/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=0.8 --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-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:48:32,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:48:32,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:48:33,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:48:33,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:48:33,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:48:33,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:48:33,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:48:33,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:48:33,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:48:33,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:48:33,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:48:33,024 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:48:33,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:48:33,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:48:33,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:48:33,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:48:33,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:48:33,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:48:33,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:48:33,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:48:33,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:48:33,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:48:33,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:48:33,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:48:33,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:48:33,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:48:33,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:48:33,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:48:33,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:48:33,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:48:33,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:48:33,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:48:33,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:48:33,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:48:33,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:48:33,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:48:33,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:48:33,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:48:33,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:48:33,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:48:33,071 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 07:48:33,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:48:33,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:48:33,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:48:33,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:48:33,127 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:48:33,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:48:33,128 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:48:33,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:48:33,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:48:33,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:48:33,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:48:33,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:48:33,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:48:33,131 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:48:33,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:48:33,132 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:48:33,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:48:33,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:48:33,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:48:33,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:48:33,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:48:33,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:48:33,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:48:33,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:48:33,134 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:48:33,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:48:33,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:48:33,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:48:33,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:48:33,135 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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;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=0.8;log-additional-information=true; [2020-09-25 07:48:33,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:48:33,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:48:33,663 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:48:33,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:48:33,665 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:48:33,666 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 07:48:33,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b439ed70a/25614005cd964a9fa34e25ad21a124c1/FLAG75fa610b2 [2020-09-25 07:48:34,387 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:48:34,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 07:48:34,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b439ed70a/25614005cd964a9fa34e25ad21a124c1/FLAG75fa610b2 [2020-09-25 07:48:34,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b439ed70a/25614005cd964a9fa34e25ad21a124c1 [2020-09-25 07:48:34,664 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:48:34,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:48:34,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:34,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:48:34,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:48:34,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:34" (1/1) ... [2020-09-25 07:48:34,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21085e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:34, skipping insertion in model container [2020-09-25 07:48:34,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:48:34" (1/1) ... [2020-09-25 07:48:34,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:48:34,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:48:35,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:35,237 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:48:35,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:48:35,364 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:48:35,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35 WrapperNode [2020-09-25 07:48:35,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:48:35,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:48:35,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:48:35,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:48:35,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (1/1) ... [2020-09-25 07:48:35,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (1/1) ... [2020-09-25 07:48:35,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (1/1) ... [2020-09-25 07:48:35,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (1/1) ... [2020-09-25 07:48:35,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (1/1) ... [2020-09-25 07:48:35,432 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (1/1) ... [2020-09-25 07:48:35,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (1/1) ... [2020-09-25 07:48:35,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:48:35,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:48:35,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:48:35,444 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:48:35,446 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (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 07:48:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:48:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:48:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 07:48:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 07:48:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 07:48:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 07:48:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 07:48:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 07:48:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 07:48:35,525 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 07:48:35,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:48:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:48:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 07:48:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 07:48:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 07:48:35,526 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 07:48:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 07:48:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 07:48:35,527 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 07:48:35,528 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 07:48:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 07:48:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 07:48:35,529 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 07:48:35,530 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 07:48:35,531 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 07:48:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 07:48:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 07:48:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 07:48:35,532 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 07:48:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 07:48:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 07:48:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 07:48:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 07:48:35,533 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 07:48:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 07:48:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 07:48:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 07:48:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 07:48:35,534 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 07:48:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 07:48:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 07:48:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 07:48:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 07:48:35,536 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 07:48:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 07:48:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 07:48:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 07:48:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 07:48:35,537 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 07:48:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 07:48:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 07:48:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 07:48:35,538 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 07:48:35,539 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 07:48:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 07:48:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 07:48:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 07:48:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 07:48:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 07:48:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 07:48:35,540 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 07:48:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 07:48:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 07:48:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 07:48:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 07:48:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 07:48:35,541 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 07:48:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 07:48:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 07:48:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 07:48:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 07:48:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 07:48:35,542 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 07:48:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:48:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 07:48:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 07:48:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 07:48:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 07:48:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 07:48:35,543 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 07:48:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 07:48:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 07:48:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 07:48:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 07:48:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 07:48:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 07:48:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 07:48:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 07:48:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 07:48:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 07:48:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 07:48:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 07:48:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 07:48:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 07:48:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 07:48:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 07:48:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 07:48:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 07:48:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 07:48:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 07:48:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 07:48:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 07:48:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 07:48:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 07:48:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 07:48:35,547 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 07:48:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 07:48:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 07:48:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 07:48:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 07:48:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 07:48:35,548 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 07:48:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 07:48:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 07:48:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 07:48:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 07:48:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 07:48:35,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 07:48:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 07:48:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 07:48:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:48:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 07:48:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:48:35,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:48:36,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:48:36,171 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 07:48:36,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:36 BoogieIcfgContainer [2020-09-25 07:48:36,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:48:36,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:48:36,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:48:36,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:48:36,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:48:34" (1/3) ... [2020-09-25 07:48:36,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0fb2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:36, skipping insertion in model container [2020-09-25 07:48:36,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:48:35" (2/3) ... [2020-09-25 07:48:36,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0fb2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:48:36, skipping insertion in model container [2020-09-25 07:48:36,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:48:36" (3/3) ... [2020-09-25 07:48:36,186 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 07:48:36,197 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:48:36,206 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:48:36,227 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:48:36,254 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:48:36,255 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:48:36,255 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:48:36,255 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:48:36,255 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:48:36,255 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:48:36,255 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:48:36,255 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:48:36,282 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 07:48:36,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 07:48:36,293 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:36,294 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:36,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:36,303 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 07:48:36,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:36,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715077600] [2020-09-25 07:48:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:36,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:36,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:36,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 07:48:41,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:48:41,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 07:48:41,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-25 07:48:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:48:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:48:41,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:41,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:48:41,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:41,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:48:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:41,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:41,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:48:41,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:41,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:48:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:41,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:48:41,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:41,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:41,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 07:48:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:41,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:48:41,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:41,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 07:48:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:41,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:48:41,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:41,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:41,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 07:48:41,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:41,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 07:48:41,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:41,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:48:41,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:41,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 07:48:41,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:41,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-25 07:48:41,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715077600] [2020-09-25 07:48:41,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:41,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:48:41,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644929881] [2020-09-25 07:48:41,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:48:41,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:41,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:48:41,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:48:41,888 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-09-25 07:48:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:42,113 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-25 07:48:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 07:48:42,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-09-25 07:48:42,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:42,132 INFO L225 Difference]: With dead ends: 100 [2020-09-25 07:48:42,132 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 07:48:42,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:48:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 07:48:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 07:48:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 07:48:42,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 68 transitions. [2020-09-25 07:48:42,208 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 68 transitions. Word has length 82 [2020-09-25 07:48:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:42,211 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 68 transitions. [2020-09-25 07:48:42,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:48:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 68 transitions. [2020-09-25 07:48:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 07:48:42,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:42,216 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:42,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:48:42,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:42,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:42,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1818163735, now seen corresponding path program 1 times [2020-09-25 07:48:42,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:42,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233390707] [2020-09-25 07:48:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:42,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:42,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:43,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 07:48:47,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:47,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 07:48:47,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:48:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 07:48:47,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:48:47,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:48:47,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:48:47,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:47,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:47,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:48:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:47,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 07:48:47,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:47,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:47,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:48:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:47,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 07:48:47,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:47,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:47,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:47,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 07:48:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:47,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 07:48:47,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:48:47,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 07:48:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 07:48:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:47,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 07:48:47,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:48:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:48:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 07:48:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 07:48:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:47,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:47,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:47,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:47,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:48:47,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:47,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 07:48:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 07:48:47,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233390707] [2020-09-25 07:48:47,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:47,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:48:47,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952262647] [2020-09-25 07:48:47,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:48:47,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:47,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:48:47,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:48:47,773 INFO L87 Difference]: Start difference. First operand 63 states and 68 transitions. Second operand 9 states. [2020-09-25 07:48:48,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:48,260 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-09-25 07:48:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:48:48,261 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-25 07:48:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:48,263 INFO L225 Difference]: With dead ends: 140 [2020-09-25 07:48:48,263 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 07:48:48,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-25 07:48:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 07:48:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 07:48:48,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 07:48:48,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 07:48:48,281 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 86 [2020-09-25 07:48:48,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:48,281 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 07:48:48,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:48:48,282 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 07:48:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 07:48:48,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:48,284 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:48,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:48:48,285 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 07:48:48,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:48,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692711728] [2020-09-25 07:48:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:48,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 07:48:49,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:48:49,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 892 [2020-09-25 07:48:49,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:48:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 07:48:49,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 07:48:49,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:48:49,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:49,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:48:49,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:49,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:49,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:48:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:49,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:49,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 07:48:49,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:49,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:49,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:49,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:48:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:49,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:49,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 07:48:49,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:49,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 07:48:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 07:48:49,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 07:48:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:49,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:49,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-25 07:48:49,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:48:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:48:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 07:48:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:49,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:49,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:49,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:48:49,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 07:48:49,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:49,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:48:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:48:49,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:48:49,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 07:48:49,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692711728] [2020-09-25 07:48:49,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:49,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 07:48:49,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701284184] [2020-09-25 07:48:49,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 07:48:49,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:49,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 07:48:49,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 07:48:49,795 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 07:48:50,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:50,580 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 07:48:50,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:48:50,580 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 07:48:50,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:50,584 INFO L225 Difference]: With dead ends: 113 [2020-09-25 07:48:50,585 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 07:48:50,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-25 07:48:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 07:48:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 07:48:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 07:48:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 07:48:50,597 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 07:48:50,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:50,598 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 07:48:50,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 07:48:50,598 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 07:48:50,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 07:48:50,599 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:50,600 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:50,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:48:50,600 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:50,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 07:48:50,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:50,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003435299] [2020-09-25 07:48:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:50,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:51,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:51,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 07:48:51,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:51,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-09-25 07:48:51,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:51,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:51,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 07:48:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 07:48:51,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 07:48:51,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:51,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:51,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:51,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:48:51,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:48:51,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:51,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:51,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:48:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:51,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:51,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:51,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:51,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:48:51,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:51,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:51,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:51,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:51,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:48:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:51,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:51,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:51,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:51,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:51,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:48:51,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:51,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:51,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:51,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:51,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 07:48:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:51,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:51,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:51,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:51,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:48:51,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:51,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:51,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:51,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:51,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:51,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 07:48:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:51,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:51,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:51,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:51,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 07:48:51,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:51,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:51,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:48:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:51,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:48:51,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:48:51,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 07:48:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:51,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:52,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:52,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 07:48:52,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:52,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 07:48:52,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:52,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:48:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 07:48:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 07:48:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:52,203 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 07:48:52,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003435299] [2020-09-25 07:48:52,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:48:52,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 07:48:52,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212265972] [2020-09-25 07:48:52,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:48:52,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:48:52,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:48:52,209 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 07:48:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:48:53,190 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 07:48:53,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 07:48:53,191 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 07:48:53,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:48:53,195 INFO L225 Difference]: With dead ends: 95 [2020-09-25 07:48:53,195 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 07:48:53,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-09-25 07:48:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 07:48:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 07:48:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 07:48:53,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 07:48:53,218 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 07:48:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:48:53,219 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 07:48:53,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:48:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 07:48:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 07:48:53,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:48:53,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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 07:48:53,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:48:53,229 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:48:53,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:48:53,229 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 07:48:53,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:48:53,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074263412] [2020-09-25 07:48:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:48:53,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:53,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:54,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:54,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:55,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 07:48:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:48:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:48:58,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:58,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 07:48:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-25 07:48:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 07:48:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:48:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:48:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:58,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:48:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:58,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:48:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:58,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:48:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 07:48:58,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:58,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:58,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:58,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:58,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:58,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:48:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:58,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:58,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:58,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:58,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 07:48:58,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:58,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:48:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:58,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:48:58,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:58,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 07:48:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:58,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:58,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 07:48:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:58,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:48:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:48:58,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:48:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 07:48:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:58,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:58,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:48:58,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:48:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 07:48:58,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:58,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:48:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:48:58,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:48:58,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:48:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 07:48:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:48:58,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:48:58,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:48:58,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:48:58,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:48:58,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 07:48:58,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:48:58,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:48:58,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:48:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:48:58,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 07:48:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:48:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 38 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 07:48:59,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074263412] [2020-09-25 07:48:59,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:48:59,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 07:48:59,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455281018] [2020-09-25 07:48:59,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 07:48:59,068 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:48:59,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 07:48:59,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:48:59,069 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 16 states. [2020-09-25 07:49:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:00,671 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2020-09-25 07:49:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 07:49:00,672 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 99 [2020-09-25 07:49:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:00,679 INFO L225 Difference]: With dead ends: 134 [2020-09-25 07:49:00,679 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 07:49:00,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=252, Invalid=1230, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 07:49:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 07:49:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 87. [2020-09-25 07:49:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-25 07:49:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-09-25 07:49:00,696 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 99 [2020-09-25 07:49:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:00,697 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-09-25 07:49:00,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 07:49:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-09-25 07:49:00,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-25 07:49:00,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:00,699 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:00,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:49:00,699 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1242921541, now seen corresponding path program 1 times [2020-09-25 07:49:00,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:00,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965110490] [2020-09-25 07:49:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:05,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:05,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 07:49:05,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:49:05,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:49:05,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:05,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 07:49:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 07:49:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 07:49:05,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:05,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:05,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:05,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:05,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:49:05,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:05,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 07:49:05,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:05,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:05,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:05,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:05,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:05,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:49:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:05,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:05,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:49:05,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 07:49:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:05,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:49:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:05,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:05,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:05,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:49:05,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:05,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:49:05,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:05,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:05,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:05,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:05,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 07:49:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:06,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:06,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:06,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:49:06,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:06,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 07:49:06,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:06,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:06,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:49:06,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:06,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 07:49:06,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:06,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 07:49:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:06,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:06,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:49:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-09-25 07:49:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:06,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:49:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:49:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:49:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:06,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 07:49:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:06,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:06,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:07,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:07,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 07:49:07,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:49:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-25 07:49:07,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:07,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:49:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 07:49:07,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:07,197 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 07:49:07,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965110490] [2020-09-25 07:49:07,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:07,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 07:49:07,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70859414] [2020-09-25 07:49:07,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 07:49:07,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:07,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 07:49:07,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2020-09-25 07:49:07,200 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 26 states. [2020-09-25 07:49:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:49:09,671 INFO L93 Difference]: Finished difference Result 119 states and 124 transitions. [2020-09-25 07:49:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 07:49:09,672 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 101 [2020-09-25 07:49:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:49:09,675 INFO L225 Difference]: With dead ends: 119 [2020-09-25 07:49:09,675 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 07:49:09,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=247, Invalid=2203, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 07:49:09,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 07:49:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2020-09-25 07:49:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-25 07:49:09,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 94 transitions. [2020-09-25 07:49:09,688 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 94 transitions. Word has length 101 [2020-09-25 07:49:09,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:49:09,689 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 94 transitions. [2020-09-25 07:49:09,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 07:49:09,689 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 94 transitions. [2020-09-25 07:49:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 07:49:09,690 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:49:09,690 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:49:09,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 07:49:09,691 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:49:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:49:09,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1667050223, now seen corresponding path program 2 times [2020-09-25 07:49:09,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:49:09,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504549676] [2020-09-25 07:49:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:49:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:09,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:10,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:14,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:14,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 07:49:14,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:49:14,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-09-25 07:49:14,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:14,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 07:49:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 07:49:14,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:49:14,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:14,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:49:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:14,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:14,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 07:49:14,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 07:49:14,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:14,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:14,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:14,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:14,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 07:49:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:14,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:14,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:14,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 07:49:14,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:14,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:49:14,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:14,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:49:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:14,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:49:14,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:14,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 07:49:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:15,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:15,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:49:15,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:15,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 07:49:15,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:15,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:49:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:49:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 07:49:15,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:15,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 07:49:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:15,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:15,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:49:15,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:15,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 07:49:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:15,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:15,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:49:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:49:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:49:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:15,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 07:49:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:15,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:15,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:49:15,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:49:15,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 07:49:15,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:15,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 07:49:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:49:15,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 07:49:15,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:49:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 07:49:15,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:49:15,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:15,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:49:16,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:49:16,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 07:49:16,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:49:16,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-25 07:49:16,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:49:16,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:49:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 07:49:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 07:49:16,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 07:49:16,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:49:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 31 proven. 43 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 07:49:16,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504549676] [2020-09-25 07:49:16,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:49:16,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 07:49:16,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170281195] [2020-09-25 07:49:16,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 07:49:16,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:49:16,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 07:49:16,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-09-25 07:49:16,563 INFO L87 Difference]: Start difference. First operand 90 states and 94 transitions. Second operand 27 states. [2020-09-25 07:49:18,381 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2020-09-25 07:49:19,262 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-09-25 07:49:19,827 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-09-25 07:49:19,989 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-09-25 07:49:20,230 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59