/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 SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:15,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:15,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:15,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:15,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:15,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:15,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:15,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:15,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:15,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:15,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:15,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:15,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:15,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:15,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:15,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:15,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:15,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:15,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:15,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:15,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:15,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:15,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:15,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:15,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:15,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:15,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:15,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:15,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:15,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:15,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:15,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:15,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:15,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:15,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:15,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:15,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:15,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:15,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:15,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:15,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:15,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:28:15,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:15,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:15,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:15,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:15,430 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:15,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:15,430 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:15,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:15,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:15,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:15,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:15,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:15,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:15,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:15,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:15,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:15,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:15,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:15,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:15,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:15,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:15,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:15,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:15,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:15,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:15,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:15,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:15,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:15,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:15,435 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 -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:28:15,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:15,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:15,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:15,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:15,899 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:15,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 13:28:15,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69022ce82/e8ad7fa811324114836a7c4acaedad95/FLAG24a2a23eb [2020-09-25 13:28:16,627 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:16,628 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-09-25 13:28:16,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69022ce82/e8ad7fa811324114836a7c4acaedad95/FLAG24a2a23eb [2020-09-25 13:28:16,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/69022ce82/e8ad7fa811324114836a7c4acaedad95 [2020-09-25 13:28:16,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:16,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:16,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:16,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:16,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:16,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb2c9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:16, skipping insertion in model container [2020-09-25 13:28:16,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:16" (1/1) ... [2020-09-25 13:28:16,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:16,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:17,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:17,430 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:17,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:17,566 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:17,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17 WrapperNode [2020-09-25 13:28:17,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:17,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:17,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:17,568 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:17,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... [2020-09-25 13:28:17,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... [2020-09-25 13:28:17,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... [2020-09-25 13:28:17,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... [2020-09-25 13:28:17,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... [2020-09-25 13:28:17,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... [2020-09-25 13:28:17,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... [2020-09-25 13:28:17,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:17,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:17,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:17,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:17,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:17,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 13:28:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 13:28:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 13:28:17,722 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-09-25 13:28:17,723 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 13:28:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 13:28:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-09-25 13:28:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-09-25 13:28:17,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:17,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 13:28:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 13:28:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:17,725 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:17,726 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:17,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:17,728 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:17,729 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:17,730 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:17,731 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:17,732 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:17,733 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:17,734 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:17,735 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:17,736 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:17,737 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 13:28:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-09-25 13:28:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:28:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 13:28:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 13:28:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:17,742 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-09-25 13:28:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:28:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-09-25 13:28:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:18,145 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 13:28:18,342 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:18,343 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 13:28:18,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:18 BoogieIcfgContainer [2020-09-25 13:28:18,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:18,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:18,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:18,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:18,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:16" (1/3) ... [2020-09-25 13:28:18,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56e7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:18, skipping insertion in model container [2020-09-25 13:28:18,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:17" (2/3) ... [2020-09-25 13:28:18,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f56e7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:18, skipping insertion in model container [2020-09-25 13:28:18,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:18" (3/3) ... [2020-09-25 13:28:18,359 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-09-25 13:28:18,371 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:18,383 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:18,407 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:18,446 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:18,447 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:18,447 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:18,447 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:18,447 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:18,448 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:18,448 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:18,448 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-09-25 13:28:18,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 13:28:18,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:18,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:18,503 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:18,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:18,512 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-09-25 13:28:18,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:18,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948904266] [2020-09-25 13:28:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:18,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:18,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:28:19,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:19,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-09-25 13:28:19,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:28:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:28:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:28:19,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:19,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:19,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:19,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:28:19,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:19,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:19,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:19,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:19,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:19,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:19,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 13:28:19,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:19,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:19,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:28:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:19,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:19,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:19,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:28:19,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:19,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:28:19,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:19,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 13:28:19,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:19,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:19,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948904266] [2020-09-25 13:28:19,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:19,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:28:19,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786466733] [2020-09-25 13:28:19,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:28:19,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:19,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:28:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:28:19,869 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 6 states. [2020-09-25 13:28:20,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:20,718 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2020-09-25 13:28:20,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:20,721 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 13:28:20,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:20,768 INFO L225 Difference]: With dead ends: 242 [2020-09-25 13:28:20,768 INFO L226 Difference]: Without dead ends: 144 [2020-09-25 13:28:20,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:28:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-25 13:28:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-09-25 13:28:20,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 13:28:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-09-25 13:28:20,908 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-09-25 13:28:20,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:20,910 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-09-25 13:28:20,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:28:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-09-25 13:28:20,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 13:28:20,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:20,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:20,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:20,917 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:20,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:20,917 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-09-25 13:28:20,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:20,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051914683] [2020-09-25 13:28:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:20,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:20,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:21,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:22,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:25,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:25,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 13:28:25,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:25,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:28:25,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:25,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:25,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:25,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:28:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:28:25,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:26,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:26,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:26,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:26,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:26,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:26,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:26,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:26,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:26,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:26,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:26,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:28:26,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:26,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:26,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:28:26,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:26,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:28:26,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:26,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:26,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:28:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:26,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:26,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-25 13:28:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:26,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:28:26,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:26,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:26,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:26,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:26,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:28:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:28:26,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051914683] [2020-09-25 13:28:26,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:26,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:28:26,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665184575] [2020-09-25 13:28:26,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:26,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:26,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:26,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:26,227 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 9 states. [2020-09-25 13:28:26,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:26,690 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2020-09-25 13:28:26,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:28:26,691 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 13:28:26,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:26,693 INFO L225 Difference]: With dead ends: 147 [2020-09-25 13:28:26,693 INFO L226 Difference]: Without dead ends: 93 [2020-09-25 13:28:26,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-25 13:28:26,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-09-25 13:28:26,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 13:28:26,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-09-25 13:28:26,706 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 51 [2020-09-25 13:28:26,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:26,707 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-09-25 13:28:26,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:26,707 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-09-25 13:28:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:28:26,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:26,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:26,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:26,710 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:26,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1957255427, now seen corresponding path program 1 times [2020-09-25 13:28:26,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:26,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417537352] [2020-09-25 13:28:26,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:27,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:31,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 13:28:31,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:28:31,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:31,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:31,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 13:28:31,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:31,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:31,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:31,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:31,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:31,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:31,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:31,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:31,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:28:32,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:32,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 13:28:32,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:32,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:32,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:28:32,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 13:28:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:32,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:28:32,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:32,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:32,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 13:28:32,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:32,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:28:32,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:32,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:32,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:32,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 13:28:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:32,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:28:32,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:32,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:28:32,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:32,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:32,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 13:28:32,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:32,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:28:32,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417537352] [2020-09-25 13:28:32,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:32,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:28:32,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452299365] [2020-09-25 13:28:32,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:32,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:32,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:32,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:32,201 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand 9 states. [2020-09-25 13:28:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:32,619 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2020-09-25 13:28:32,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:28:32,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 13:28:32,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:32,621 INFO L225 Difference]: With dead ends: 139 [2020-09-25 13:28:32,621 INFO L226 Difference]: Without dead ends: 113 [2020-09-25 13:28:32,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:32,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-25 13:28:32,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2020-09-25 13:28:32,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-25 13:28:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2020-09-25 13:28:32,635 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 69 [2020-09-25 13:28:32,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:32,636 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2020-09-25 13:28:32,636 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:32,636 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2020-09-25 13:28:32,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 13:28:32,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:32,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:32,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:32,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:32,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:32,640 INFO L82 PathProgramCache]: Analyzing trace with hash 281898851, now seen corresponding path program 1 times [2020-09-25 13:28:32,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:32,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941491828] [2020-09-25 13:28:32,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:32,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:33,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:37,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 13:28:37,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:37,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 13:28:37,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:37,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:37,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:28:37,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:37,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:37,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:37,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:28:37,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:37,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:37,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:37,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:37,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:37,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:37,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:28:37,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 13:28:37,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:37,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:37,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:37,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:28:37,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:37,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 13:28:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:38,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:38,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:28:38,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:38,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:38,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:38,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:38,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 13:28:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:38,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:38,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 13:28:38,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:38,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:38,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:38,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 13:28:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:38,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:28:38,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:38,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:28:38,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:38,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:38,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:38,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:28:38,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941491828] [2020-09-25 13:28:38,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:38,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:28:38,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713338558] [2020-09-25 13:28:38,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:38,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:38,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:38,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:38,139 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand 9 states. [2020-09-25 13:28:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:38,647 INFO L93 Difference]: Finished difference Result 146 states and 158 transitions. [2020-09-25 13:28:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:28:38,649 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-09-25 13:28:38,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:38,655 INFO L225 Difference]: With dead ends: 146 [2020-09-25 13:28:38,655 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 13:28:38,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:38,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 13:28:38,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2020-09-25 13:28:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-25 13:28:38,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-25 13:28:38,688 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 76 [2020-09-25 13:28:38,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:38,689 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-25 13:28:38,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-25 13:28:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 13:28:38,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:38,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:38,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:38,695 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:38,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:38,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1557630765, now seen corresponding path program 2 times [2020-09-25 13:28:38,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:38,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132435802] [2020-09-25 13:28:38,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:40,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-25 13:28:43,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:43,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:28:43,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 13:28:43,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:28:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:43,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:43,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:43,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:43,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:43,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:43,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:28:43,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:43,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 13:28:43,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:43,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:28:43,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 13:28:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:44,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:44,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:28:44,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:44,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 13:28:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:44,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:28:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:44,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 13:28:44,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:28:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 13:28:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:44,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:44,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:44,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:44,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:28:44,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:44,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:44,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:28:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:44,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:28:44,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:44,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:44,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:44,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:28:44,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:44,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:28:44,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132435802] [2020-09-25 13:28:44,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:44,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 13:28:44,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357834308] [2020-09-25 13:28:44,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:28:44,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:44,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:28:44,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:28:44,130 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand 9 states. [2020-09-25 13:28:44,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:44,586 INFO L93 Difference]: Finished difference Result 178 states and 193 transitions. [2020-09-25 13:28:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:28:44,587 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-25 13:28:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:44,589 INFO L225 Difference]: With dead ends: 178 [2020-09-25 13:28:44,589 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 13:28:44,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 13:28:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 105. [2020-09-25 13:28:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 13:28:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 113 transitions. [2020-09-25 13:28:44,616 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 113 transitions. Word has length 89 [2020-09-25 13:28:44,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:44,616 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 113 transitions. [2020-09-25 13:28:44,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:28:44,616 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 113 transitions. [2020-09-25 13:28:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 13:28:44,618 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:44,618 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:44,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:44,619 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1758688301, now seen corresponding path program 1 times [2020-09-25 13:28:44,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:44,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074530967] [2020-09-25 13:28:44,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:44,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:45,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:49,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 13:28:49,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:28:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 13:28:49,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:49,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:49,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 13:28:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 13:28:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:49,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:49,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:49,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:49,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:49,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:49,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:49,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:49,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:49,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:49,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:49,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:49,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:49,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:28:49,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:49,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 13:28:49,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:49,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:49,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:28:49,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:50,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 13:28:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:50,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:50,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 13:28:50,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:50,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:50,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:50,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-25 13:28:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:28:50,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:28:50,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:50,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:28:50,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:50,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 13:28:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:50,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:28:50,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:50,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:50,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:28:50,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:50,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 13:28:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:50,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:28:50,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:50,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:28:50,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:50,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:28:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 13:28:50,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:28:50,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 13:28:50,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074530967] [2020-09-25 13:28:50,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:50,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:28:50,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215231522] [2020-09-25 13:28:50,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:28:50,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:50,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:28:50,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:50,344 INFO L87 Difference]: Start difference. First operand 105 states and 113 transitions. Second operand 13 states. [2020-09-25 13:28:51,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:51,046 INFO L93 Difference]: Finished difference Result 182 states and 200 transitions. [2020-09-25 13:28:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:28:51,047 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 96 [2020-09-25 13:28:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:51,048 INFO L225 Difference]: With dead ends: 182 [2020-09-25 13:28:51,048 INFO L226 Difference]: Without dead ends: 126 [2020-09-25 13:28:51,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-09-25 13:28:51,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-25 13:28:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2020-09-25 13:28:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 13:28:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 13:28:51,075 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 96 [2020-09-25 13:28:51,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:51,078 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 13:28:51,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:28:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 13:28:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-09-25 13:28:51,079 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:51,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:28:51,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:28:51,080 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:51,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1090353339, now seen corresponding path program 2 times [2020-09-25 13:28:51,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:51,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660801244] [2020-09-25 13:28:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:51,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:56,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 13:28:56,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:28:56,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 13:28:56,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:56,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:56,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 13:28:56,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 13:28:56,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 13:28:56,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:56,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:56,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:56,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:56,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:28:56,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:56,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:56,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:56,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:56,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:28:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:57,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:28:57,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-09-25 13:28:57,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:57,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:28:57,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:57,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:28:57,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 15 [2020-09-25 13:28:57,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 13:28:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:57,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:57,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:57,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:57,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 13:28:57,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:57,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:57,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 13:28:57,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 13:28:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:57,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:57,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:57,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-25 13:28:57,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:57,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:28:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:28:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:28:57,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:57,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 13:28:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:58,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:58,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:28:58,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:58,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 13:28:58,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:58,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:58,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:28:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:28:58,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:28:58,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 13:28:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:58,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:58,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:58,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:58,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-09-25 13:28:58,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:58,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:28:58,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:28:58,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:58,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 13:28:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:58,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:58,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:28:58,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 13:28:58,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:58,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:28:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:28:58,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:28:59,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660801244] [2020-09-25 13:28:59,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:59,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-09-25 13:28:59,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194150703] [2020-09-25 13:28:59,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-25 13:28:59,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:59,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-25 13:28:59,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1549, Unknown=0, NotChecked=0, Total=1640 [2020-09-25 13:28:59,360 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 41 states.