/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=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:20:45,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:45,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:45,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:45,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:45,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:45,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:45,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:45,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:45,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:45,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:45,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:45,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:45,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:45,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:45,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:45,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:45,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:45,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:45,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:45,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:45,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:45,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:45,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:45,494 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:45,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:45,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:45,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:45,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:45,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:45,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:45,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:45,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:45,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:45,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:45,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:45,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:45,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:45,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:45,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:45,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:45,505 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 12:20:45,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:45,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:45,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:45,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:45,533 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:45,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:45,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:45,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:45,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:45,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:45,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:45,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:45,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:45,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:45,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:45,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:45,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:45,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:45,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:45,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:45,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:45,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:45,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:45,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:45,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:45,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:45,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:45,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:45,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:45,539 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:20:45,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:46,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:46,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:46,021 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:46,022 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:46,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 12:20:46,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e3c7d6b9/c09aa5efd6894a29a4ec4852c26b667b/FLAGb0321eea9 [2020-09-25 12:20:46,714 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:46,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 12:20:46,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e3c7d6b9/c09aa5efd6894a29a4ec4852c26b667b/FLAGb0321eea9 [2020-09-25 12:20:46,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e3c7d6b9/c09aa5efd6894a29a4ec4852c26b667b [2020-09-25 12:20:46,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:46,989 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:46,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:46,990 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:46,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:46,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:46" (1/1) ... [2020-09-25 12:20:47,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c8d6227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:46, skipping insertion in model container [2020-09-25 12:20:47,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:46" (1/1) ... [2020-09-25 12:20:47,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:47,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:47,664 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:47,674 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:47,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:47,785 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:47,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47 WrapperNode [2020-09-25 12:20:47,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:47,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:47,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:47,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:47,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (1/1) ... [2020-09-25 12:20:47,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (1/1) ... [2020-09-25 12:20:47,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (1/1) ... [2020-09-25 12:20:47,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (1/1) ... [2020-09-25 12:20:47,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (1/1) ... [2020-09-25 12:20:47,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (1/1) ... [2020-09-25 12:20:47,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (1/1) ... [2020-09-25 12:20:47,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:47,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:47,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:47,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:47,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (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 12:20:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 12:20:47,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 12:20:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 12:20:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 12:20:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 12:20:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 12:20:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-25 12:20:47,933 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-25 12:20:47,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:20:47,934 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 12:20:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 12:20:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:47,935 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:47,936 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:47,937 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:47,945 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:47,945 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:47,945 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:47,945 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:47,945 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:47,945 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:47,946 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:47,947 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:47,948 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:47,951 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:47,952 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 12:20:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 12:20:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:47,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 12:20:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 12:20:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-25 12:20:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-25 12:20:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:20:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 12:20:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:47,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:48,315 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 12:20:48,613 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:48,614 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 12:20:48,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:48 BoogieIcfgContainer [2020-09-25 12:20:48,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:48,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:48,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:48,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:48,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:46" (1/3) ... [2020-09-25 12:20:48,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1ddeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:48, skipping insertion in model container [2020-09-25 12:20:48,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:47" (2/3) ... [2020-09-25 12:20:48,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78e1ddeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:48, skipping insertion in model container [2020-09-25 12:20:48,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:48" (3/3) ... [2020-09-25 12:20:48,630 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-25 12:20:48,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:48,658 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:20:48,682 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:20:48,718 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:48,718 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:48,719 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:48,719 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:48,719 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:48,719 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:48,720 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:48,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:48,750 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-25 12:20:48,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 12:20:48,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:48,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:20:48,764 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-25 12:20:48,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:48,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624883157] [2020-09-25 12:20:48,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:48,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 12:20:49,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:20:49,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-25 12:20:49,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:20:49,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:20:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:49,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:20:49,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:20:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:49,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:49,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:20:49,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 12:20:49,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 12:20:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:20:49,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:49,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 12:20:49,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 12:20:49,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:20:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:20:49,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:49,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:20:49,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 12:20:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 12:20:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:20:49,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:20:49,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:20:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 12:20:49,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624883157] [2020-09-25 12:20:49,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:49,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 12:20:49,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687439227] [2020-09-25 12:20:49,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:20:49,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:49,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:20:49,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:20:49,756 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-25 12:20:50,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:50,193 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-25 12:20:50,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:20:50,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 12:20:50,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:50,211 INFO L225 Difference]: With dead ends: 289 [2020-09-25 12:20:50,212 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 12:20:50,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:20:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 12:20:50,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-25 12:20:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 12:20:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 12:20:50,287 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-25 12:20:50,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:50,288 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 12:20:50,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:20:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 12:20:50,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:20:50,292 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:50,293 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:20:50,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:50,293 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-25 12:20:50,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:50,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954729106] [2020-09-25 12:20:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:50,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:50,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 12:20:55,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:20:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:20:55,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:20:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:20:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 12:20:55,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:55,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:55,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:20:55,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:55,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:55,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:55,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:20:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:20:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:20:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 12:20:55,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:20:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:20:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:20:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:55,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:20:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:55,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:20:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 12:20:55,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:55,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:20:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:55,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:20:55,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 12:20:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:55,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:56,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:20:56,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:56,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 12:20:56,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:56,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:56,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:20:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:20:56,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:20:56,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:56,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 12:20:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:56,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:56,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:20:56,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:56,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:20:56,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:56,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:56,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:20:56,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:56,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:20:56,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954729106] [2020-09-25 12:20:56,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:56,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:20:56,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738346228] [2020-09-25 12:20:56,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:20:56,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:56,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:20:56,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:56,207 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 14 states. [2020-09-25 12:20:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:57,017 INFO L93 Difference]: Finished difference Result 268 states and 297 transitions. [2020-09-25 12:20:57,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:20:57,019 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-09-25 12:20:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:57,023 INFO L225 Difference]: With dead ends: 268 [2020-09-25 12:20:57,026 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 12:20:57,029 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:20:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 12:20:57,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2020-09-25 12:20:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-25 12:20:57,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2020-09-25 12:20:57,066 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 69 [2020-09-25 12:20:57,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:57,066 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2020-09-25 12:20:57,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:20:57,067 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2020-09-25 12:20:57,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:20:57,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:57,077 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:20:57,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:57,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:20:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:57,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-09-25 12:20:57,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:57,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149130095] [2020-09-25 12:20:57,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:57,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:57,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:02,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 12:21:02,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:02,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:21:02,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:02,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:21:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:21:02,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 12:21:02,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:02,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:02,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:02,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:02,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:21:02,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:02,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:21:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:02,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:02,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:21:02,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:02,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:21:02,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:02,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:02,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:02,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:21:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:02,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:21:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:02,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:02,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:02,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:02,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 12:21:02,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:02,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:02,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:02,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:21:02,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:02,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 12:21:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:02,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:02,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:02,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:21:02,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:02,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:21:02,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 12:21:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:02,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:02,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:21:02,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:21:02,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:02,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:21:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:21:02,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149130095] [2020-09-25 12:21:02,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:02,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:21:02,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186571326] [2020-09-25 12:21:02,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:21:02,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:02,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:21:02,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:21:02,590 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand 14 states. [2020-09-25 12:21:03,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:03,748 INFO L93 Difference]: Finished difference Result 299 states and 340 transitions. [2020-09-25 12:21:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:21:03,750 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-09-25 12:21:03,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:03,756 INFO L225 Difference]: With dead ends: 299 [2020-09-25 12:21:03,756 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 12:21:03,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:21:03,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 12:21:03,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 147. [2020-09-25 12:21:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 12:21:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 166 transitions. [2020-09-25 12:21:03,778 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 166 transitions. Word has length 71 [2020-09-25 12:21:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:03,779 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 166 transitions. [2020-09-25 12:21:03,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:21:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 166 transitions. [2020-09-25 12:21:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 12:21:03,781 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:03,782 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:21:03,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:21:03,782 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash 454377439, now seen corresponding path program 1 times [2020-09-25 12:21:03,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:03,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978471194] [2020-09-25 12:21:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:03,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:03,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:05,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:21:05,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:05,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-09-25 12:21:05,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:05,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:21:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:21:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 12:21:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:05,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:05,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:06,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:06,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:06,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:21:06,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:06,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:06,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:06,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:06,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:06,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:21:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:06,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:21:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:21:06,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:06,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:21:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:21:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:21:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 12:21:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:06,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:06,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:06,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:21:06,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:06,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:21:06,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:06,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:21:06,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:06,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 12:21:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:06,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:21:06,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:06,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:21:06,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:06,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:21:06,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:06,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:06,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 12:21:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:06,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:06,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:06,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:21:06,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:06,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:21:06,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:06,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:21:06,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:21:06,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978471194] [2020-09-25 12:21:06,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:06,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:21:06,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034664473] [2020-09-25 12:21:06,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:21:06,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:06,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:21:06,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:21:06,230 INFO L87 Difference]: Start difference. First operand 147 states and 166 transitions. Second operand 12 states. [2020-09-25 12:21:07,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:07,066 INFO L93 Difference]: Finished difference Result 310 states and 352 transitions. [2020-09-25 12:21:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:21:07,067 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-25 12:21:07,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:07,069 INFO L225 Difference]: With dead ends: 310 [2020-09-25 12:21:07,069 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 12:21:07,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:21:07,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 12:21:07,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 154. [2020-09-25 12:21:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 12:21:07,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2020-09-25 12:21:07,085 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 73 [2020-09-25 12:21:07,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:07,086 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2020-09-25 12:21:07,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:21:07,086 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2020-09-25 12:21:07,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 12:21:07,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:07,088 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:21:07,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:21:07,088 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:07,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:07,089 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-25 12:21:07,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:07,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546101533] [2020-09-25 12:21:07,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:08,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:09,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:10,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:10,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:10,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:11,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 12:21:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-09-25 12:21:12,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:21:12,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:12,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:21:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:21:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:21:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:12,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:12,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:12,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:21:12,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:12,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:12,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:12,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:21:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:12,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:12,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:12,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 560 [2020-09-25 12:21:12,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:12,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:12,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:12,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:21:12,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:12,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:21:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:12,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:12,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 12:21:12,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:12,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:21:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:12,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:21:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:12,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:12,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:12,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:12,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:12,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 12:21:12,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:12,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:12,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:21:12,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:13,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 12:21:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:13,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:21:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:21:13,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:13,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:21:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:13,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:13,035 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:21:13,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546101533] [2020-09-25 12:21:13,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:13,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:21:13,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657295352] [2020-09-25 12:21:13,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:21:13,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:13,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:21:13,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:21:13,038 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand 15 states. [2020-09-25 12:21:14,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:14,988 INFO L93 Difference]: Finished difference Result 335 states and 390 transitions. [2020-09-25 12:21:14,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 12:21:14,989 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 79 [2020-09-25 12:21:14,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:14,992 INFO L225 Difference]: With dead ends: 335 [2020-09-25 12:21:14,995 INFO L226 Difference]: Without dead ends: 227 [2020-09-25 12:21:14,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 12:21:14,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-09-25 12:21:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 165. [2020-09-25 12:21:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-25 12:21:15,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2020-09-25 12:21:15,027 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 79 [2020-09-25 12:21:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:15,028 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2020-09-25 12:21:15,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:21:15,028 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2020-09-25 12:21:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 12:21:15,030 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:15,030 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 12:21:15,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:21:15,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:15,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1660389815, now seen corresponding path program 2 times [2020-09-25 12:21:15,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:15,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29141206] [2020-09-25 12:21:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:15,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:15,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:16,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:17,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:18,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:20,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 12:21:20,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:21:20,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:20,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:21:20,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:21:20,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 12:21:20,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:20,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:20,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:20,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:20,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:21:20,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:20,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:20,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:20,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:21:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:20,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:20,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:21:20,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:21:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-09-25 12:21:20,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:20,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:20,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:20,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:20,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 12:21:20,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:20,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:21:20,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:20,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:20,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:21:20,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:20,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:20,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:21:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:20,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:21:20,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:20,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 12:21:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:20,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:20,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 12:21:20,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:20,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:21:20,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:20,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:21:20,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:20,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:20,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 12:21:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:20,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:20,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:21:20,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:21:20,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:20,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:20,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:21:20,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:20,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 12:21:20,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29141206] [2020-09-25 12:21:20,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:20,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:21:20,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857273769] [2020-09-25 12:21:20,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:21:20,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:20,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:21:20,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:21:20,971 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand 13 states. [2020-09-25 12:21:22,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:22,119 INFO L93 Difference]: Finished difference Result 330 states and 383 transitions. [2020-09-25 12:21:22,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:21:22,120 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-09-25 12:21:22,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:22,122 INFO L225 Difference]: With dead ends: 330 [2020-09-25 12:21:22,122 INFO L226 Difference]: Without dead ends: 213 [2020-09-25 12:21:22,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-09-25 12:21:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-25 12:21:22,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 154. [2020-09-25 12:21:22,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 12:21:22,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2020-09-25 12:21:22,136 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 81 [2020-09-25 12:21:22,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:22,136 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2020-09-25 12:21:22,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:21:22,137 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2020-09-25 12:21:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 12:21:22,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:22,138 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 12:21:22,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:21:22,139 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:22,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:22,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 3 times [2020-09-25 12:21:22,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:22,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818338101] [2020-09-25 12:21:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:22,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:22,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:22,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:22,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:22,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:23,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 12:21:27,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:21:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:21:27,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:21:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:21:27,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 12:21:27,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:27,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:27,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:27,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:27,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:27,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:21:27,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 12:21:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:27,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:21:27,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:27,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 12:21:27,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:21:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:21:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:21:27,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 12:21:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:27,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 12:21:27,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:27,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 12:21:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:21:27,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:21:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:27,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 12:21:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:27,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 12:21:27,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:21:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 12:21:27,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:21:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:21:27,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:21:27,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 12:21:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:27,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:27,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:27,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:21:27,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:27,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:21:27,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:27,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:27,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 12:21:27,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:27,613 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:21:27,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818338101] [2020-09-25 12:21:27,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:27,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:21:27,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827510827] [2020-09-25 12:21:27,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:21:27,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:27,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:21:27,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:21:27,617 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand 16 states. [2020-09-25 12:21:30,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:30,728 INFO L93 Difference]: Finished difference Result 448 states and 536 transitions. [2020-09-25 12:21:30,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 12:21:30,729 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 81 [2020-09-25 12:21:30,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:30,732 INFO L225 Difference]: With dead ends: 448 [2020-09-25 12:21:30,732 INFO L226 Difference]: Without dead ends: 306 [2020-09-25 12:21:30,734 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=532, Invalid=1820, Unknown=0, NotChecked=0, Total=2352 [2020-09-25 12:21:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-25 12:21:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 180. [2020-09-25 12:21:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-25 12:21:30,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 208 transitions. [2020-09-25 12:21:30,757 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 208 transitions. Word has length 81 [2020-09-25 12:21:30,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:30,758 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 208 transitions. [2020-09-25 12:21:30,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:21:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 208 transitions. [2020-09-25 12:21:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 12:21:30,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:30,760 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-09-25 12:21:30,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:21:30,760 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:21:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:30,761 INFO L82 PathProgramCache]: Analyzing trace with hash 27846035, now seen corresponding path program 1 times [2020-09-25 12:21:30,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:30,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006158676] [2020-09-25 12:21:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:30,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:30,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:32,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking...