/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:27:15,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:27:15,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:27:15,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:27:15,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:27:15,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:27:15,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:27:16,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:27:16,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:27:16,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:27:16,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:27:16,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:27:16,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:27:16,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:27:16,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:27:16,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:27:16,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:27:16,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:27:16,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:27:16,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:27:16,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:27:16,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:27:16,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:27:16,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:27:16,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:27:16,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:27:16,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:27:16,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:27:16,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:27:16,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:27:16,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:27:16,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:27:16,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:27:16,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:27:16,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:27:16,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:27:16,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:27:16,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:27:16,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:27:16,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:27:16,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:27:16,061 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 [2020-09-21 12:27:16,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:27:16,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:27:16,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:27:16,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:27:16,108 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:27:16,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:27:16,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:27:16,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:27:16,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:27:16,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:27:16,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:27:16,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:27:16,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:27:16,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:27:16,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:27:16,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:27:16,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:27:16,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:27:16,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:27:16,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:27:16,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:27:16,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:27:16,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:27:16,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:27:16,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:27:16,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:27:16,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:27:16,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:27:16,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:27:16,114 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:27:16,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:27:16,628 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:27:16,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:27:16,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:27:16,635 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:27:16,637 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-21 12:27:16,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c70781f2/5ed10e9e555341cf8ed818f7b91fedd0/FLAGe28d09d2e [2020-09-21 12:27:17,380 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:27:17,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-21 12:27:17,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c70781f2/5ed10e9e555341cf8ed818f7b91fedd0/FLAGe28d09d2e [2020-09-21 12:27:17,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0c70781f2/5ed10e9e555341cf8ed818f7b91fedd0 [2020-09-21 12:27:17,666 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:27:17,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:27:17,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:17,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:27:17,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:27:17,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:17" (1/1) ... [2020-09-21 12:27:17,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a94298b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:17, skipping insertion in model container [2020-09-21 12:27:17,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:27:17" (1/1) ... [2020-09-21 12:27:17,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:27:17,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:27:18,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:18,269 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:27:18,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:27:18,376 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:27:18,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18 WrapperNode [2020-09-21 12:27:18,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:27:18,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:27:18,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:27:18,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:27:18,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (1/1) ... [2020-09-21 12:27:18,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:27:18,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:27:18,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:27:18,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:27:18,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (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 [2020-09-21 12:27:18,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:27:18,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:27:18,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:27:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-21 12:27:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-21 12:27:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-21 12:27:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-21 12:27:18,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-21 12:27:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-21 12:27:18,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-21 12:27:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-21 12:27:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-21 12:27:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-21 12:27:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-21 12:27:18,573 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-21 12:27:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-21 12:27:18,574 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-21 12:27:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-21 12:27:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-21 12:27:18,575 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-21 12:27:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-21 12:27:18,576 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-21 12:27:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-21 12:27:18,577 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-21 12:27:18,579 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-21 12:27:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-21 12:27:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-21 12:27:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-21 12:27:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-21 12:27:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-21 12:27:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-21 12:27:18,580 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-21 12:27:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-21 12:27:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-21 12:27:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-21 12:27:18,581 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-21 12:27:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-21 12:27:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-21 12:27:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-21 12:27:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-21 12:27:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-21 12:27:18,582 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-21 12:27:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-21 12:27:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-21 12:27:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-21 12:27:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-21 12:27:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-21 12:27:18,583 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-21 12:27:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-21 12:27:18,584 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-21 12:27:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-21 12:27:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-21 12:27:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-21 12:27:18,585 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:27:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:27:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:27:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:27:18,586 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-21 12:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-21 12:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-21 12:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-21 12:27:18,587 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-21 12:27:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-21 12:27:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-21 12:27:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-21 12:27:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-21 12:27:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-21 12:27:18,588 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-21 12:27:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-21 12:27:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-21 12:27:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-21 12:27:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-21 12:27:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-21 12:27:18,589 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-21 12:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-21 12:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-21 12:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-21 12:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-21 12:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-21 12:27:18,590 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-21 12:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-21 12:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-21 12:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-21 12:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-21 12:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-21 12:27:18,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-21 12:27:18,592 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-21 12:27:18,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:27:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:27:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:27:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:27:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:27:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:27:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:27:18,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:27:18,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:27:19,358 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:27:19,358 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-21 12:27:19,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:19 BoogieIcfgContainer [2020-09-21 12:27:19,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:27:19,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:27:19,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:27:19,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:27:19,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:27:17" (1/3) ... [2020-09-21 12:27:19,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376041a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:19, skipping insertion in model container [2020-09-21 12:27:19,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:27:18" (2/3) ... [2020-09-21 12:27:19,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@376041a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:27:19, skipping insertion in model container [2020-09-21 12:27:19,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:27:19" (3/3) ... [2020-09-21 12:27:19,374 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-21 12:27:19,386 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:27:19,398 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-21 12:27:19,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-21 12:27:19,456 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:27:19,456 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:27:19,457 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:27:19,457 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:27:19,457 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:27:19,457 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:27:19,457 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:27:19,458 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:27:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-09-21 12:27:19,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-21 12:27:19,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:19,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:19,497 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:19,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:19,505 INFO L82 PathProgramCache]: Analyzing trace with hash 11193106, now seen corresponding path program 1 times [2020-09-21 12:27:19,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:19,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747106954] [2020-09-21 12:27:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:19,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:19,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:27:19,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:19,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-21 12:27:19,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:19,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:27:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:27:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:19,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:19,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:19,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:19,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:27:19,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:19,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:19,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:19,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747106954] [2020-09-21 12:27:19,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:19,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:19,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829282178] [2020-09-21 12:27:19,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:19,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:19,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:19,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:19,971 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2020-09-21 12:27:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:20,242 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2020-09-21 12:27:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:20,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-09-21 12:27:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:20,258 INFO L225 Difference]: With dead ends: 188 [2020-09-21 12:27:20,259 INFO L226 Difference]: Without dead ends: 100 [2020-09-21 12:27:20,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-21 12:27:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-09-21 12:27:20,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-21 12:27:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-09-21 12:27:20,322 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 8 [2020-09-21 12:27:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:20,322 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-09-21 12:27:20,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:20,323 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-09-21 12:27:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:27:20,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:20,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:20,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:27:20,325 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:20,325 INFO L82 PathProgramCache]: Analyzing trace with hash -648207140, now seen corresponding path program 1 times [2020-09-21 12:27:20,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:20,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776899118] [2020-09-21 12:27:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:20,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:20,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:27:20,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:20,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-21 12:27:20,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:27:20,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:27:20,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:20,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:20,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:20,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:27:20,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:20,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:20,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:20,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776899118] [2020-09-21 12:27:20,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:20,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:20,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611511269] [2020-09-21 12:27:20,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:20,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:20,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:20,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:20,614 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 4 states. [2020-09-21 12:27:20,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:20,806 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-09-21 12:27:20,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:20,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 12:27:20,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:20,808 INFO L225 Difference]: With dead ends: 85 [2020-09-21 12:27:20,808 INFO L226 Difference]: Without dead ends: 83 [2020-09-21 12:27:20,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-09-21 12:27:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-09-21 12:27:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-21 12:27:20,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 93 transitions. [2020-09-21 12:27:20,822 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 93 transitions. Word has length 14 [2020-09-21 12:27:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:20,822 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 93 transitions. [2020-09-21 12:27:20,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 93 transitions. [2020-09-21 12:27:20,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:27:20,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:20,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:20,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:27:20,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:20,825 INFO L82 PathProgramCache]: Analyzing trace with hash -648205218, now seen corresponding path program 1 times [2020-09-21 12:27:20,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:20,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999358321] [2020-09-21 12:27:20,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:20,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:20,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:20,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 12:27:20,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:20,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-21 12:27:20,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:20,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:27:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:21,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:21,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:21,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:21,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:27:21,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:21,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:21,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:21,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:21,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999358321] [2020-09-21 12:27:21,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:21,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:21,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002789201] [2020-09-21 12:27:21,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:21,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:21,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:21,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:21,033 INFO L87 Difference]: Start difference. First operand 83 states and 93 transitions. Second operand 5 states. [2020-09-21 12:27:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:21,239 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-09-21 12:27:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:21,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 12:27:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:21,241 INFO L225 Difference]: With dead ends: 84 [2020-09-21 12:27:21,241 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 12:27:21,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 12:27:21,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-09-21 12:27:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 12:27:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 90 transitions. [2020-09-21 12:27:21,251 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 90 transitions. Word has length 14 [2020-09-21 12:27:21,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:21,252 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 90 transitions. [2020-09-21 12:27:21,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 90 transitions. [2020-09-21 12:27:21,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 12:27:21,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:21,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:21,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:27:21,254 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:21,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:21,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1093009051, now seen corresponding path program 1 times [2020-09-21 12:27:21,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:21,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192509595] [2020-09-21 12:27:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:21,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:21,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:27:21,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:27:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-21 12:27:21,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:27:21,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:27:21,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:21,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:21,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:21,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:21,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:21,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:21,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:21,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:21,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:21,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:21,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:21,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192509595] [2020-09-21 12:27:21,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:21,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:21,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713229568] [2020-09-21 12:27:21,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:21,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:21,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:21,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:21,636 INFO L87 Difference]: Start difference. First operand 80 states and 90 transitions. Second operand 4 states. [2020-09-21 12:27:21,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:21,806 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-09-21 12:27:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:21,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 12:27:21,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:21,808 INFO L225 Difference]: With dead ends: 83 [2020-09-21 12:27:21,808 INFO L226 Difference]: Without dead ends: 79 [2020-09-21 12:27:21,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:21,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-21 12:27:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2020-09-21 12:27:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-21 12:27:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2020-09-21 12:27:21,816 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 19 [2020-09-21 12:27:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:21,817 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2020-09-21 12:27:21,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2020-09-21 12:27:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:27:21,818 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:21,818 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] [2020-09-21 12:27:21,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:27:21,819 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:21,819 INFO L82 PathProgramCache]: Analyzing trace with hash -476453587, now seen corresponding path program 1 times [2020-09-21 12:27:21,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:21,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619505014] [2020-09-21 12:27:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:21,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:22,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:27:22,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:27:22,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 434 [2020-09-21 12:27:22,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:27:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:27:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:22,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:22,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:22,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:22,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:22,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619505014] [2020-09-21 12:27:22,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:22,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:22,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698971241] [2020-09-21 12:27:22,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:22,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:22,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:22,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:22,340 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 5 states. [2020-09-21 12:27:22,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:22,561 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2020-09-21 12:27:22,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:22,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 12:27:22,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:22,565 INFO L225 Difference]: With dead ends: 94 [2020-09-21 12:27:22,566 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 12:27:22,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:22,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 12:27:22,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-09-21 12:27:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-21 12:27:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2020-09-21 12:27:22,575 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 20 [2020-09-21 12:27:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:22,576 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2020-09-21 12:27:22,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2020-09-21 12:27:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-21 12:27:22,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:22,577 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] [2020-09-21 12:27:22,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:27:22,578 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:22,578 INFO L82 PathProgramCache]: Analyzing trace with hash 337242584, now seen corresponding path program 1 times [2020-09-21 12:27:22,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:22,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1877375763] [2020-09-21 12:27:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:22,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:27:22,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:27:22,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-09-21 12:27:22,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:27:22,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:22,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:22,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:22,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:22,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:22,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:22,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:22,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1877375763] [2020-09-21 12:27:22,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:22,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:22,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345050428] [2020-09-21 12:27:22,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:22,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:22,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:22,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:22,936 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand 4 states. [2020-09-21 12:27:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:23,072 INFO L93 Difference]: Finished difference Result 97 states and 111 transitions. [2020-09-21 12:27:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:23,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-21 12:27:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:23,075 INFO L225 Difference]: With dead ends: 97 [2020-09-21 12:27:23,075 INFO L226 Difference]: Without dead ends: 95 [2020-09-21 12:27:23,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:23,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-21 12:27:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2020-09-21 12:27:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-21 12:27:23,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-09-21 12:27:23,083 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 24 [2020-09-21 12:27:23,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:23,084 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-09-21 12:27:23,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-09-21 12:27:23,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-21 12:27:23,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:23,085 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] [2020-09-21 12:27:23,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:27:23,086 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:23,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:23,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1864575058, now seen corresponding path program 1 times [2020-09-21 12:27:23,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:23,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410112709] [2020-09-21 12:27:23,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:23,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:27:23,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:27:23,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 571 [2020-09-21 12:27:23,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-21 12:27:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:23,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:23,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:23,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:23,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:23,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:23,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:23,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:23,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410112709] [2020-09-21 12:27:23,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:23,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:23,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562913664] [2020-09-21 12:27:23,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:23,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:23,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:23,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:23,719 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 4 states. [2020-09-21 12:27:23,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:23,868 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-09-21 12:27:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:23,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-21 12:27:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:23,869 INFO L225 Difference]: With dead ends: 75 [2020-09-21 12:27:23,870 INFO L226 Difference]: Without dead ends: 73 [2020-09-21 12:27:23,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:23,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-21 12:27:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-21 12:27:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-21 12:27:23,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-09-21 12:27:23,878 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 25 [2020-09-21 12:27:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:23,879 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-09-21 12:27:23,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-09-21 12:27:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:27:23,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:23,880 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] [2020-09-21 12:27:23,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:27:23,880 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:23,881 INFO L82 PathProgramCache]: Analyzing trace with hash -660297045, now seen corresponding path program 1 times [2020-09-21 12:27:23,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:23,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396663121] [2020-09-21 12:27:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:24,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:24,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:27:24,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:27:24,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-09-21 12:27:24,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:24,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:27:24,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:24,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:24,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:24,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:24,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:24,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:24,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:24,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:24,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:24,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:24,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396663121] [2020-09-21 12:27:24,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:24,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:24,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700860558] [2020-09-21 12:27:24,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:24,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:24,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:24,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:24,483 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 5 states. [2020-09-21 12:27:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:24,692 INFO L93 Difference]: Finished difference Result 185 states and 213 transitions. [2020-09-21 12:27:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:24,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 12:27:24,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:24,694 INFO L225 Difference]: With dead ends: 185 [2020-09-21 12:27:24,694 INFO L226 Difference]: Without dead ends: 124 [2020-09-21 12:27:24,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-21 12:27:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 75. [2020-09-21 12:27:24,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-21 12:27:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 86 transitions. [2020-09-21 12:27:24,705 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 86 transitions. Word has length 27 [2020-09-21 12:27:24,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:24,707 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 86 transitions. [2020-09-21 12:27:24,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:24,707 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 86 transitions. [2020-09-21 12:27:24,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:27:24,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:24,711 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] [2020-09-21 12:27:24,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:27:24,711 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:24,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:24,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1681365399, now seen corresponding path program 1 times [2020-09-21 12:27:24,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:24,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298185112] [2020-09-21 12:27:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:24,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:24,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-21 12:27:24,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:24,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-21 12:27:24,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-21 12:27:24,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:24,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:24,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:24,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:24,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:24,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:24,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:24,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:24,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298185112] [2020-09-21 12:27:24,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:24,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:24,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722384146] [2020-09-21 12:27:24,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:24,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:24,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:24,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:24,966 INFO L87 Difference]: Start difference. First operand 75 states and 86 transitions. Second operand 5 states. [2020-09-21 12:27:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:25,176 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2020-09-21 12:27:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:25,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-09-21 12:27:25,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:25,178 INFO L225 Difference]: With dead ends: 76 [2020-09-21 12:27:25,178 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 12:27:25,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:25,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 12:27:25,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-09-21 12:27:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-21 12:27:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 84 transitions. [2020-09-21 12:27:25,199 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 84 transitions. Word has length 27 [2020-09-21 12:27:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:25,202 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 84 transitions. [2020-09-21 12:27:25,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 84 transitions. [2020-09-21 12:27:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:27:25,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:25,204 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] [2020-09-21 12:27:25,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:27:25,206 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:25,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash -840739825, now seen corresponding path program 1 times [2020-09-21 12:27:25,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:25,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179063198] [2020-09-21 12:27:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:25,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:25,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:25,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:26,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:27:26,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:27:26,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 956 [2020-09-21 12:27:26,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:27:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:27:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:26,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:26,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:26,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:26,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:26,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:26,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:26,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:26,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:26,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:26,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:26,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179063198] [2020-09-21 12:27:26,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:26,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:27:26,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059304086] [2020-09-21 12:27:26,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:27:26,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:26,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:27:26,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:26,267 INFO L87 Difference]: Start difference. First operand 73 states and 84 transitions. Second operand 6 states. [2020-09-21 12:27:26,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:26,571 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2020-09-21 12:27:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:27:26,572 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 12:27:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:26,573 INFO L225 Difference]: With dead ends: 173 [2020-09-21 12:27:26,573 INFO L226 Difference]: Without dead ends: 133 [2020-09-21 12:27:26,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:27:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-21 12:27:26,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 83. [2020-09-21 12:27:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-21 12:27:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-09-21 12:27:26,585 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 28 [2020-09-21 12:27:26,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:26,586 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-09-21 12:27:26,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:27:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-09-21 12:27:26,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:27:26,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:26,587 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] [2020-09-21 12:27:26,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:27:26,587 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:26,589 INFO L82 PathProgramCache]: Analyzing trace with hash -941335665, now seen corresponding path program 1 times [2020-09-21 12:27:26,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:26,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901118653] [2020-09-21 12:27:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:26,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:27,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:27,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:27,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:27,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-21 12:27:27,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:27:27,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:27:27,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:27,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:27,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:27:27,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:27,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:27,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:27,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:27,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:27,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901118653] [2020-09-21 12:27:27,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:27,908 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:27:27,908 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889414859] [2020-09-21 12:27:27,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:27:27,909 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:27,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:27:27,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:27:27,910 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 8 states. [2020-09-21 12:27:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:28,648 INFO L93 Difference]: Finished difference Result 219 states and 247 transitions. [2020-09-21 12:27:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:27:28,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-09-21 12:27:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:28,650 INFO L225 Difference]: With dead ends: 219 [2020-09-21 12:27:28,651 INFO L226 Difference]: Without dead ends: 217 [2020-09-21 12:27:28,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:27:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-21 12:27:28,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 95. [2020-09-21 12:27:28,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-21 12:27:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 110 transitions. [2020-09-21 12:27:28,661 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 110 transitions. Word has length 28 [2020-09-21 12:27:28,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:28,664 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 110 transitions. [2020-09-21 12:27:28,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:27:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 110 transitions. [2020-09-21 12:27:28,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-21 12:27:28,670 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:28,671 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] [2020-09-21 12:27:28,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:27:28,671 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:28,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:28,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208190, now seen corresponding path program 1 times [2020-09-21 12:27:28,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:28,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817109527] [2020-09-21 12:27:28,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:28,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:28,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:29,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:29,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:29,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:29,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:27:29,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:27:29,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:27:29,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:29,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:27:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:29,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:27:29,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:29,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:29,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:29,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:29,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:29,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:29,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:29,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:29,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817109527] [2020-09-21 12:27:29,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:29,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:27:29,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418835385] [2020-09-21 12:27:29,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:27:29,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:29,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:27:29,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:27:29,915 INFO L87 Difference]: Start difference. First operand 95 states and 110 transitions. Second operand 8 states. [2020-09-21 12:27:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:30,530 INFO L93 Difference]: Finished difference Result 217 states and 245 transitions. [2020-09-21 12:27:30,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:27:30,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-09-21 12:27:30,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:30,532 INFO L225 Difference]: With dead ends: 217 [2020-09-21 12:27:30,532 INFO L226 Difference]: Without dead ends: 215 [2020-09-21 12:27:30,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:27:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-21 12:27:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 98. [2020-09-21 12:27:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-21 12:27:30,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2020-09-21 12:27:30,541 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 31 [2020-09-21 12:27:30,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:30,541 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2020-09-21 12:27:30,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:27:30,542 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2020-09-21 12:27:30,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:27:30,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:30,543 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] [2020-09-21 12:27:30,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:27:30,544 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:30,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:30,544 INFO L82 PathProgramCache]: Analyzing trace with hash -2127974144, now seen corresponding path program 1 times [2020-09-21 12:27:30,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:30,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904634207] [2020-09-21 12:27:30,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:30,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:30,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:30,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:30,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:30,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:30,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:31,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:27:31,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:27:31,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-09-21 12:27:31,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:27:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:27:31,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:27:31,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:31,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:31,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:31,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:31,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:31,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:31,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:31,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904634207] [2020-09-21 12:27:31,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:31,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:27:31,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170060966] [2020-09-21 12:27:31,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:31,564 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:31,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:31,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:31,565 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand 5 states. [2020-09-21 12:27:31,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:31,796 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2020-09-21 12:27:31,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:27:31,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-21 12:27:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:31,797 INFO L225 Difference]: With dead ends: 142 [2020-09-21 12:27:31,798 INFO L226 Difference]: Without dead ends: 126 [2020-09-21 12:27:31,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:31,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-09-21 12:27:31,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2020-09-21 12:27:31,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-09-21 12:27:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2020-09-21 12:27:31,810 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 33 [2020-09-21 12:27:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:31,811 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2020-09-21 12:27:31,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2020-09-21 12:27:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:27:31,813 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:31,813 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:31,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:27:31,814 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1679328926, now seen corresponding path program 1 times [2020-09-21 12:27:31,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:31,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111432959] [2020-09-21 12:27:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:31,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:31,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:31,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:27:31,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:31,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-21 12:27:31,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:31,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:31,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:27:31,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:32,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:32,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:32,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:32,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:32,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:32,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:32,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:32,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:32,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:32,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111432959] [2020-09-21 12:27:32,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:32,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:27:32,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893326548] [2020-09-21 12:27:32,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:27:32,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:32,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:27:32,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:32,052 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand 6 states. [2020-09-21 12:27:32,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:32,314 INFO L93 Difference]: Finished difference Result 204 states and 239 transitions. [2020-09-21 12:27:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:27:32,314 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 12:27:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:32,316 INFO L225 Difference]: With dead ends: 204 [2020-09-21 12:27:32,316 INFO L226 Difference]: Without dead ends: 144 [2020-09-21 12:27:32,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:27:32,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-21 12:27:32,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 121. [2020-09-21 12:27:32,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-21 12:27:32,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2020-09-21 12:27:32,328 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 33 [2020-09-21 12:27:32,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:32,328 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2020-09-21 12:27:32,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:27:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2020-09-21 12:27:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:27:32,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:32,329 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] [2020-09-21 12:27:32,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:27:32,329 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:32,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:32,330 INFO L82 PathProgramCache]: Analyzing trace with hash 1814124928, now seen corresponding path program 1 times [2020-09-21 12:27:32,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:32,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028679753] [2020-09-21 12:27:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:32,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:32,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:27:33,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:27:33,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1006 [2020-09-21 12:27:33,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:27:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:27:33,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:27:33,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:33,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:33,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:33,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:33,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:27:33,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:33,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:33,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:33,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028679753] [2020-09-21 12:27:33,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:33,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:27:33,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542047394] [2020-09-21 12:27:33,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:27:33,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:33,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:27:33,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:33,472 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand 7 states. [2020-09-21 12:27:33,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:33,802 INFO L93 Difference]: Finished difference Result 197 states and 226 transitions. [2020-09-21 12:27:33,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:27:33,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-21 12:27:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:33,804 INFO L225 Difference]: With dead ends: 197 [2020-09-21 12:27:33,804 INFO L226 Difference]: Without dead ends: 177 [2020-09-21 12:27:33,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:27:33,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-21 12:27:33,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 131. [2020-09-21 12:27:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-21 12:27:33,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-09-21 12:27:33,819 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 33 [2020-09-21 12:27:33,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:33,821 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-09-21 12:27:33,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:27:33,821 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-09-21 12:27:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:27:33,822 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:33,823 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] [2020-09-21 12:27:33,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:27:33,823 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:33,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:33,824 INFO L82 PathProgramCache]: Analyzing trace with hash 2032979646, now seen corresponding path program 1 times [2020-09-21 12:27:33,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:33,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22181228] [2020-09-21 12:27:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:33,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:34,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:27:34,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-21 12:27:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:27:34,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 12:27:34,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:27:34,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:34,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:34,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:34,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:34,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:34,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:27:34,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:34,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:34,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:27:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:34,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22181228] [2020-09-21 12:27:34,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:34,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:27:34,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055070686] [2020-09-21 12:27:34,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:27:34,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:34,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:27:34,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:34,969 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 6 states. [2020-09-21 12:27:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:35,213 INFO L93 Difference]: Finished difference Result 181 states and 209 transitions. [2020-09-21 12:27:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:27:35,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-21 12:27:35,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:35,215 INFO L225 Difference]: With dead ends: 181 [2020-09-21 12:27:35,215 INFO L226 Difference]: Without dead ends: 165 [2020-09-21 12:27:35,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:27:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-21 12:27:35,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 151. [2020-09-21 12:27:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-21 12:27:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 180 transitions. [2020-09-21 12:27:35,228 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 180 transitions. Word has length 33 [2020-09-21 12:27:35,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:35,228 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 180 transitions. [2020-09-21 12:27:35,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:27:35,228 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 180 transitions. [2020-09-21 12:27:35,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 12:27:35,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:35,229 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:35,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 12:27:35,229 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:35,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:35,230 INFO L82 PathProgramCache]: Analyzing trace with hash 270360779, now seen corresponding path program 1 times [2020-09-21 12:27:35,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:35,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669721700] [2020-09-21 12:27:35,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:27:35,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:35,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-21 12:27:35,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:35,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:35,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:27:35,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:35,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:35,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:35,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:35,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:35,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:27:35,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:35,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:35,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:35,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:27:35,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669721700] [2020-09-21 12:27:35,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:35,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-21 12:27:35,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769176039] [2020-09-21 12:27:35,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:27:35,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:35,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:27:35,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:35,738 INFO L87 Difference]: Start difference. First operand 151 states and 180 transitions. Second operand 5 states. [2020-09-21 12:27:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:35,947 INFO L93 Difference]: Finished difference Result 190 states and 218 transitions. [2020-09-21 12:27:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:27:35,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-21 12:27:35,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:35,950 INFO L225 Difference]: With dead ends: 190 [2020-09-21 12:27:35,950 INFO L226 Difference]: Without dead ends: 159 [2020-09-21 12:27:35,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:27:35,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-21 12:27:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-09-21 12:27:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-21 12:27:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2020-09-21 12:27:35,964 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 36 [2020-09-21 12:27:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:35,964 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2020-09-21 12:27:35,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:27:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2020-09-21 12:27:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 12:27:35,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:35,965 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] [2020-09-21 12:27:35,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 12:27:35,966 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:35,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:35,966 INFO L82 PathProgramCache]: Analyzing trace with hash -620993698, now seen corresponding path program 1 times [2020-09-21 12:27:35,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:35,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169386429] [2020-09-21 12:27:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:35,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:36,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:27:36,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-21 12:27:36,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:27:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:27:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:36,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:36,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:36,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:36,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:36,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:36,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:36,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:36,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169386429] [2020-09-21 12:27:36,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:36,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:36,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303463082] [2020-09-21 12:27:36,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:36,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:36,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:36,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:36,173 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 4 states. [2020-09-21 12:27:36,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:36,306 INFO L93 Difference]: Finished difference Result 208 states and 249 transitions. [2020-09-21 12:27:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:36,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 12:27:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:36,308 INFO L225 Difference]: With dead ends: 208 [2020-09-21 12:27:36,308 INFO L226 Difference]: Without dead ends: 205 [2020-09-21 12:27:36,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-21 12:27:36,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 196. [2020-09-21 12:27:36,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-21 12:27:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 233 transitions. [2020-09-21 12:27:36,322 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 233 transitions. Word has length 36 [2020-09-21 12:27:36,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:36,323 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 233 transitions. [2020-09-21 12:27:36,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:36,323 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 233 transitions. [2020-09-21 12:27:36,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 12:27:36,323 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:36,324 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] [2020-09-21 12:27:36,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 12:27:36,324 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:36,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:36,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1632051366, now seen corresponding path program 1 times [2020-09-21 12:27:36,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:36,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912487635] [2020-09-21 12:27:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:36,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:36,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:27:36,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:36,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-21 12:27:36,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-21 12:27:36,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:27:36,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:36,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:36,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:36,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:27:36,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:36,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:36,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:36,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912487635] [2020-09-21 12:27:36,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:36,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:36,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226557850] [2020-09-21 12:27:36,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:36,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:36,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:36,455 INFO L87 Difference]: Start difference. First operand 196 states and 233 transitions. Second operand 4 states. [2020-09-21 12:27:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:36,585 INFO L93 Difference]: Finished difference Result 329 states and 398 transitions. [2020-09-21 12:27:36,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:36,585 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 12:27:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:36,587 INFO L225 Difference]: With dead ends: 329 [2020-09-21 12:27:36,587 INFO L226 Difference]: Without dead ends: 204 [2020-09-21 12:27:36,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-21 12:27:36,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 184. [2020-09-21 12:27:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-09-21 12:27:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2020-09-21 12:27:36,607 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 36 [2020-09-21 12:27:36,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:36,607 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2020-09-21 12:27:36,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:36,607 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2020-09-21 12:27:36,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:27:36,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:36,608 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:36,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 12:27:36,610 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:36,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:36,610 INFO L82 PathProgramCache]: Analyzing trace with hash -366933706, now seen corresponding path program 1 times [2020-09-21 12:27:36,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:36,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586501188] [2020-09-21 12:27:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:36,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:36,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:37,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:37,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:27:37,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:27:37,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:27:37,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:37,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:27:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:27:37,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-21 12:27:37,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:27:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:38,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:38,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:38,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:38,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:38,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:38,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:38,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:38,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:38,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586501188] [2020-09-21 12:27:38,029 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:38,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:27:38,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914227481] [2020-09-21 12:27:38,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:27:38,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:38,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:27:38,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:27:38,031 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand 8 states. [2020-09-21 12:27:38,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:38,575 INFO L93 Difference]: Finished difference Result 358 states and 430 transitions. [2020-09-21 12:27:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:27:38,576 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-09-21 12:27:38,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:38,578 INFO L225 Difference]: With dead ends: 358 [2020-09-21 12:27:38,578 INFO L226 Difference]: Without dead ends: 306 [2020-09-21 12:27:38,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:27:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-21 12:27:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 201. [2020-09-21 12:27:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2020-09-21 12:27:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 240 transitions. [2020-09-21 12:27:38,596 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 240 transitions. Word has length 40 [2020-09-21 12:27:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:38,596 INFO L479 AbstractCegarLoop]: Abstraction has 201 states and 240 transitions. [2020-09-21 12:27:38,596 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:27:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 240 transitions. [2020-09-21 12:27:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:27:38,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:38,597 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:38,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-21 12:27:38,598 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:38,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:38,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1933888884, now seen corresponding path program 1 times [2020-09-21 12:27:38,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:38,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643828792] [2020-09-21 12:27:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:38,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:38,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:38,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:27:39,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:27:39,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-21 12:27:39,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:27:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:27:39,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:27:39,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:39,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:39,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:39,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:39,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:39,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:39,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:39,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:39,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:39,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643828792] [2020-09-21 12:27:39,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:39,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:27:39,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924635833] [2020-09-21 12:27:39,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:27:39,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:39,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:27:39,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:27:39,689 INFO L87 Difference]: Start difference. First operand 201 states and 240 transitions. Second operand 6 states. [2020-09-21 12:27:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:39,939 INFO L93 Difference]: Finished difference Result 278 states and 332 transitions. [2020-09-21 12:27:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:27:39,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-09-21 12:27:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:39,942 INFO L225 Difference]: With dead ends: 278 [2020-09-21 12:27:39,942 INFO L226 Difference]: Without dead ends: 210 [2020-09-21 12:27:39,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:27:39,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-21 12:27:39,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 203. [2020-09-21 12:27:39,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-21 12:27:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 242 transitions. [2020-09-21 12:27:39,963 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 242 transitions. Word has length 40 [2020-09-21 12:27:39,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:39,963 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 242 transitions. [2020-09-21 12:27:39,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:27:39,964 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 242 transitions. [2020-09-21 12:27:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:27:39,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:39,965 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:27:39,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-21 12:27:39,966 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:39,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:39,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1340010058, now seen corresponding path program 1 times [2020-09-21 12:27:39,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:39,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222638111] [2020-09-21 12:27:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:40,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:40,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:40,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:40,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:40,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:27:41,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:27:41,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1018 [2020-09-21 12:27:41,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:27:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:27:41,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:27:41,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:41,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:41,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:41,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:41,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:41,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:41,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:41,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222638111] [2020-09-21 12:27:41,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:27:41,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:27:41,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218073595] [2020-09-21 12:27:41,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:27:41,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:41,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:27:41,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:27:41,359 INFO L87 Difference]: Start difference. First operand 203 states and 242 transitions. Second operand 10 states. [2020-09-21 12:27:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:42,058 INFO L93 Difference]: Finished difference Result 351 states and 416 transitions. [2020-09-21 12:27:42,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:27:42,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-09-21 12:27:42,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:42,063 INFO L225 Difference]: With dead ends: 351 [2020-09-21 12:27:42,063 INFO L226 Difference]: Without dead ends: 299 [2020-09-21 12:27:42,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:27:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-09-21 12:27:42,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 205. [2020-09-21 12:27:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-21 12:27:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 244 transitions. [2020-09-21 12:27:42,079 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 244 transitions. Word has length 40 [2020-09-21 12:27:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:42,079 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 244 transitions. [2020-09-21 12:27:42,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:27:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 244 transitions. [2020-09-21 12:27:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:27:42,080 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:42,080 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:42,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-21 12:27:42,083 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:42,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:42,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1659756179, now seen corresponding path program 1 times [2020-09-21 12:27:42,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:42,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149750744] [2020-09-21 12:27:42,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:42,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:42,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:42,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:42,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:27:42,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:27:42,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-21 12:27:42,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:42,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:27:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-21 12:27:42,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:27:42,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:27:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:27:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:27:42,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:27:42,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:27:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:27:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:27:42,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:27:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:27:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:27:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:27:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:27:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:27:42,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149750744] [2020-09-21 12:27:42,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:27:42,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:27:42,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248913390] [2020-09-21 12:27:42,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:27:42,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:27:42,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:27:42,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:42,283 INFO L87 Difference]: Start difference. First operand 205 states and 244 transitions. Second operand 4 states. [2020-09-21 12:27:42,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:27:42,437 INFO L93 Difference]: Finished difference Result 324 states and 390 transitions. [2020-09-21 12:27:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:27:42,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-09-21 12:27:42,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:27:42,439 INFO L225 Difference]: With dead ends: 324 [2020-09-21 12:27:42,439 INFO L226 Difference]: Without dead ends: 211 [2020-09-21 12:27:42,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:27:42,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-21 12:27:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191. [2020-09-21 12:27:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-21 12:27:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 223 transitions. [2020-09-21 12:27:42,454 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 223 transitions. Word has length 40 [2020-09-21 12:27:42,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:27:42,455 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 223 transitions. [2020-09-21 12:27:42,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:27:42,455 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 223 transitions. [2020-09-21 12:27:42,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:27:42,456 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:27:42,456 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:27:42,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-21 12:27:42,456 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:27:42,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:27:42,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1717014481, now seen corresponding path program 1 times [2020-09-21 12:27:42,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:27:42,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161042029] [2020-09-21 12:27:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:27:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:27:42,478 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:27:42,478 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:27:42,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-21 12:27:42,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:27:42 BoogieIcfgContainer [2020-09-21 12:27:42,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:27:42,519 INFO L168 Benchmark]: Toolchain (without parser) took 24850.51 ms. Allocated memory was 138.9 MB in the beginning and 459.8 MB in the end (delta: 320.9 MB). Free memory was 99.3 MB in the beginning and 138.7 MB in the end (delta: -39.4 MB). Peak memory consumption was 281.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:42,520 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 12:27:42,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.13 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 98.7 MB in the beginning and 168.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:42,522 INFO L168 Benchmark]: Boogie Preprocessor took 113.15 ms. Allocated memory is still 201.9 MB. Free memory was 168.2 MB in the beginning and 164.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:42,522 INFO L168 Benchmark]: RCFGBuilder took 872.69 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 108.9 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:42,528 INFO L168 Benchmark]: TraceAbstraction took 23150.62 ms. Allocated memory was 201.9 MB in the beginning and 459.8 MB in the end (delta: 257.9 MB). Free memory was 108.3 MB in the beginning and 138.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 227.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:27:42,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.13 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 98.7 MB in the beginning and 168.2 MB in the end (delta: -69.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.15 ms. Allocated memory is still 201.9 MB. Free memory was 168.2 MB in the beginning and 164.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 872.69 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 108.9 MB in the end (delta: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23150.62 ms. Allocated memory was 201.9 MB in the beginning and 459.8 MB in the end (delta: 257.9 MB). Free memory was 108.3 MB in the beginning and 138.7 MB in the end (delta: -30.5 MB). Peak memory consumption was 227.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 89 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.0s, OverallIterations: 24, TraceHistogramMax: 2, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1772 SDtfs, 1789 SDslu, 3111 SDs, 0 SdLazy, 3758 SolverSat, 199 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred in iteration=22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 739 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.0s InterpolantComputationTime, 705 NumberOfCodeBlocks, 705 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 642 ConstructedInterpolants, 0 QuantifiedInterpolants, 181527 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 16/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...