transitions. [2020-10-14 05:03:53,158 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 171 transitions. Word has length 60 [2020-10-14 05:03:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:53,159 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 171 transitions. [2020-10-14 05:03:53,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:03:53,159 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 171 transitions. [2020-10-14 05:03:53,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 05:03:53,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:53,160 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:53,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 05:03:53,161 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:53,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:53,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1476746055, now seen corresponding path program 6 times [2020-10-14 05:03:53,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:53,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525906677] [2020-10-14 05:03:53,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:53,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:53,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:53,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 05:03:53,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-10-14 05:03:53,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:53,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:03:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:03:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-14 05:03:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:53,932 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2020-10-14 05:03:54,301 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-14 05:03:54,492 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 44 [2020-10-14 05:03:54,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:54,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:54,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:54,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:54,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:54,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:54,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:54,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:54,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:54,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:54,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:54,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:03:54,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:54,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:54,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:03:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:54,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:54,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:03:54,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:54,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-14 05:03:54,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:54,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:03:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:03:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:55,032 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-10-14 05:03:55,245 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 37 [2020-10-14 05:03:55,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:03:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:55,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:55,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:03:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:03:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:55,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:03:55,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:03:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:03:55,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525906677] [2020-10-14 05:03:55,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:03:55,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:03:55,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948740667] [2020-10-14 05:03:55,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:03:55,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:03:55,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:03:55,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:03:55,861 INFO L87 Difference]: Start difference. First operand 122 states and 171 transitions. Second operand 18 states. [2020-10-14 05:03:57,348 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-14 05:03:57,693 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-14 05:03:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:03:57,822 INFO L93 Difference]: Finished difference Result 166 states and 243 transitions. [2020-10-14 05:03:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 05:03:57,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-14 05:03:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:03:57,827 INFO L225 Difference]: With dead ends: 166 [2020-10-14 05:03:57,827 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 05:03:57,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=89, Invalid=667, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:03:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 05:03:57,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 145. [2020-10-14 05:03:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 05:03:57,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 212 transitions. [2020-10-14 05:03:57,849 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 212 transitions. Word has length 61 [2020-10-14 05:03:57,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:03:57,850 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 212 transitions. [2020-10-14 05:03:57,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:03:57,850 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 212 transitions. [2020-10-14 05:03:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-14 05:03:57,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:03:57,852 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:03:57,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 05:03:57,852 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:03:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:03:57,852 INFO L82 PathProgramCache]: Analyzing trace with hash 841274153, now seen corresponding path program 7 times [2020-10-14 05:03:57,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:03:57,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150051379] [2020-10-14 05:03:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:03:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:57,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:58,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:58,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:58,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 05:03:58,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:03:58,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-14 05:03:58,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:58,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:03:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:03:58,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:03:58,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:59,118 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-10-14 05:03:59,615 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 63 [2020-10-14 05:03:59,969 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2020-10-14 05:03:59,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:03:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:59,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:59,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:59,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:59,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:03:59,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:03:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:03:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:03:59,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:03:59,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:03:59,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:03:59,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:03:59,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:03:59,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:03:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:03:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:03:59,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:03:59,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:00,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:00,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:00,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:00,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:00,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 05:04:00,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:00,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:00,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:00,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:04:00,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:00,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:04:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:00,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:00,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:00,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:04:00,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:00,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:04:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:00,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:00,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:04:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:00,937 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 39 [2020-10-14 05:04:01,180 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2020-10-14 05:04:01,485 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 64 [2020-10-14 05:04:01,770 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2020-10-14 05:04:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:04:01,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150051379] [2020-10-14 05:04:01,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:01,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 05:04:01,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403185052] [2020-10-14 05:04:01,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 05:04:01,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:01,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 05:04:01,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2020-10-14 05:04:01,797 INFO L87 Difference]: Start difference. First operand 145 states and 212 transitions. Second operand 19 states. [2020-10-14 05:04:03,813 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-14 05:04:03,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:03,946 INFO L93 Difference]: Finished difference Result 170 states and 252 transitions. [2020-10-14 05:04:03,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:04:03,947 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 62 [2020-10-14 05:04:03,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:03,948 INFO L225 Difference]: With dead ends: 170 [2020-10-14 05:04:03,948 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 05:04:03,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:04:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 05:04:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-10-14 05:04:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-14 05:04:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 214 transitions. [2020-10-14 05:04:03,968 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 214 transitions. Word has length 62 [2020-10-14 05:04:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:03,969 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 214 transitions. [2020-10-14 05:04:03,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 05:04:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 214 transitions. [2020-10-14 05:04:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 05:04:03,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:03,971 INFO L422 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:03,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 05:04:03,971 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:03,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1678485625, now seen corresponding path program 8 times [2020-10-14 05:04:03,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:03,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079148949] [2020-10-14 05:04:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:04,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:05,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 05:04:05,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:05,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1086 [2020-10-14 05:04:05,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:05,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:04:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:04:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 05:04:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:05,370 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 40 [2020-10-14 05:04:05,669 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 52 [2020-10-14 05:04:05,912 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 41 [2020-10-14 05:04:05,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:05,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:05,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:05,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:05,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:05,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:05,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:05,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:05,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:05,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:05,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:05,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:05,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:05,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:05,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:05,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:05,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:05,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:06,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:06,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:06,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:06,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 05:04:06,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:06,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:06,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:04:06,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:06,270 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 22 [2020-10-14 05:04:06,545 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-10-14 05:04:06,818 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 39 [2020-10-14 05:04:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:04:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:06,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:04:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:06,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:06,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:04:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:06,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:06,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:06,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:04:06,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:06,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:04:06,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:06,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:04:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:06,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:04:06,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:07,376 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-14 05:04:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:04:07,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079148949] [2020-10-14 05:04:07,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:07,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:04:07,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918640145] [2020-10-14 05:04:07,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:04:07,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:07,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:04:07,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:04:07,686 INFO L87 Difference]: Start difference. First operand 146 states and 214 transitions. Second operand 20 states. [2020-10-14 05:04:08,281 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-14 05:04:09,486 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2020-10-14 05:04:10,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:10,033 INFO L93 Difference]: Finished difference Result 174 states and 261 transitions. [2020-10-14 05:04:10,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:04:10,034 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 63 [2020-10-14 05:04:10,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:10,036 INFO L225 Difference]: With dead ends: 174 [2020-10-14 05:04:10,036 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 05:04:10,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:04:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 05:04:10,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 147. [2020-10-14 05:04:10,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 05:04:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 216 transitions. [2020-10-14 05:04:10,058 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 216 transitions. Word has length 63 [2020-10-14 05:04:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:10,058 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 216 transitions. [2020-10-14 05:04:10,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:04:10,058 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 216 transitions. [2020-10-14 05:04:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 05:04:10,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:10,060 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 05:04:10,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 05:04:10,061 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:10,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:10,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1132902468, now seen corresponding path program 9 times [2020-10-14 05:04:10,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:10,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63843189] [2020-10-14 05:04:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:10,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:10,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:11,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:11,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 05:04:11,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:11,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1266 [2020-10-14 05:04:11,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:11,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:04:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:04:11,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 05:04:11,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:11,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:11,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:11,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:11,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:11,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:11,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:11,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:11,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:11,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:11,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:04:11,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:04:11,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:11,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:11,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:04:11,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:11,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:04:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:11,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:11,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:11,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:11,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:11,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:04:11,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:11,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:04:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:11,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:04:11,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:11,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:04:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:11,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:11,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:11,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:11,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:11,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:11,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:11,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:04:11,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:11,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 05:04:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:11,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:11,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:11,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:04:11,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:11,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:04:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 05:04:11,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63843189] [2020-10-14 05:04:11,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:11,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 05:04:11,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038562290] [2020-10-14 05:04:11,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 05:04:11,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:11,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 05:04:11,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:04:11,604 INFO L87 Difference]: Start difference. First operand 147 states and 216 transitions. Second operand 16 states. [2020-10-14 05:04:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:12,631 INFO L93 Difference]: Finished difference Result 238 states and 338 transitions. [2020-10-14 05:04:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:04:12,631 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-10-14 05:04:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:12,633 INFO L225 Difference]: With dead ends: 238 [2020-10-14 05:04:12,633 INFO L226 Difference]: Without dead ends: 167 [2020-10-14 05:04:12,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2020-10-14 05:04:12,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-14 05:04:12,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 141. [2020-10-14 05:04:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-14 05:04:12,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 203 transitions. [2020-10-14 05:04:12,658 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 203 transitions. Word has length 63 [2020-10-14 05:04:12,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:12,658 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 203 transitions. [2020-10-14 05:04:12,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 05:04:12,659 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 203 transitions. [2020-10-14 05:04:12,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 05:04:12,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:12,660 INFO L422 BasicCegarLoop]: trace histogram [7, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:12,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 05:04:12,661 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1813339881, now seen corresponding path program 10 times [2020-10-14 05:04:12,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:12,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429252848] [2020-10-14 05:04:12,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:12,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:13,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:13,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 05:04:13,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:13,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 778 [2020-10-14 05:04:13,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:13,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:04:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:04:13,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-14 05:04:13,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:13,862 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 75 [2020-10-14 05:04:14,369 WARN L193 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 75 [2020-10-14 05:04:14,808 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2020-10-14 05:04:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:14,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:14,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:14,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:14,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:14,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:14,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:14,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:14,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:14,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:14,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:14,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:14,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:14,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:14,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:14,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:04:14,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:14,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:14,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:14,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:14,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:14,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:14,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:14,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 05:04:14,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:14,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:04:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:15,340 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 29 [2020-10-14 05:04:15,534 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 28 [2020-10-14 05:04:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:04:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:15,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:15,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:15,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:15,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:15,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:04:15,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:15,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:15,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:15,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:15,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:04:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:15,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:15,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:15,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:04:15,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:15,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 05:04:15,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:15,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:04:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:15,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:04:15,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:16,225 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-10-14 05:04:16,433 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 43 [2020-10-14 05:04:16,654 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 47 [2020-10-14 05:04:16,888 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-10-14 05:04:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:04:17,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429252848] [2020-10-14 05:04:17,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:17,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:04:17,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806558747] [2020-10-14 05:04:17,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:04:17,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:17,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:04:17,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:04:17,222 INFO L87 Difference]: Start difference. First operand 141 states and 203 transitions. Second operand 21 states. [2020-10-14 05:04:19,478 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2020-10-14 05:04:19,952 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 05:04:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:20,128 INFO L93 Difference]: Finished difference Result 172 states and 256 transitions. [2020-10-14 05:04:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:04:20,129 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-10-14 05:04:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:20,130 INFO L225 Difference]: With dead ends: 172 [2020-10-14 05:04:20,131 INFO L226 Difference]: Without dead ends: 168 [2020-10-14 05:04:20,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=113, Invalid=1009, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:04:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-14 05:04:20,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 142. [2020-10-14 05:04:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 05:04:20,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 205 transitions. [2020-10-14 05:04:20,154 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 205 transitions. Word has length 64 [2020-10-14 05:04:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:20,154 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 205 transitions. [2020-10-14 05:04:20,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:04:20,155 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 205 transitions. [2020-10-14 05:04:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 05:04:20,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:20,157 INFO L422 BasicCegarLoop]: trace histogram [8, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:20,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 05:04:20,157 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:20,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:20,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1609219129, now seen corresponding path program 11 times [2020-10-14 05:04:20,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:20,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989309624] [2020-10-14 05:04:20,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:20,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:21,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:21,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:04:21,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:21,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1549 [2020-10-14 05:04:21,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:21,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:04:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:04:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 05:04:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:22,307 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2020-10-14 05:04:22,852 WARN L193 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 89 [2020-10-14 05:04:23,149 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 68 [2020-10-14 05:04:23,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:23,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:23,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:23,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:23,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:23,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:23,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:23,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:23,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:23,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:23,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:23,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:23,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:23,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:04:23,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:23,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:23,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:23,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:23,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:23,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:23,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:23,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:23,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 05:04:23,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:23,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:23,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:04:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:23,831 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 45 [2020-10-14 05:04:24,009 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 44 [2020-10-14 05:04:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:04:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:24,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:24,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:24,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:24,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:24,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:04:24,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:24,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:24,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:24,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:04:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:24,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:24,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:04:24,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:24,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-14 05:04:24,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:24,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:04:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:24,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:04:24,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:04:25,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989309624] [2020-10-14 05:04:25,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:25,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 05:04:25,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738490846] [2020-10-14 05:04:25,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 05:04:25,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:25,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 05:04:25,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 05:04:25,120 INFO L87 Difference]: Start difference. First operand 142 states and 205 transitions. Second operand 22 states. [2020-10-14 05:04:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:28,182 INFO L93 Difference]: Finished difference Result 176 states and 265 transitions. [2020-10-14 05:04:28,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:04:28,182 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-14 05:04:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:28,184 INFO L225 Difference]: With dead ends: 176 [2020-10-14 05:04:28,185 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 05:04:28,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:04:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 05:04:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 143. [2020-10-14 05:04:28,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-14 05:04:28,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 207 transitions. [2020-10-14 05:04:28,208 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 207 transitions. Word has length 65 [2020-10-14 05:04:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:28,208 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 207 transitions. [2020-10-14 05:04:28,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 05:04:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 207 transitions. [2020-10-14 05:04:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 05:04:28,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:28,210 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:28,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 05:04:28,211 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:28,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:28,211 INFO L82 PathProgramCache]: Analyzing trace with hash -358704402, now seen corresponding path program 12 times [2020-10-14 05:04:28,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:28,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342317630] [2020-10-14 05:04:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:28,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:28,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:28,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:29,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:29,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:04:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:04:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1703 [2020-10-14 05:04:29,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:29,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:04:29,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:04:29,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 05:04:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:04:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:29,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:29,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:29,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:29,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:29,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:29,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:29,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:29,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:29,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:29,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:29,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:29,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:29,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:29,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:04:29,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:29,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:04:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:29,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:04:29,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:30,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:30,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:30,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:04:30,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:30,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 05:04:30,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:30,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:30,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:04:30,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:30,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:04:30,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:30,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-14 05:04:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:30,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:30,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:30,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:30,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:30,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:30,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:30,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:04:30,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:30,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:30,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-14 05:04:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:30,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:30,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:30,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:04:30,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:30,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:30,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:30,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:04:30,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:30,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 05:04:30,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342317630] [2020-10-14 05:04:30,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:30,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 05:04:30,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818395005] [2020-10-14 05:04:30,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 05:04:30,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:30,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 05:04:30,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-14 05:04:30,169 INFO L87 Difference]: Start difference. First operand 143 states and 207 transitions. Second operand 15 states. [2020-10-14 05:04:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:30,776 INFO L93 Difference]: Finished difference Result 230 states and 330 transitions. [2020-10-14 05:04:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:04:30,777 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-10-14 05:04:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:30,778 INFO L225 Difference]: With dead ends: 230 [2020-10-14 05:04:30,779 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 05:04:30,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:04:30,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 05:04:30,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 137. [2020-10-14 05:04:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-14 05:04:30,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 194 transitions. [2020-10-14 05:04:30,800 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 194 transitions. Word has length 65 [2020-10-14 05:04:30,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:30,801 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 194 transitions. [2020-10-14 05:04:30,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 05:04:30,801 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 194 transitions. [2020-10-14 05:04:30,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 05:04:30,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:30,802 INFO L422 BasicCegarLoop]: trace histogram [9, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:30,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 05:04:30,803 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:30,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:30,803 INFO L82 PathProgramCache]: Analyzing trace with hash -334366039, now seen corresponding path program 13 times [2020-10-14 05:04:30,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:30,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954357291] [2020-10-14 05:04:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:30,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:30,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:31,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:31,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 05:04:31,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:31,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-14 05:04:31,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:31,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:04:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:04:31,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:04:31,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:31,708 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 36 [2020-10-14 05:04:32,028 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 41 [2020-10-14 05:04:32,239 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 29 [2020-10-14 05:04:32,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:32,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:32,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:32,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:32,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:32,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:32,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:32,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:32,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:32,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:32,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:32,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:32,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:32,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:32,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:32,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:32,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:32,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:32,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 05:04:32,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:32,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:04:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:32,668 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 47 [2020-10-14 05:04:32,866 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-10-14 05:04:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:04:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:32,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:32,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:32,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:32,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:32,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:04:32,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:32,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:32,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:32,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:32,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:04:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:32,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:32,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:04:32,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:32,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:04:32,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:32,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 05:04:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:32,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:04:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:33,974 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-14 05:04:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:04:34,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954357291] [2020-10-14 05:04:34,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:34,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 05:04:34,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301635232] [2020-10-14 05:04:34,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 05:04:34,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:34,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 05:04:34,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:04:34,166 INFO L87 Difference]: Start difference. First operand 137 states and 194 transitions. Second operand 23 states. [2020-10-14 05:04:34,938 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-14 05:04:36,917 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-14 05:04:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:37,508 INFO L93 Difference]: Finished difference Result 174 states and 256 transitions. [2020-10-14 05:04:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 05:04:37,509 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 66 [2020-10-14 05:04:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:37,511 INFO L225 Difference]: With dead ends: 174 [2020-10-14 05:04:37,511 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 05:04:37,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 05:04:37,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 05:04:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 138. [2020-10-14 05:04:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-14 05:04:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 196 transitions. [2020-10-14 05:04:37,536 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 196 transitions. Word has length 66 [2020-10-14 05:04:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:37,537 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 196 transitions. [2020-10-14 05:04:37,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 05:04:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 196 transitions. [2020-10-14 05:04:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 05:04:37,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:37,539 INFO L422 BasicCegarLoop]: trace histogram [10, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:37,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 05:04:37,539 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:37,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:37,539 INFO L82 PathProgramCache]: Analyzing trace with hash 531374087, now seen corresponding path program 14 times [2020-10-14 05:04:37,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:37,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682110179] [2020-10-14 05:04:37,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:37,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:37,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:38,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 915 [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:04:38,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 05:04:38,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:38,989 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 73 [2020-10-14 05:04:39,497 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 81 [2020-10-14 05:04:39,829 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 48 [2020-10-14 05:04:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:39,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:39,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:39,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:39,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:39,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:39,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:39,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:39,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:39,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:39,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:39,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:39,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:39,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:39,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:39,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:39,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:39,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:39,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 05:04:39,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:39,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:39,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:04:39,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:40,333 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 43 [2020-10-14 05:04:40,554 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 42 [2020-10-14 05:04:40,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:04:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:40,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:40,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:40,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:40,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:40,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:04:40,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:40,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:40,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:04:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:40,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:40,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:40,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 05:04:40,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:04:40,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:40,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 05:04:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:40,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:04:40,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:41,529 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-14 05:04:41,769 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-14 05:04:42,017 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2020-10-14 05:04:42,217 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-14 05:04:42,407 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2020-10-14 05:04:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:04:42,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682110179] [2020-10-14 05:04:42,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:42,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 05:04:42,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360479046] [2020-10-14 05:04:42,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 05:04:42,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:42,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 05:04:42,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 05:04:42,449 INFO L87 Difference]: Start difference. First operand 138 states and 196 transitions. Second operand 24 states. [2020-10-14 05:04:43,196 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-14 05:04:46,082 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-14 05:04:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:46,291 INFO L93 Difference]: Finished difference Result 178 states and 264 transitions. [2020-10-14 05:04:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:04:46,291 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 67 [2020-10-14 05:04:46,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:46,293 INFO L225 Difference]: With dead ends: 178 [2020-10-14 05:04:46,293 INFO L226 Difference]: Without dead ends: 174 [2020-10-14 05:04:46,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2020-10-14 05:04:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-14 05:04:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-14 05:04:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 05:04:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2020-10-14 05:04:46,320 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 67 [2020-10-14 05:04:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:46,321 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2020-10-14 05:04:46,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 05:04:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2020-10-14 05:04:46,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 05:04:46,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:46,322 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2020-10-14 05:04:46,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 05:04:46,323 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:46,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:46,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1441819211, now seen corresponding path program 15 times [2020-10-14 05:04:46,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:46,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774923743] [2020-10-14 05:04:46,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:46,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:46,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-14 05:04:46,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-14 05:04:46,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:46,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:04:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 05:04:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 05:04:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:47,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:47,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:47,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:47,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:47,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:47,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:47,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:47,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:47,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:47,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:47,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:47,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:47,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:47,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:47,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:04:47,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:47,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:04:47,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:47,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:47,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:47,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:47,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:04:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:47,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:47,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:04:47,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:47,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 05:04:47,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:47,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:04:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:47,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:04:47,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:47,485 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-14 05:04:47,668 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2020-10-14 05:04:47,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:04:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:47,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:47,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:47,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:47,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:47,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:04:47,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:47,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:47,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 05:04:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:47,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:47,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 05:04:47,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:47,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:04:47,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:47,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:47,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:47,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:04:47,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:04:47,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774923743] [2020-10-14 05:04:47,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:47,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 05:04:47,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678332749] [2020-10-14 05:04:47,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 05:04:47,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:47,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 05:04:47,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 05:04:47,993 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand 18 states. [2020-10-14 05:04:48,720 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-10-14 05:04:49,059 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2020-10-14 05:04:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:49,983 INFO L93 Difference]: Finished difference Result 157 states and 220 transitions. [2020-10-14 05:04:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 05:04:49,984 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 67 [2020-10-14 05:04:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:49,985 INFO L225 Difference]: With dead ends: 157 [2020-10-14 05:04:49,985 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 05:04:49,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:04:49,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 05:04:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 139. [2020-10-14 05:04:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-14 05:04:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 197 transitions. [2020-10-14 05:04:50,011 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 197 transitions. Word has length 67 [2020-10-14 05:04:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:50,011 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 197 transitions. [2020-10-14 05:04:50,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 05:04:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 197 transitions. [2020-10-14 05:04:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 05:04:50,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:50,013 INFO L422 BasicCegarLoop]: trace histogram [11, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:04:50,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 05:04:50,014 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1599514217, now seen corresponding path program 16 times [2020-10-14 05:04:50,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:50,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345731804] [2020-10-14 05:04:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:51,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1377 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:04:51,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:51,770 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 57 [2020-10-14 05:04:52,062 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 60 [2020-10-14 05:04:52,384 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 55 [2020-10-14 05:04:52,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:04:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:52,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:52,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:52,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:04:52,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:52,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:04:52,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:52,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:52,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:52,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:04:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:52,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:52,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:52,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:04:52,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:52,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:04:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:52,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:52,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:04:52,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:52,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:04:52,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:52,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:52,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:04:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:52,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:04:52,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:52,829 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-10-14 05:04:53,011 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-10-14 05:04:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:04:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:04:53,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:04:53,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:04:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:04:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:04:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:04:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:53,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:04:53,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:04:53,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:04:53,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 05:04:53,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:04:53,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:04:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:04:53,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:04:53,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:04:53,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:04:53,601 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2020-10-14 05:04:54,066 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-10-14 05:04:54,281 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2020-10-14 05:04:54,475 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 58 [2020-10-14 05:04:54,662 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-10-14 05:04:54,924 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-14 05:04:55,121 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-10-14 05:04:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:04:55,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345731804] [2020-10-14 05:04:55,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:04:55,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:04:55,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983345699] [2020-10-14 05:04:55,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:04:55,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:04:55,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:04:55,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:04:55,163 INFO L87 Difference]: Start difference. First operand 139 states and 197 transitions. Second operand 25 states. [2020-10-14 05:04:58,776 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-14 05:04:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:04:59,548 INFO L93 Difference]: Finished difference Result 182 states and 271 transitions. [2020-10-14 05:04:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 05:04:59,549 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 68 [2020-10-14 05:04:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:04:59,550 INFO L225 Difference]: With dead ends: 182 [2020-10-14 05:04:59,551 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 05:04:59,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=145, Invalid=1577, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:04:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 05:04:59,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 140. [2020-10-14 05:04:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 05:04:59,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 199 transitions. [2020-10-14 05:04:59,580 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 199 transitions. Word has length 68 [2020-10-14 05:04:59,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:04:59,581 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 199 transitions. [2020-10-14 05:04:59,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:04:59,581 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 199 transitions. [2020-10-14 05:04:59,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 05:04:59,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:04:59,582 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 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] [2020-10-14 05:04:59,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 05:04:59,582 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:04:59,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:04:59,583 INFO L82 PathProgramCache]: Analyzing trace with hash 560064123, now seen corresponding path program 17 times [2020-10-14 05:04:59,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:04:59,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052125064] [2020-10-14 05:04:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:04:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:04:59,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:59,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:04:59,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 05:05:02,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 05:05:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2638 [2020-10-14 05:05:02,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 05:05:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 05:05:02,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 05:05:02,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:02,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:02,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:02,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:02,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:02,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:05:02,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:02,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:05:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:02,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:05:02,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:02,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 05:05:02,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 05:05:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:05:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:02,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:02,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:05:02,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:05:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:02,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:05:02,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 05:05:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:02,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:02,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:05:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 05:05:02,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052125064] [2020-10-14 05:05:02,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:02,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:05:02,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898896995] [2020-10-14 05:05:02,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:05:02,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:02,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:05:02,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:05:02,701 INFO L87 Difference]: Start difference. First operand 140 states and 199 transitions. Second operand 20 states. [2020-10-14 05:05:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:04,334 INFO L93 Difference]: Finished difference Result 205 states and 317 transitions. [2020-10-14 05:05:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 05:05:04,335 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2020-10-14 05:05:04,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:04,337 INFO L225 Difference]: With dead ends: 205 [2020-10-14 05:05:04,338 INFO L226 Difference]: Without dead ends: 201 [2020-10-14 05:05:04,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:05:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-14 05:05:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 164. [2020-10-14 05:05:04,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 05:05:04,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 253 transitions. [2020-10-14 05:05:04,368 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 253 transitions. Word has length 68 [2020-10-14 05:05:04,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:04,368 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 253 transitions. [2020-10-14 05:05:04,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:05:04,368 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 253 transitions. [2020-10-14 05:05:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 05:05:04,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:04,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:04,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 05:05:04,370 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1673881246, now seen corresponding path program 1 times [2020-10-14 05:05:04,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:04,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130525401] [2020-10-14 05:05:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:04,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:04,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 05:05:05,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:05:05,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-14 05:05:05,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 05:05:05,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:05:05,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:05,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:05,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:05:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:05:05,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:05,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:05,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:05,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:05,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:05:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:05,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:05,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 05:05:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:05:05,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:05,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:05:05,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 05:05:05,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 05:05:05,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 05:05:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:05,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:05,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:05,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:05,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 05:05:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:05,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 05:05:05,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130525401] [2020-10-14 05:05:05,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:05,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:05:05,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025098036] [2020-10-14 05:05:05,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:05:05,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:05,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:05:05,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:05:05,222 INFO L87 Difference]: Start difference. First operand 164 states and 253 transitions. Second operand 5 states. [2020-10-14 05:05:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:05,362 INFO L93 Difference]: Finished difference Result 268 states and 422 transitions. [2020-10-14 05:05:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 05:05:05,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 05:05:05,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:05,364 INFO L225 Difference]: With dead ends: 268 [2020-10-14 05:05:05,364 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 05:05:05,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:05:05,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 05:05:05,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2020-10-14 05:05:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-14 05:05:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 258 transitions. [2020-10-14 05:05:05,392 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 258 transitions. Word has length 71 [2020-10-14 05:05:05,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:05,393 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 258 transitions. [2020-10-14 05:05:05,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:05:05,393 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 258 transitions. [2020-10-14 05:05:05,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 05:05:05,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:05,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:05,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 05:05:05,395 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:05,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1341222372, now seen corresponding path program 1 times [2020-10-14 05:05:05,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:05,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078658454] [2020-10-14 05:05:05,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:05,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:05:06,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:06,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:06,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:06,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:06,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:06,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:06,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:06,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:06,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:05:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:05:06,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:06,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:06,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:06,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:06,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:06,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:05:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 05:05:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:05:06,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 05:05:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:06,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:06,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:06,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:05:06,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:06,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:05:06,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:06,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:05:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:06,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:05:06,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:06,793 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-10-14 05:05:06,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078658454] [2020-10-14 05:05:06,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:05:06,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-14 05:05:06,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321909100] [2020-10-14 05:05:06,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 05:05:06,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:06,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 05:05:06,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:05:06,795 INFO L87 Difference]: Start difference. First operand 168 states and 258 transitions. Second operand 10 states. [2020-10-14 05:05:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:07,217 INFO L93 Difference]: Finished difference Result 218 states and 367 transitions. [2020-10-14 05:05:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:05:07,219 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-10-14 05:05:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:07,221 INFO L225 Difference]: With dead ends: 218 [2020-10-14 05:05:07,221 INFO L226 Difference]: Without dead ends: 214 [2020-10-14 05:05:07,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:05:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-14 05:05:07,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 189. [2020-10-14 05:05:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 05:05:07,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 310 transitions. [2020-10-14 05:05:07,252 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 310 transitions. Word has length 71 [2020-10-14 05:05:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:07,252 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 310 transitions. [2020-10-14 05:05:07,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 05:05:07,253 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 310 transitions. [2020-10-14 05:05:07,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 05:05:07,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:07,254 INFO L422 BasicCegarLoop]: trace histogram [12, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:07,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 05:05:07,255 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:07,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:07,255 INFO L82 PathProgramCache]: Analyzing trace with hash 352119879, now seen corresponding path program 18 times [2020-10-14 05:05:07,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:07,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045252529] [2020-10-14 05:05:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:07,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:08,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:08,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 05:05:08,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:08,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-10-14 05:05:08,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:08,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 05:05:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:05:08,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 05:05:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:08,854 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 75 [2020-10-14 05:05:09,305 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 70 [2020-10-14 05:05:09,699 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 66 [2020-10-14 05:05:09,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:09,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:09,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:09,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:09,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:09,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:09,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:09,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:09,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:09,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:09,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:09,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:05:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:09,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:09,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:09,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:05:09,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:09,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-14 05:05:09,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:09,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:05:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:09,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:05:09,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:10,313 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2020-10-14 05:05:10,619 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-14 05:05:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:05:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:10,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:10,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:10,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:10,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:10,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:05:10,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:10,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:10,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:10,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:10,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:05:10,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:10,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:05:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:10,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:10,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:10,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 05:05:10,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:10,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-14 05:05:10,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:10,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:05:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:10,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:05:10,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:11,730 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-14 05:05:11,912 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-14 05:05:12,359 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-10-14 05:05:12,756 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2020-10-14 05:05:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:05:13,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045252529] [2020-10-14 05:05:13,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:13,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-14 05:05:13,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857556645] [2020-10-14 05:05:13,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-14 05:05:13,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:13,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-14 05:05:13,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2020-10-14 05:05:13,082 INFO L87 Difference]: Start difference. First operand 189 states and 310 transitions. Second operand 26 states. [2020-10-14 05:05:13,960 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-10-14 05:05:17,176 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 99 [2020-10-14 05:05:17,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:17,985 INFO L93 Difference]: Finished difference Result 229 states and 425 transitions. [2020-10-14 05:05:17,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 05:05:17,986 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 69 [2020-10-14 05:05:17,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:17,988 INFO L225 Difference]: With dead ends: 229 [2020-10-14 05:05:17,988 INFO L226 Difference]: Without dead ends: 225 [2020-10-14 05:05:17,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=153, Invalid=1739, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 05:05:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-14 05:05:18,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 190. [2020-10-14 05:05:18,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-14 05:05:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 312 transitions. [2020-10-14 05:05:18,026 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 312 transitions. Word has length 69 [2020-10-14 05:05:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:18,026 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 312 transitions. [2020-10-14 05:05:18,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-14 05:05:18,026 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 312 transitions. [2020-10-14 05:05:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-14 05:05:18,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:18,028 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 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] [2020-10-14 05:05:18,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 05:05:18,028 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1806061963, now seen corresponding path program 19 times [2020-10-14 05:05:18,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:18,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [370772721] [2020-10-14 05:05:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:18,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:18,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:18,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:18,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 05:05:18,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 696 [2020-10-14 05:05:18,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:18,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:05:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 05:05:18,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 05:05:18,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:23,462 WARN L193 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 382 DAG size of output: 49 [2020-10-14 05:05:27,424 WARN L193 SmtUtils]: Spent 3.90 s on a formula simplification. DAG size of input: 386 DAG size of output: 55 [2020-10-14 05:05:31,507 WARN L193 SmtUtils]: Spent 4.00 s on a formula simplification. DAG size of input: 382 DAG size of output: 56 [2020-10-14 05:05:31,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:31,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:31,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:31,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:31,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:31,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:31,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:31,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:31,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:31,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:31,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:31,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:31,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:31,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:31,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:05:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:31,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:31,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:05:31,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:31,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 05:05:31,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:31,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:05:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:31,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:05:31,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:32,944 WARN L193 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 305 DAG size of output: 42 [2020-10-14 05:05:33,899 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 80 [2020-10-14 05:05:34,787 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 233 DAG size of output: 82 [2020-10-14 05:05:34,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:05:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:34,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:34,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:05:34,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:34,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 05:05:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:34,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:34,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:34,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:05:34,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:34,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 05:05:34,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:34,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:05:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:34,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 05:05:34,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:35,204 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 34 [2020-10-14 05:05:35,393 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 38 [2020-10-14 05:05:35,743 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-10-14 05:05:36,093 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2020-10-14 05:05:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:05:36,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [370772721] [2020-10-14 05:05:36,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:36,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:05:36,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102331410] [2020-10-14 05:05:36,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:05:36,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:36,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:05:36,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:05:36,130 INFO L87 Difference]: Start difference. First operand 190 states and 312 transitions. Second operand 20 states. [2020-10-14 05:05:37,071 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-14 05:05:38,440 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-14 05:05:39,026 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 05:05:39,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:39,190 INFO L93 Difference]: Finished difference Result 230 states and 390 transitions. [2020-10-14 05:05:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:05:39,191 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 69 [2020-10-14 05:05:39,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:39,194 INFO L225 Difference]: With dead ends: 230 [2020-10-14 05:05:39,194 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 05:05:39,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:05:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 05:05:39,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 212. [2020-10-14 05:05:39,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-14 05:05:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 360 transitions. [2020-10-14 05:05:39,231 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 360 transitions. Word has length 69 [2020-10-14 05:05:39,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:39,231 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 360 transitions. [2020-10-14 05:05:39,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:05:39,231 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 360 transitions. [2020-10-14 05:05:39,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-14 05:05:39,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:39,234 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:39,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 05:05:39,234 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:39,235 INFO L82 PathProgramCache]: Analyzing trace with hash 935007276, now seen corresponding path program 1 times [2020-10-14 05:05:39,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:39,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750647825] [2020-10-14 05:05:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:39,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:39,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:39,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:39,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:39,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:39,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1909 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 05:05:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:41,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:41,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:41,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:41,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:41,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:41,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:41,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:41,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:41,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-14 05:05:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 05:05:41,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:41,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:41,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:41,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:41,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 05:05:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:05:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:05:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:41,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:41,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:41,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 05:05:41,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:41,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-14 05:05:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 05:05:41,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:41,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:05:41,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:05:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-14 05:05:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:41,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 05:05:41,251 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750647825] [2020-10-14 05:05:41,251 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:41,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:05:41,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233807800] [2020-10-14 05:05:41,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:05:41,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:41,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:05:41,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:05:41,252 INFO L87 Difference]: Start difference. First operand 212 states and 360 transitions. Second operand 8 states. [2020-10-14 05:05:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:41,530 INFO L93 Difference]: Finished difference Result 323 states and 512 transitions. [2020-10-14 05:05:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:05:41,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-14 05:05:41,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:41,534 INFO L225 Difference]: With dead ends: 323 [2020-10-14 05:05:41,534 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 05:05:41,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-14 05:05:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 05:05:41,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 171. [2020-10-14 05:05:41,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-14 05:05:41,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 248 transitions. [2020-10-14 05:05:41,561 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 248 transitions. Word has length 72 [2020-10-14 05:05:41,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:41,561 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 248 transitions. [2020-10-14 05:05:41,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:05:41,561 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 248 transitions. [2020-10-14 05:05:41,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 05:05:41,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:41,563 INFO L422 BasicCegarLoop]: trace histogram [13, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:05:41,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 05:05:41,563 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash 337601065, now seen corresponding path program 20 times [2020-10-14 05:05:41,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:41,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905780188] [2020-10-14 05:05:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:41,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:42,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:05:42,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:42,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:42,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:42,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:42,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:42,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:05:42,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:42,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:42,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:42,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:42,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:42,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:42,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:42,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 05:05:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:42,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:42,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:05:42,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:42,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 05:05:42,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:42,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:05:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:42,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 05:05:42,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:42,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-14 05:05:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:42,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:42,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:42,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:42,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:42,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:05:42,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:42,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:42,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:05:42,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 05:05:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:42,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:42,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:42,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 05:05:42,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:42,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 05:05:42,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:42,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:05:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 05:05:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:05:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-14 05:05:42,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905780188] [2020-10-14 05:05:42,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:42,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 05:05:42,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762173483] [2020-10-14 05:05:42,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 05:05:42,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:42,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 05:05:42,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 05:05:42,969 INFO L87 Difference]: Start difference. First operand 171 states and 248 transitions. Second operand 20 states. [2020-10-14 05:05:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:05:44,254 INFO L93 Difference]: Finished difference Result 186 states and 270 transitions. [2020-10-14 05:05:44,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 05:05:44,255 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 70 [2020-10-14 05:05:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:05:44,257 INFO L225 Difference]: With dead ends: 186 [2020-10-14 05:05:44,257 INFO L226 Difference]: Without dead ends: 178 [2020-10-14 05:05:44,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2020-10-14 05:05:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-14 05:05:44,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 155. [2020-10-14 05:05:44,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-14 05:05:44,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 215 transitions. [2020-10-14 05:05:44,280 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 215 transitions. Word has length 70 [2020-10-14 05:05:44,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:05:44,280 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 215 transitions. [2020-10-14 05:05:44,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 05:05:44,281 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 215 transitions. [2020-10-14 05:05:44,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 05:05:44,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:05:44,282 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 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] [2020-10-14 05:05:44,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 05:05:44,283 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:05:44,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:05:44,283 INFO L82 PathProgramCache]: Analyzing trace with hash -2141526597, now seen corresponding path program 21 times [2020-10-14 05:05:44,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:05:44,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197266852] [2020-10-14 05:05:44,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:05:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:44,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:45,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 05:05:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:47,179 WARN L193 SmtUtils]: Spent 1.83 s on a formula simplification. DAG size of input: 310 DAG size of output: 60 [2020-10-14 05:05:49,056 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 314 DAG size of output: 65 [2020-10-14 05:05:51,026 WARN L193 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 310 DAG size of output: 61 [2020-10-14 05:05:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:05:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:05:51,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:51,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:05:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:05:51,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:05:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:05:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:51,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:51,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:51,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:05:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-14 05:05:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:51,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:05:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:05:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:52,036 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 21 [2020-10-14 05:05:55,923 WARN L193 SmtUtils]: Spent 3.58 s on a formula simplification. DAG size of input: 1232 DAG size of output: 45 [2020-10-14 05:05:56,784 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 42 [2020-10-14 05:05:57,565 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 254 DAG size of output: 43 [2020-10-14 05:05:57,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:05:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:57,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:57,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:57,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:05:57,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:57,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:05:57,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:57,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:05:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:05:57,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:05:57,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:57,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 05:05:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:05:57,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:05:57,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:05:57,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 05:05:57,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:05:57,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:05:57,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:05:57,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:05:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:05:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:05:57,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 05:05:57,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:05:58,076 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2020-10-14 05:05:58,397 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2020-10-14 05:05:58,738 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2020-10-14 05:05:59,023 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2020-10-14 05:05:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-14 05:05:59,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197266852] [2020-10-14 05:05:59,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:05:59,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 05:05:59,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826020087] [2020-10-14 05:05:59,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 05:05:59,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:05:59,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 05:05:59,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:05:59,060 INFO L87 Difference]: Start difference. First operand 155 states and 215 transitions. Second operand 21 states. [2020-10-14 05:05:59,873 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-10-14 05:06:00,903 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-14 05:06:01,192 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-10-14 05:06:01,747 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2020-10-14 05:06:02,286 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-14 05:06:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:06:02,426 INFO L93 Difference]: Finished difference Result 180 states and 252 transitions. [2020-10-14 05:06:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:06:02,427 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 70 [2020-10-14 05:06:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:06:02,430 INFO L225 Difference]: With dead ends: 180 [2020-10-14 05:06:02,430 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 05:06:02,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:06:02,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 05:06:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 156. [2020-10-14 05:06:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-14 05:06:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 217 transitions. [2020-10-14 05:06:02,454 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 217 transitions. Word has length 70 [2020-10-14 05:06:02,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:06:02,455 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 217 transitions. [2020-10-14 05:06:02,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 05:06:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 217 transitions. [2020-10-14 05:06:02,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 05:06:02,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:06:02,456 INFO L422 BasicCegarLoop]: trace histogram [7, 5, 4, 4, 4, 4, 4, 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] [2020-10-14 05:06:02,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 05:06:02,457 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:06:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:06:02,457 INFO L82 PathProgramCache]: Analyzing trace with hash 343971637, now seen corresponding path program 22 times [2020-10-14 05:06:02,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:06:02,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632052820] [2020-10-14 05:06:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:06:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:02,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:03,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-14 05:06:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 05:06:03,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:09,159 WARN L193 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 675 DAG size of output: 98 [2020-10-14 05:06:13,608 WARN L193 SmtUtils]: Spent 4.37 s on a formula simplification. DAG size of input: 679 DAG size of output: 96 [2020-10-14 05:06:18,382 WARN L193 SmtUtils]: Spent 4.68 s on a formula simplification. DAG size of input: 675 DAG size of output: 99 [2020-10-14 05:06:18,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:06:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:18,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:18,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:18,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:18,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:18,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 05:06:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:18,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:18,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:18,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:06:18,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:18,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:06:18,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:18,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:06:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:18,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:06:18,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:18,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:06:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:18,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:18,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:18,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-14 05:06:18,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:18,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 05:06:18,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:18,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:06:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:18,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 05:06:18,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:19,367 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 27 [2020-10-14 05:06:20,262 WARN L193 SmtUtils]: Spent 811.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 41 [2020-10-14 05:06:21,260 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 52 [2020-10-14 05:06:22,135 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 52 [2020-10-14 05:06:22,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 05:06:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:22,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 05:06:22,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-14 05:06:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:06:22,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:06:22,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:06:22,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:06:22,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:06:22,919 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 47 [2020-10-14 05:06:23,192 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 51