/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:25,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:25,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:25,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:25,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:25,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:25,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:25,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:26,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:26,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:26,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:26,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:26,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:26,009 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:26,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:26,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:26,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:26,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:26,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:26,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:26,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:26,031 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:26,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:26,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:26,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:26,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:26,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:26,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:26,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:26,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:26,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:26,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:26,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:26,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:26,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:26,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:26,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:26,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:26,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:26,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:26,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:26,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:28:26,103 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:26,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:26,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:26,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:26,106 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:26,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:26,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:26,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:26,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:26,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:26,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:26,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:26,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:26,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:26,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:26,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:26,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:26,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:26,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:26,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:26,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:26,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:26,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:26,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:26,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:26,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:26,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:26,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:26,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:26,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:28:26,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:26,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:26,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:26,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:26,597 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:26,598 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 13:28:26,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10927949d/4122cab256c54c50a4925d7b9d757083/FLAG15904fd1c [2020-09-25 13:28:27,315 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:27,316 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 13:28:27,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10927949d/4122cab256c54c50a4925d7b9d757083/FLAG15904fd1c [2020-09-25 13:28:27,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10927949d/4122cab256c54c50a4925d7b9d757083 [2020-09-25 13:28:27,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:27,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:27,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:27,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:27,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:27,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:27" (1/1) ... [2020-09-25 13:28:27,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fbc2ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:27, skipping insertion in model container [2020-09-25 13:28:27,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:27" (1/1) ... [2020-09-25 13:28:27,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:27,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:28,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:28,180 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:28,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:28,301 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:28,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28 WrapperNode [2020-09-25 13:28:28,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:28,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:28,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:28,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:28,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... [2020-09-25 13:28:28,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... [2020-09-25 13:28:28,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... [2020-09-25 13:28:28,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... [2020-09-25 13:28:28,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... [2020-09-25 13:28:28,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... [2020-09-25 13:28:28,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... [2020-09-25 13:28:28,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:28,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:28,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:28,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:28,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 13:28:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 13:28:28,489 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 13:28:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 13:28:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 13:28:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 13:28:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-25 13:28:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-25 13:28:28,490 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 13:28:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 13:28:28,491 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 13:28:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 13:28:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 13:28:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 13:28:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 13:28:28,492 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 13:28:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 13:28:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 13:28:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 13:28:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 13:28:28,493 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 13:28:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 13:28:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 13:28:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 13:28:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 13:28:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 13:28:28,494 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 13:28:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 13:28:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 13:28:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 13:28:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 13:28:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 13:28:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 13:28:28,495 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 13:28:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 13:28:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 13:28:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 13:28:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 13:28:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 13:28:28,496 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 13:28:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 13:28:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 13:28:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 13:28:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 13:28:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 13:28:28,497 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 13:28:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 13:28:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 13:28:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 13:28:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 13:28:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 13:28:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 13:28:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 13:28:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 13:28:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 13:28:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 13:28:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 13:28:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 13:28:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 13:28:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 13:28:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 13:28:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 13:28:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 13:28:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 13:28:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 13:28:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 13:28:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 13:28:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 13:28:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 13:28:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 13:28:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 13:28:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 13:28:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 13:28:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 13:28:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 13:28:28,502 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 13:28:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 13:28:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 13:28:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 13:28:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 13:28:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 13:28:28,503 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 13:28:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 13:28:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 13:28:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 13:28:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 13:28:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 13:28:28,504 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 13:28:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 13:28:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 13:28:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 13:28:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 13:28:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 13:28:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 13:28:28,505 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 13:28:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 13:28:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 13:28:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 13:28:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 13:28:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 13:28:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 13:28:28,506 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 13:28:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 13:28:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 13:28:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 13:28:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 13:28:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 13:28:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 13:28:28,507 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 13:28:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 13:28:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 13:28:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 13:28:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 13:28:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 13:28:28,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 13:28:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 13:28:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 13:28:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 13:28:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 13:28:28,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:28:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-25 13:28:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-25 13:28:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:28:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 13:28:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:28,857 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 13:28:29,175 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:29,176 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 13:28:29,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:29 BoogieIcfgContainer [2020-09-25 13:28:29,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:29,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:29,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:29,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:29,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:27" (1/3) ... [2020-09-25 13:28:29,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272dceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:29, skipping insertion in model container [2020-09-25 13:28:29,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:28" (2/3) ... [2020-09-25 13:28:29,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272dceeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:29, skipping insertion in model container [2020-09-25 13:28:29,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:29" (3/3) ... [2020-09-25 13:28:29,194 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-25 13:28:29,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:29,223 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:29,249 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:29,295 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:29,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:29,295 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:29,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:29,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:29,296 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:29,296 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:29,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-25 13:28:29,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 13:28:29,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:29,353 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 13:28:29,354 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:29,364 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-25 13:28:29,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:29,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629736403] [2020-09-25 13:28:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 13:28:30,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:30,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-25 13:28:30,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:28:30,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:30,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:28:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:30,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:30,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:28:30,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:30,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:30,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:30,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:28:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:30,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:30,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:30,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 13:28:30,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:30,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 13:28:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:30,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:30,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 13:28:30,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 13:28:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:30,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:30,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:28:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:28:30,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 13:28:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:30,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:30,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 13:28:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:30,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:30,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:30,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:28:30,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:30,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:30,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:30,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:30,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:30,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:30,255 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 13:28:30,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629736403] [2020-09-25 13:28:30,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:30,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 13:28:30,259 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778332201] [2020-09-25 13:28:30,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:28:30,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:30,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:28:30,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:28:30,288 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-25 13:28:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:30,623 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-25 13:28:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:28:30,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 13:28:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:30,641 INFO L225 Difference]: With dead ends: 289 [2020-09-25 13:28:30,641 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 13:28:30,647 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 13:28:30,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 13:28:30,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-25 13:28:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 13:28:30,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 13:28:30,716 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-25 13:28:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:30,717 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 13:28:30,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:28:30,717 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 13:28:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 13:28:30,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:30,722 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 13:28:30,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:30,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:30,723 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-25 13:28:30,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:30,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667569064] [2020-09-25 13:28:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:30,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:31,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:32,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:35,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 13:28:35,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:28:35,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:28:35,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:35,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:35,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:28:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:28:35,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 13:28:35,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:35,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:35,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:35,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:35,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:28:35,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:35,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:35,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:28:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:35,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:28:36,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:36,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 13:28:36,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:36,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:28:36,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 13:28:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:36,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:36,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:28:36,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:36,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:36,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:28:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:28:36,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:36,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 13:28:36,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:36,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:28:36,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 13:28:36,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:36,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:36,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:36,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:36,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:36,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:36,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:36,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:36,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:28:36,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667569064] [2020-09-25 13:28:36,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:36,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:28:36,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920682574] [2020-09-25 13:28:36,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:28:36,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:36,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:28:36,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:28:36,537 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 14 states. [2020-09-25 13:28:37,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:37,932 INFO L93 Difference]: Finished difference Result 300 states and 331 transitions. [2020-09-25 13:28:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:28:37,932 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2020-09-25 13:28:37,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:37,936 INFO L225 Difference]: With dead ends: 300 [2020-09-25 13:28:37,936 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 13:28:37,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812 [2020-09-25 13:28:37,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 13:28:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 134. [2020-09-25 13:28:37,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 13:28:37,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 145 transitions. [2020-09-25 13:28:37,960 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 145 transitions. Word has length 69 [2020-09-25 13:28:37,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:37,961 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 145 transitions. [2020-09-25 13:28:37,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:28:37,961 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 145 transitions. [2020-09-25 13:28:37,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:28:37,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:37,964 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 13:28:37,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:28:37,965 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:37,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:37,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-09-25 13:28:37,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:37,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1477951238] [2020-09-25 13:28:37,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:38,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:38,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:39,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:42,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:42,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 13:28:42,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:28:42,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:28:42,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:42,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:28:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:28:42,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 13:28:42,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:43,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:43,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:43,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:43,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:43,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:28:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:43,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:43,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:28:43,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:43,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:28:43,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:28:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 13:28:43,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:28:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:28:43,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 13:28:43,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:43,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:28:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:43,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 13:28:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:43,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:43,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:43,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:43,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:43,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:43,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:43,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:43,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:43,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:43,392 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:28:43,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1477951238] [2020-09-25 13:28:43,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:43,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:28:43,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210242047] [2020-09-25 13:28:43,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:28:43,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:43,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:28:43,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:28:43,397 INFO L87 Difference]: Start difference. First operand 134 states and 145 transitions. Second operand 13 states. [2020-09-25 13:28:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:44,235 INFO L93 Difference]: Finished difference Result 314 states and 354 transitions. [2020-09-25 13:28:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:28:44,236 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-09-25 13:28:44,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:44,241 INFO L225 Difference]: With dead ends: 314 [2020-09-25 13:28:44,241 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 13:28:44,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2020-09-25 13:28:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 13:28:44,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 167. [2020-09-25 13:28:44,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 13:28:44,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 185 transitions. [2020-09-25 13:28:44,270 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 185 transitions. Word has length 71 [2020-09-25 13:28:44,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:44,270 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 185 transitions. [2020-09-25 13:28:44,270 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:28:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 185 transitions. [2020-09-25 13:28:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 13:28:44,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:44,275 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 13:28:44,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:28:44,275 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:44,275 INFO L82 PathProgramCache]: Analyzing trace with hash 454377439, now seen corresponding path program 1 times [2020-09-25 13:28:44,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:44,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788241651] [2020-09-25 13:28:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:44,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 13:28:46,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2141 [2020-09-25 13:28:46,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:28:46,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:28:46,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 13:28:46,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:46,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:46,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:46,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:28:46,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:46,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:28:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:46,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:46,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:46,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:28:46,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:46,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:46,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:28:46,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:46,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 13:28:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:46,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:46,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:46,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 13:28:46,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:28:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:46,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:46,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 13:28:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:28:46,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:46,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:28:46,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:28:46,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:46,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:46,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 13:28:46,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:46,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:46,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:46,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:46,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:46,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:46,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:46,773 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 13:28:46,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788241651] [2020-09-25 13:28:46,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:46,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:28:46,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806368224] [2020-09-25 13:28:46,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:28:46,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:46,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:28:46,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:28:46,776 INFO L87 Difference]: Start difference. First operand 167 states and 185 transitions. Second operand 12 states. [2020-09-25 13:28:47,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:47,568 INFO L93 Difference]: Finished difference Result 334 states and 376 transitions. [2020-09-25 13:28:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:28:47,569 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-25 13:28:47,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:47,572 INFO L225 Difference]: With dead ends: 334 [2020-09-25 13:28:47,572 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 13:28:47,574 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 13:28:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 13:28:47,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 174. [2020-09-25 13:28:47,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 13:28:47,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2020-09-25 13:28:47,599 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 73 [2020-09-25 13:28:47,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:47,600 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2020-09-25 13:28:47,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:28:47,600 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2020-09-25 13:28:47,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 13:28:47,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:47,604 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 13:28:47,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:28:47,604 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:47,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:47,604 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-25 13:28:47,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:47,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841480231] [2020-09-25 13:28:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:47,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:49,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:50,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:52,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 13:28:52,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-09-25 13:28:52,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:28:52,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:52,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:28:52,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:28:52,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 13:28:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:52,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:52,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:52,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:28:52,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:52,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:28:52,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:52,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:52,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:52,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:52,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:28:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:52,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:53,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:28:53,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:28:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-09-25 13:28:53,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:53,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:53,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:53,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:28:53,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:53,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 13:28:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:53,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:53,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:28:53,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:53,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 13:28:53,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:53,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:53,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:28:53,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:28:53,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:28:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:53,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:53,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:28:53,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:28:53,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 13:28:53,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:53,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:28:53,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:28:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:28:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:28:53,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 13:28:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:53,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:53,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:53,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:28:53,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:53,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:28:53,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:53,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:28:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:28:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:28:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:28:53,584 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 13:28:53,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841480231] [2020-09-25 13:28:53,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:28:53,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:28:53,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364736818] [2020-09-25 13:28:53,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:28:53,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:53,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:28:53,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:28:53,589 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand 15 states. [2020-09-25 13:28:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:55,434 INFO L93 Difference]: Finished difference Result 369 states and 425 transitions. [2020-09-25 13:28:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 13:28:55,435 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 79 [2020-09-25 13:28:55,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:55,440 INFO L225 Difference]: With dead ends: 369 [2020-09-25 13:28:55,441 INFO L226 Difference]: Without dead ends: 269 [2020-09-25 13:28:55,444 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 13:28:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-09-25 13:28:55,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 185. [2020-09-25 13:28:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-25 13:28:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 207 transitions. [2020-09-25 13:28:55,501 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 207 transitions. Word has length 79 [2020-09-25 13:28:55,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:55,501 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 207 transitions. [2020-09-25 13:28:55,501 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:28:55,502 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 207 transitions. [2020-09-25 13:28:55,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 13:28:55,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:55,506 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 13:28:55,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:28:55,506 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:55,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:55,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1660389815, now seen corresponding path program 2 times [2020-09-25 13:28:55,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:55,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010726133] [2020-09-25 13:28:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:55,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:57,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:29:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:29:00,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:00,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:29:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:29:00,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:29:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:00,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:00,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:00,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:29:00,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:29:00,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:00,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:00,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:00,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:00,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:29:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:00,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:00,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:00,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:29:00,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 13:29:00,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:00,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:29:00,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:29:00,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 13:29:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:00,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:00,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:29:00,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:00,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 13:29:00,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:00,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:29:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:00,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:29:00,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:01,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 13:29:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:01,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:01,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 13:29:01,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:01,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 13:29:01,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:01,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:01,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:29:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:29:01,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:29:01,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:01,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:29:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:01,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:01,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:29:01,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:01,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:29:01,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:01,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:29:01,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:01,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:29:01,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010726133] [2020-09-25 13:29:01,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:01,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 13:29:01,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596032633] [2020-09-25 13:29:01,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 13:29:01,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:01,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 13:29:01,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-25 13:29:01,329 INFO L87 Difference]: Start difference. First operand 185 states and 207 transitions. Second operand 19 states. [2020-09-25 13:29:03,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:03,923 INFO L93 Difference]: Finished difference Result 430 states and 491 transitions. [2020-09-25 13:29:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 13:29:03,924 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2020-09-25 13:29:03,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:03,926 INFO L225 Difference]: With dead ends: 430 [2020-09-25 13:29:03,927 INFO L226 Difference]: Without dead ends: 262 [2020-09-25 13:29:03,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=403, Invalid=1489, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 13:29:03,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-25 13:29:03,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 191. [2020-09-25 13:29:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-25 13:29:03,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 213 transitions. [2020-09-25 13:29:03,960 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 213 transitions. Word has length 81 [2020-09-25 13:29:03,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:03,960 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 213 transitions. [2020-09-25 13:29:03,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 13:29:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 213 transitions. [2020-09-25 13:29:03,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 13:29:03,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:03,963 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 13:29:03,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:29:03,963 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:03,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:03,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 3 times [2020-09-25 13:29:03,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:03,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072635360] [2020-09-25 13:29:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:04,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:04,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:04,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:08,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:08,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 13:29:08,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:08,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:29:08,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:08,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 13:29:08,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 13:29:08,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:29:08,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:09,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:09,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:29:09,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:09,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:29:09,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:09,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:09,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:09,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:09,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 13:29:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:09,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:09,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:29:09,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 13:29:09,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:09,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:09,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:29:09,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:09,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 13:29:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:09,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:29:09,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:09,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 13:29:09,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:09,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:09,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:29:09,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:09,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 13:29:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:09,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:09,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:09,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:29:09,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:09,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:29:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:29:09,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:29:09,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:09,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 13:29:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:09,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:09,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:29:09,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:09,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:29:09,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:09,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 13:29:09,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:09,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 13:29:09,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072635360] [2020-09-25 13:29:09,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:09,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:29:09,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796549802] [2020-09-25 13:29:09,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:29:09,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:09,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:29:09,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:29:09,456 INFO L87 Difference]: Start difference. First operand 191 states and 213 transitions. Second operand 15 states. [2020-09-25 13:29:12,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:12,123 INFO L93 Difference]: Finished difference Result 402 states and 463 transitions. [2020-09-25 13:29:12,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 13:29:12,123 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-09-25 13:29:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:12,130 INFO L225 Difference]: With dead ends: 402 [2020-09-25 13:29:12,130 INFO L226 Difference]: Without dead ends: 293 [2020-09-25 13:29:12,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=403, Invalid=1403, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 13:29:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-25 13:29:12,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 193. [2020-09-25 13:29:12,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-25 13:29:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 215 transitions. [2020-09-25 13:29:12,149 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 215 transitions. Word has length 81 [2020-09-25 13:29:12,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:12,150 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 215 transitions. [2020-09-25 13:29:12,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:29:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 215 transitions. [2020-09-25 13:29:12,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 13:29:12,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:12,152 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 13:29:12,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:29:12,152 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:12,153 INFO L82 PathProgramCache]: Analyzing trace with hash 27846035, now seen corresponding path program 1 times [2020-09-25 13:29:12,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:12,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812967677] [2020-09-25 13:29:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking...