/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:12:57,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:12:57,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:12:57,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:12:57,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:12:57,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:12:57,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:12:57,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:12:57,802 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:12:57,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:12:57,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:12:57,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:12:57,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:12:57,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:12:57,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:12:57,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:12:57,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:12:57,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:12:57,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:12:57,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:12:57,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:12:57,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:12:57,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:12:57,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:12:57,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:12:57,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:12:57,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:12:57,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:12:57,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:12:57,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:12:57,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:12:57,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:12:57,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:12:57,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:12:57,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:12:57,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:12:57,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:12:57,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:12:57,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:12:57,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:12:57,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:12:57,843 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 11:12:57,871 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:12:57,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:12:57,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:12:57,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:12:57,873 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:12:57,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:12:57,873 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:12:57,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:12:57,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:12:57,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:12:57,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:12:57,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:12:57,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:12:57,875 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:12:57,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:12:57,875 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:12:57,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:12:57,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:12:57,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:12:57,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:12:57,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:12:57,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:12:57,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:12:57,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:12:57,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:12:57,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:12:57,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:12:57,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:12:57,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:12:57,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:12:58,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:12:58,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:12:58,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:12:58,397 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:12:58,398 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:12:58,399 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 11:12:58,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db8f425cf/a7b56ed6fa5348828c695b00f36340e1/FLAGb9e1e71c7 [2020-09-25 11:12:59,107 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:12:59,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 11:12:59,123 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db8f425cf/a7b56ed6fa5348828c695b00f36340e1/FLAGb9e1e71c7 [2020-09-25 11:12:59,387 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db8f425cf/a7b56ed6fa5348828c695b00f36340e1 [2020-09-25 11:12:59,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:12:59,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:12:59,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:12:59,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:12:59,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:12:59,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:59" (1/1) ... [2020-09-25 11:12:59,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4453c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:12:59, skipping insertion in model container [2020-09-25 11:12:59,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:12:59" (1/1) ... [2020-09-25 11:12:59,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:12:59,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:13:00,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:00,076 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:13:00,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:13:00,191 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:13:00,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00 WrapperNode [2020-09-25 11:13:00,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:13:00,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:13:00,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:13:00,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:13:00,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (1/1) ... [2020-09-25 11:13:00,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (1/1) ... [2020-09-25 11:13:00,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (1/1) ... [2020-09-25 11:13:00,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (1/1) ... [2020-09-25 11:13:00,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (1/1) ... [2020-09-25 11:13:00,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (1/1) ... [2020-09-25 11:13:00,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (1/1) ... [2020-09-25 11:13:00,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:13:00,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:13:00,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:13:00,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:13:00,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (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 11:13:00,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:13:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:13:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 11:13:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 11:13:00,361 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 11:13:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 11:13:00,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:13:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:13:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:13:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 11:13:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 11:13:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 11:13:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 11:13:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 11:13:00,365 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 11:13:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 11:13:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 11:13:00,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 11:13:00,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 11:13:00,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 11:13:00,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 11:13:00,367 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 11:13:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 11:13:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 11:13:00,369 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 11:13:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 11:13:00,370 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 11:13:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 11:13:00,371 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 11:13:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 11:13:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 11:13:00,372 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 11:13:00,373 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 11:13:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 11:13:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 11:13:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 11:13:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 11:13:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 11:13:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 11:13:00,374 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 11:13:00,375 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 11:13:00,375 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 11:13:00,375 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 11:13:00,375 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 11:13:00,375 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 11:13:00,375 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 11:13:00,376 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 11:13:00,376 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 11:13:00,376 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 11:13:00,376 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 11:13:00,376 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 11:13:00,377 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 11:13:00,377 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 11:13:00,377 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 11:13:00,377 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 11:13:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 11:13:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 11:13:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 11:13:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 11:13:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 11:13:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 11:13:00,379 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:13:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:13:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 11:13:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:13:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 11:13:00,380 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 11:13:00,381 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 11:13:00,381 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 11:13:00,382 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 11:13:00,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:13:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 11:13:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 11:13:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 11:13:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:13:00,384 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 11:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 11:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 11:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 11:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 11:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 11:13:00,385 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 11:13:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 11:13:00,386 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 11:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 11:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 11:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 11:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 11:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 11:13:00,387 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 11:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 11:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 11:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 11:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 11:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 11:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 11:13:00,388 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 11:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 11:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 11:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 11:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 11:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 11:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 11:13:00,389 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 11:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 11:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 11:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 11:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 11:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 11:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 11:13:00,390 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 11:13:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 11:13:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 11:13:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 11:13:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 11:13:00,391 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 11:13:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:13:00,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:13:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:13:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:13:00,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:13:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:13:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:13:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:13:00,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:13:00,749 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 11:13:00,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:13:00,992 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 11:13:01,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:01 BoogieIcfgContainer [2020-09-25 11:13:01,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:13:01,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:13:01,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:13:01,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:13:01,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:12:59" (1/3) ... [2020-09-25 11:13:01,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5da00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:01, skipping insertion in model container [2020-09-25 11:13:01,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:13:00" (2/3) ... [2020-09-25 11:13:01,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b5da00b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:13:01, skipping insertion in model container [2020-09-25 11:13:01,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:13:01" (3/3) ... [2020-09-25 11:13:01,010 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 11:13:01,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:13:01,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:13:01,055 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:13:01,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:13:01,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:13:01,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:13:01,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:13:01,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:13:01,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:13:01,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:13:01,084 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:13:01,108 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 11:13:01,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 11:13:01,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:01,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:01,121 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:01,130 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 11:13:01,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:01,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584535715] [2020-09-25 11:13:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:01,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:13:01,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:01,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 11:13:01,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:13:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:13:01,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:01,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:01,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:01,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 11:13:01,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:01,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:01,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:01,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:13:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:01,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:01,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:01,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:13:01,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:13:01,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:01,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 11:13:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:01,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:01,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584535715] [2020-09-25 11:13:01,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:01,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:13:01,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518221748] [2020-09-25 11:13:01,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:13:01,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:13:01,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:13:01,683 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 11:13:02,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:02,026 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 11:13:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 11:13:02,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 11:13:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:02,044 INFO L225 Difference]: With dead ends: 230 [2020-09-25 11:13:02,045 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 11:13:02,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 11:13:02,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 11:13:02,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 11:13:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 11:13:02,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 11:13:02,115 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 11:13:02,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:02,115 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 11:13:02,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:13:02,116 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 11:13:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 11:13:02,118 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:02,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:02,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:13:02,119 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:02,119 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 11:13:02,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:02,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758830537] [2020-09-25 11:13:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:02,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:02,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 11:13:02,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:02,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-09-25 11:13:02,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:02,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:02,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:13:02,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:02,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:02,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:02,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:13:02,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:02,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:02,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:02,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:02,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:02,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:13:02,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:02,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 11:13:02,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:02,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:13:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:13:02,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:13:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 11:13:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:02,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758830537] [2020-09-25 11:13:02,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:13:02,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:13:02,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72941542] [2020-09-25 11:13:02,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:13:02,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:02,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:13:02,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:13:02,574 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 11:13:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:02,994 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 11:13:02,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:13:02,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 11:13:02,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:02,998 INFO L225 Difference]: With dead ends: 172 [2020-09-25 11:13:02,998 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 11:13:03,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:13:03,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 11:13:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 11:13:03,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 11:13:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 11:13:03,013 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 11:13:03,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:03,013 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 11:13:03,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:13:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 11:13:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:13:03,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:03,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:03,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:13:03,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:03,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:03,018 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 11:13:03,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:03,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657278155] [2020-09-25 11:13:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:03,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:05,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:08,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 11:13:08,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:13:08,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:13:08,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:08,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:08,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 11:13:08,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:13:08,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:08,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:08,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:08,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:08,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:08,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:08,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:08,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:08,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:08,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 11:13:08,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:13:08,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:08,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:13:08,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:13:08,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 11:13:08,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:08,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657278155] [2020-09-25 11:13:08,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:08,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:13:08,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876932232] [2020-09-25 11:13:08,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:13:08,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:08,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:13:08,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:13:08,357 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2020-09-25 11:13:08,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:08,665 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-09-25 11:13:08,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:13:08,666 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 11:13:08,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:08,668 INFO L225 Difference]: With dead ends: 193 [2020-09-25 11:13:08,668 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 11:13:08,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:13:08,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 11:13:08,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-09-25 11:13:08,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 11:13:08,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-09-25 11:13:08,680 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-09-25 11:13:08,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:08,681 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-09-25 11:13:08,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:13:08,681 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-09-25 11:13:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 11:13:08,683 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:08,683 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:13:08,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:13:08,684 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:08,684 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-25 11:13:08,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:08,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177135830] [2020-09-25 11:13:08,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:08,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:09,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:10,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:13:13,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:13:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 11:13:13,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:13:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:13,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 11:13:13,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:13,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:13,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:13,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:13:13,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:13,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:13,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:13,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:13,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:13,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:14,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 11:13:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:13:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-09-25 11:13:14,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:14,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:13:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:13:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 11:13:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:13:14,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:14,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177135830] [2020-09-25 11:13:14,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:14,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:13:14,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258518718] [2020-09-25 11:13:14,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:13:14,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:14,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:13:14,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:13:14,904 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 11 states. [2020-09-25 11:13:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:15,326 INFO L93 Difference]: Finished difference Result 214 states and 236 transitions. [2020-09-25 11:13:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:13:15,326 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2020-09-25 11:13:15,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:15,328 INFO L225 Difference]: With dead ends: 214 [2020-09-25 11:13:15,328 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 11:13:15,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:13:15,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 11:13:15,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-09-25 11:13:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 11:13:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 148 transitions. [2020-09-25 11:13:15,353 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 148 transitions. Word has length 70 [2020-09-25 11:13:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:15,353 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 148 transitions. [2020-09-25 11:13:15,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:13:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 148 transitions. [2020-09-25 11:13:15,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 11:13:15,360 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:15,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:13:15,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:13:15,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:15,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:15,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1904917369, now seen corresponding path program 3 times [2020-09-25 11:13:15,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:15,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026254771] [2020-09-25 11:13:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:15,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:15,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:15,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:18,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:20,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 11:13:20,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:13:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 11:13:20,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:20,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:13:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 11:13:20,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:20,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:20,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:20,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:20,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:20,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:13:20,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:20,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:20,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:20,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:20,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:20,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:21,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:25,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:25,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 11:13:25,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:13:25,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 11:13:25,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:25,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:25,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:13:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:13:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:13:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:25,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026254771] [2020-09-25 11:13:25,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:25,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:13:25,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212014077] [2020-09-25 11:13:25,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:13:25,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:25,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:13:25,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:13:25,764 INFO L87 Difference]: Start difference. First operand 135 states and 148 transitions. Second operand 13 states. [2020-09-25 11:13:26,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:26,268 INFO L93 Difference]: Finished difference Result 235 states and 259 transitions. [2020-09-25 11:13:26,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 11:13:26,268 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 89 [2020-09-25 11:13:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:26,270 INFO L225 Difference]: With dead ends: 235 [2020-09-25 11:13:26,270 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 11:13:26,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:13:26,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 11:13:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-09-25 11:13:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 11:13:26,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 171 transitions. [2020-09-25 11:13:26,297 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 171 transitions. Word has length 89 [2020-09-25 11:13:26,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:26,298 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 171 transitions. [2020-09-25 11:13:26,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:13:26,298 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 171 transitions. [2020-09-25 11:13:26,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-25 11:13:26,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:26,304 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 11:13:26,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:13:26,305 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1289213552, now seen corresponding path program 4 times [2020-09-25 11:13:26,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:26,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269918403] [2020-09-25 11:13:26,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:26,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:26,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:26,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:26,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:27,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:28,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:28,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:31,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 11:13:31,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:13:31,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 11:13:31,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:31,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:13:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:31,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 11:13:31,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:31,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:31,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:31,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:13:31,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:31,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:31,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:31,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:31,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:31,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:31,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:31,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:31,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:32,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:36,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:36,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:13:36,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:13:36,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:13:36,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:36,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:13:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 11:13:36,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:13:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 78 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 11:13:36,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269918403] [2020-09-25 11:13:36,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:36,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:13:36,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825822495] [2020-09-25 11:13:36,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:13:36,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:36,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:13:36,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:13:36,583 INFO L87 Difference]: Start difference. First operand 156 states and 171 transitions. Second operand 7 states. [2020-09-25 11:13:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:36,956 INFO L93 Difference]: Finished difference Result 264 states and 290 transitions. [2020-09-25 11:13:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:13:36,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-09-25 11:13:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:36,958 INFO L225 Difference]: With dead ends: 264 [2020-09-25 11:13:36,958 INFO L226 Difference]: Without dead ends: 157 [2020-09-25 11:13:36,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:13:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-25 11:13:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2020-09-25 11:13:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 11:13:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-09-25 11:13:36,977 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 108 [2020-09-25 11:13:36,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:36,978 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-09-25 11:13:36,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:13:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-09-25 11:13:36,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 11:13:36,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:36,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 11:13:36,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:13:36,986 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:36,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:36,987 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 1 times [2020-09-25 11:13:36,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:36,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1416588026] [2020-09-25 11:13:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:37,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:37,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:38,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:40,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:42,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:42,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 11:13:42,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:13:42,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:13:42,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:42,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:13:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:13:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:13:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:42,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:42,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:42,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:42,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:42,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:42,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:13:42,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:42,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:42,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:42,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:13:42,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:42,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:43,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:43,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 11:13:43,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:43,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 891 [2020-09-25 11:13:43,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:43,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 11:13:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:13:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:13:43,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:13:43,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1416588026] [2020-09-25 11:13:43,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:13:43,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 11:13:43,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709789861] [2020-09-25 11:13:43,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 11:13:43,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:13:43,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 11:13:43,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:13:43,274 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 15 states. [2020-09-25 11:13:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:13:43,774 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-09-25 11:13:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 11:13:43,775 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-25 11:13:43,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:13:43,777 INFO L225 Difference]: With dead ends: 256 [2020-09-25 11:13:43,777 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 11:13:43,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:13:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 11:13:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-09-25 11:13:43,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 11:13:43,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-09-25 11:13:43,786 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-09-25 11:13:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:13:43,787 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-09-25 11:13:43,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 11:13:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-09-25 11:13:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 11:13:43,789 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:13:43,789 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-09-25 11:13:43,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:13:43,790 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:13:43,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:13:43,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 2 times [2020-09-25 11:13:43,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:13:43,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849993167] [2020-09-25 11:13:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:13:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:43,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:46,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 11:13:46,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:13:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2468 [2020-09-25 11:13:46,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:46,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 11:13:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 11:13:46,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:13:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:46,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:13:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:13:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:13:46,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:13:46,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:13:46,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:13:46,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:13:46,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:13:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:13:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:13:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:13:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:13:46,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 11:13:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:13:46,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking...