/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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 04:24:20,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:24:20,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:24:20,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:24:20,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:24:20,558 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:24:20,560 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:24:20,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:24:20,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:24:20,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:24:20,572 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:24:20,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:24:20,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:24:20,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:24:20,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:24:20,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:24:20,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:24:20,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:24:20,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:24:20,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:24:20,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:24:20,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:24:20,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:24:20,601 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:24:20,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:24:20,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:24:20,605 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:24:20,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:24:20,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:24:20,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:24:20,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:24:20,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:24:20,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:24:20,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:24:20,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:24:20,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:24:20,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:24:20,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:24:20,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:24:20,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:24:20,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:24:20,622 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 04:24:20,656 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:24:20,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:24:20,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:24:20,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:24:20,659 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:24:20,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:24:20,659 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:24:20,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:24:20,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:24:20,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:24:20,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:24:20,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:24:20,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:24:20,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:24:20,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:24:20,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:24:20,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:24:20,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:24:20,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:24:20,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:24:20,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:24:20,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:24:20,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:24:20,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:24:20,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:24:20,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:24:20,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:24:20,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:24:20,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:24:20,664 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:24:21,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:24:21,157 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:24:21,161 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:24:21,162 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:24:21,163 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:24:21,164 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 04:24:21,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/037049f23/562d444146b64282bd45b766abb156c2/FLAG22d67ae7b [2020-09-25 04:24:21,921 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:24:21,922 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 04:24:21,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/037049f23/562d444146b64282bd45b766abb156c2/FLAG22d67ae7b [2020-09-25 04:24:22,198 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/037049f23/562d444146b64282bd45b766abb156c2 [2020-09-25 04:24:22,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:24:22,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:24:22,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:22,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:24:22,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:24:22,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddad570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22, skipping insertion in model container [2020-09-25 04:24:22,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:24:22,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:24:22,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:22,748 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:24:22,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:24:22,859 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:24:22,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22 WrapperNode [2020-09-25 04:24:22,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:24:22,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:24:22,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:24:22,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:24:22,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (1/1) ... [2020-09-25 04:24:22,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:24:22,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:24:22,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:24:22,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:24:22,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (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 04:24:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:24:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:24:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 04:24:23,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 04:24:23,044 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 04:24:23,044 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 04:24:23,045 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 04:24:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 04:24:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-25 04:24:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-25 04:24:23,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:24:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:24:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:24:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 04:24:23,047 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 04:24:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:24:23,048 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:24:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:24:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:24:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:24:23,049 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:24:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:24:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:24:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:24:23,050 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:24:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:24:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:24:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:24:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:24:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:24:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:24:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:24:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:24:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:24:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:24:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:24:23,053 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:24:23,054 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:24:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:24:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:24:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:24:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:24:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:24:23,055 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:24:23,056 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:24:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:24:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:24:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:24:23,057 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:24:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:24:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:24:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:24:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:24:23,058 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:24:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:24:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:24:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:24:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:24:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:24:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:24:23,059 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:24:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:24:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:24:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:24:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:24:23,060 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:24:23,061 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:24:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:24:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:24:23,062 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:24:23,063 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:24:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:24:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:24:23,064 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 04:24:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:24:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:24:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 04:24:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:24:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:24:23,065 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 04:24:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:24:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:24:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:24:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:24:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:24:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:24:23,066 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:24:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:24:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:24:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:24:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:24:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:24:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:24:23,067 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:24:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:24:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:24:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:24:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:24:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:24:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:24:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:24:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:24:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:24:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:24:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:24:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:24:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:24:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:24:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:24:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:24:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:24:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:24:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:24:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:24:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:24:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:24:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:24:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:24:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 04:24:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 04:24:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:24:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:24:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 04:24:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:24:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 04:24:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:24:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-25 04:24:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-25 04:24:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:24:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:24:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 04:24:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:24:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:24:23,465 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 04:24:23,839 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:24:23,839 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 04:24:23,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:23 BoogieIcfgContainer [2020-09-25 04:24:23,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:24:23,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:24:23,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:24:23,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:24:23,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:24:22" (1/3) ... [2020-09-25 04:24:23,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab04372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:23, skipping insertion in model container [2020-09-25 04:24:23,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:24:22" (2/3) ... [2020-09-25 04:24:23,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ab04372 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:24:23, skipping insertion in model container [2020-09-25 04:24:23,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:24:23" (3/3) ... [2020-09-25 04:24:23,856 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-25 04:24:23,867 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:24:23,876 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:24:23,899 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:24:23,928 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:24:23,929 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:24:23,929 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:24:23,929 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:24:23,929 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:24:23,930 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:24:23,930 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:24:23,930 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:24:23,958 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-25 04:24:23,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 04:24:23,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:23,971 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 04:24:23,971 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:23,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-25 04:24:23,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:23,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117753723] [2020-09-25 04:24:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:24,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 04:24:24,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:24:24,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-25 04:24:24,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:24,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:24,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:24:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 04:24:24,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:24,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:24,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:24,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:24:24,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:24,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:24,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:24,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:24,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:24,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:24:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:24,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:24,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:24:24,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:24,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 04:24:24,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:24,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:24,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 04:24:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:24,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:24,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:24:24,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:24,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 04:24:24,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:24,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:24,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:24:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:24,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:24:24,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 04:24:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:24,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:24,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 04:24:24,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:24,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:24:24,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 04:24:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:24,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:24,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:24:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:24,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:24,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:24,785 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 04:24:24,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117753723] [2020-09-25 04:24:24,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:24,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 04:24:24,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617010267] [2020-09-25 04:24:24,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:24:24,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:24,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:24:24,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:24:24,825 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-25 04:24:25,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:25,272 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-25 04:24:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:24:25,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 04:24:25,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:25,295 INFO L225 Difference]: With dead ends: 289 [2020-09-25 04:24:25,296 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 04:24:25,304 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 04:24:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 04:24:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-25 04:24:25,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 04:24:25,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 04:24:25,429 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-25 04:24:25,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:25,429 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 04:24:25,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:24:25,430 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 04:24:25,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 04:24:25,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:25,439 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 04:24:25,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:24:25,440 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:25,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:25,443 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-25 04:24:25,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:25,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617013533] [2020-09-25 04:24:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:26,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:27,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 04:24:30,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:24:30,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:24:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:30,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:24:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:24:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:30,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:30,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:30,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:30,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:30,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:30,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:30,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:30,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:24:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:30,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:30,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:30,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 04:24:30,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:30,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:24:30,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:30,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:24:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:24:30,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:30,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:30,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:24:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:30,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:30,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 04:24:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:30,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:30,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:30,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:30,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:30,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 04:24:30,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:30,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:30,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:24:30,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:30,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:30,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:30,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617013533] [2020-09-25 04:24:30,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:30,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:24:30,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29561604] [2020-09-25 04:24:30,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:24:30,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:30,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:24:30,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:24:30,794 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 9 states. [2020-09-25 04:24:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:31,465 INFO L93 Difference]: Finished difference Result 268 states and 297 transitions. [2020-09-25 04:24:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:24:31,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 04:24:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:31,469 INFO L225 Difference]: With dead ends: 268 [2020-09-25 04:24:31,469 INFO L226 Difference]: Without dead ends: 162 [2020-09-25 04:24:31,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-09-25 04:24:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-25 04:24:31,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 131. [2020-09-25 04:24:31,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-25 04:24:31,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2020-09-25 04:24:31,490 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 69 [2020-09-25 04:24:31,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:31,491 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2020-09-25 04:24:31,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:24:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2020-09-25 04:24:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 04:24:31,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:31,494 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 04:24:31,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:24:31,495 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:31,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:31,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1735568478, now seen corresponding path program 1 times [2020-09-25 04:24:31,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:31,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907321735] [2020-09-25 04:24:31,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:31,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:32,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 04:24:36,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 04:24:36,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:24:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:24:36,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 04:24:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:36,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:36,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:24:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:36,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:36,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 04:24:36,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:36,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:24:36,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:24:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:24:36,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 04:24:36,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:36,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 04:24:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:36,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:36,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:24:36,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:24:36,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:36,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:24:36,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 04:24:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:36,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:36,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:36,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:36,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:36,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:36,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:36,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:36,995 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907321735] [2020-09-25 04:24:36,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:36,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 04:24:36,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306354711] [2020-09-25 04:24:36,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 04:24:36,998 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:36,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 04:24:36,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:24:36,999 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand 14 states. [2020-09-25 04:24:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:38,207 INFO L93 Difference]: Finished difference Result 299 states and 340 transitions. [2020-09-25 04:24:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:24:38,208 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-09-25 04:24:38,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:38,213 INFO L225 Difference]: With dead ends: 299 [2020-09-25 04:24:38,214 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 04:24:38,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:24:38,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 04:24:38,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 147. [2020-09-25 04:24:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 04:24:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 166 transitions. [2020-09-25 04:24:38,256 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 166 transitions. Word has length 71 [2020-09-25 04:24:38,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:38,256 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 166 transitions. [2020-09-25 04:24:38,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 04:24:38,256 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 166 transitions. [2020-09-25 04:24:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 04:24:38,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:38,265 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 04:24:38,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:24:38,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:38,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:38,266 INFO L82 PathProgramCache]: Analyzing trace with hash 454377439, now seen corresponding path program 1 times [2020-09-25 04:24:38,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:38,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725717853] [2020-09-25 04:24:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:38,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:40,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 04:24:40,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:40,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2179 [2020-09-25 04:24:40,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:40,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:40,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:24:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:24:40,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 04:24:40,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:40,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:40,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:40,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:40,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:40,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:40,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:40,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:40,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:40,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:40,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:40,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:24:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:40,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:40,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:40,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:40,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 04:24:40,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:40,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:24:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:40,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:24:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:40,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:24:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:40,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:40,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:24:40,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:40,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:24:40,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:40,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:24:40,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:40,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:40,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:40,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 04:24:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:40,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:40,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:24:40,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:40,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:24:40,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:40,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:24:40,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:40,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:40,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 04:24:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:40,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:40,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:40,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:40,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:40,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:40,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:40,801 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 04:24:40,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725717853] [2020-09-25 04:24:40,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:40,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 04:24:40,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061281970] [2020-09-25 04:24:40,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 04:24:40,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:40,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 04:24:40,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:24:40,807 INFO L87 Difference]: Start difference. First operand 147 states and 166 transitions. Second operand 12 states. [2020-09-25 04:24:41,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:41,659 INFO L93 Difference]: Finished difference Result 310 states and 352 transitions. [2020-09-25 04:24:41,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 04:24:41,659 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-25 04:24:41,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:41,661 INFO L225 Difference]: With dead ends: 310 [2020-09-25 04:24:41,661 INFO L226 Difference]: Without dead ends: 199 [2020-09-25 04:24:41,662 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 04:24:41,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-25 04:24:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 154. [2020-09-25 04:24:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 04:24:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2020-09-25 04:24:41,689 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 73 [2020-09-25 04:24:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:41,690 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2020-09-25 04:24:41,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 04:24:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2020-09-25 04:24:41,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 04:24:41,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:41,693 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 04:24:41,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:24:41,694 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:41,694 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-25 04:24:41,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:41,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381891285] [2020-09-25 04:24:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:42,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:45,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:46,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 04:24:46,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-09-25 04:24:46,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 04:24:46,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:46,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:24:46,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:24:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:46,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:46,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:46,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:46,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:24:46,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:46,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:46,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:46,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:46,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:46,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:24:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:46,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:46,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:46,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:24:46,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 04:24:46,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:46,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:46,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:46,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:24:46,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:47,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 04:24:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:24:47,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:47,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:47,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:24:47,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:47,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:47,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:24:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:47,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:24:47,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:24:47,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:47,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:47,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 04:24:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:47,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:47,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:47,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:24:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:47,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:47,102 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:24:47,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381891285] [2020-09-25 04:24:47,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:47,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 04:24:47,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789224964] [2020-09-25 04:24:47,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 04:24:47,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:47,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 04:24:47,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:24:47,105 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand 11 states. [2020-09-25 04:24:48,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:48,484 INFO L93 Difference]: Finished difference Result 385 states and 435 transitions. [2020-09-25 04:24:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 04:24:48,486 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-09-25 04:24:48,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:48,489 INFO L225 Difference]: With dead ends: 385 [2020-09-25 04:24:48,490 INFO L226 Difference]: Without dead ends: 247 [2020-09-25 04:24:48,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2020-09-25 04:24:48,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-09-25 04:24:48,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 181. [2020-09-25 04:24:48,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-25 04:24:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 201 transitions. [2020-09-25 04:24:48,512 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 201 transitions. Word has length 79 [2020-09-25 04:24:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:48,513 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 201 transitions. [2020-09-25 04:24:48,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 04:24:48,513 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 201 transitions. [2020-09-25 04:24:48,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 04:24:48,515 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:48,515 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 04:24:48,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:24:48,515 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:48,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:48,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 2 times [2020-09-25 04:24:48,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:48,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028833845] [2020-09-25 04:24:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:48,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:48,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:49,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:53,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 04:24:53,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:24:53,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 04:24:53,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:53,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 04:24:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:24:53,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 04:24:53,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:53,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:24:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:53,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:24:53,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:24:53,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:53,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:53,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:24:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:53,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:53,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:24:53,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:53,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 04:24:53,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:53,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:24:53,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:53,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:24:53,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 04:24:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:53,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:24:53,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:53,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 04:24:53,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:53,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:24:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:24:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:24:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:24:53,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:24:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:53,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:53,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:53,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:24:53,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:24:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 04:24:53,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:53,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:24:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:24:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 04:24:53,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:54,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 04:24:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:54,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:54,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:24:54,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:24:54,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:24:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:24:54,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:24:54,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:24:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:24:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:24:54,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:24:54,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:24:54,062 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 04:24:54,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028833845] [2020-09-25 04:24:54,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:24:54,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 04:24:54,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407286666] [2020-09-25 04:24:54,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:24:54,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:24:54,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:24:54,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:24:54,066 INFO L87 Difference]: Start difference. First operand 181 states and 201 transitions. Second operand 15 states. [2020-09-25 04:24:56,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:24:56,582 INFO L93 Difference]: Finished difference Result 443 states and 508 transitions. [2020-09-25 04:24:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-25 04:24:56,583 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 81 [2020-09-25 04:24:56,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:24:56,587 INFO L225 Difference]: With dead ends: 443 [2020-09-25 04:24:56,587 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 04:24:56,589 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 04:24:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 04:24:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 194. [2020-09-25 04:24:56,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 04:24:56,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2020-09-25 04:24:56,612 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 81 [2020-09-25 04:24:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:24:56,613 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2020-09-25 04:24:56,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:24:56,613 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2020-09-25 04:24:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 04:24:56,614 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:24:56,615 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 04:24:56,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:24:56,615 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:24:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:24:56,616 INFO L82 PathProgramCache]: Analyzing trace with hash 27846035, now seen corresponding path program 1 times [2020-09-25 04:24:56,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:24:56,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133020149] [2020-09-25 04:24:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:24:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:24:56,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:56,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:57,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:24:58,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:01,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 04:25:01,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:25:01,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:25:01,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:01,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 04:25:01,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 04:25:01,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 04:25:01,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:01,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:01,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:25:01,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 04:25:01,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:01,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:01,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:01,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:25:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:01,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:25:01,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:25:01,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:01,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:01,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:01,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:01,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 04:25:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:01,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:01,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:25:01,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:01,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 04:25:01,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:01,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:01,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:01,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:01,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:25:01,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:02,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 04:25:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:25:02,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:02,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:25:02,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:25:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 04:25:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:02,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:02,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:02,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:25:02,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:02,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:25:02,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:02,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:25:02,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:25:02,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:25:02,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:02,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 04:25:02,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133020149] [2020-09-25 04:25:02,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:02,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 04:25:02,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706290272] [2020-09-25 04:25:02,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 04:25:02,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:02,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 04:25:02,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-25 04:25:02,172 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand 13 states. [2020-09-25 04:25:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:03,196 INFO L93 Difference]: Finished difference Result 247 states and 277 transitions. [2020-09-25 04:25:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 04:25:03,197 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 82 [2020-09-25 04:25:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:03,201 INFO L225 Difference]: With dead ends: 247 [2020-09-25 04:25:03,202 INFO L226 Difference]: Without dead ends: 241 [2020-09-25 04:25:03,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-09-25 04:25:03,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-25 04:25:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 217. [2020-09-25 04:25:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-25 04:25:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 245 transitions. [2020-09-25 04:25:03,242 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 245 transitions. Word has length 82 [2020-09-25 04:25:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:03,243 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 245 transitions. [2020-09-25 04:25:03,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 04:25:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 245 transitions. [2020-09-25 04:25:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 04:25:03,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:03,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:25:03,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:25:03,248 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:03,249 INFO L82 PathProgramCache]: Analyzing trace with hash 903548806, now seen corresponding path program 1 times [2020-09-25 04:25:03,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:03,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653287557] [2020-09-25 04:25:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:03,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 04:25:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:25:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2981 [2020-09-25 04:25:06,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:06,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:25:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:25:06,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 04:25:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:06,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:06,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:06,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:25:06,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:06,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:25:06,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:06,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:06,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:06,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:06,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:25:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:06,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 04:25:06,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:06,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 04:25:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:06,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:25:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:06,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 04:25:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:06,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 04:25:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:06,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 04:25:06,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:06,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:25:06,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:06,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:25:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 04:25:06,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 04:25:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:06,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 04:25:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:06,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 04:25:06,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:25:06,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:06,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:25:06,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:06,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:06,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-25 04:25:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:06,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:06,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:06,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:25:06,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:06,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:25:06,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:06,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:25:06,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 04:25:06,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:25:06,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:25:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:25:06,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653287557] [2020-09-25 04:25:06,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:25:06,628 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 04:25:06,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12563619] [2020-09-25 04:25:06,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 04:25:06,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:06,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 04:25:06,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:25:06,630 INFO L87 Difference]: Start difference. First operand 217 states and 245 transitions. Second operand 14 states. [2020-09-25 04:25:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:25:07,824 INFO L93 Difference]: Finished difference Result 382 states and 438 transitions. [2020-09-25 04:25:07,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 04:25:07,824 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 83 [2020-09-25 04:25:07,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:25:07,827 INFO L225 Difference]: With dead ends: 382 [2020-09-25 04:25:07,827 INFO L226 Difference]: Without dead ends: 268 [2020-09-25 04:25:07,828 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-09-25 04:25:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-25 04:25:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 193. [2020-09-25 04:25:07,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-25 04:25:07,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 215 transitions. [2020-09-25 04:25:07,853 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 215 transitions. Word has length 83 [2020-09-25 04:25:07,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:25:07,855 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 215 transitions. [2020-09-25 04:25:07,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 04:25:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 215 transitions. [2020-09-25 04:25:07,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 04:25:07,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:07,858 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:07,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:25:07,858 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:07,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1804595944, now seen corresponding path program 1 times [2020-09-25 04:25:07,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:07,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249100328] [2020-09-25 04:25:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY