/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:32:23,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:32:23,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:32:23,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:32:23,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:32:23,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:32:23,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:32:23,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:32:23,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:32:23,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:32:23,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:32:23,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:32:23,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:32:23,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:32:23,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:32:23,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:32:23,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:32:23,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:32:23,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:32:23,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:32:23,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:32:23,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:32:23,144 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:32:23,145 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:32:23,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:32:23,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:32:23,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:32:23,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:32:23,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:32:23,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:32:23,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:32:23,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:32:23,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:32:23,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:32:23,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:32:23,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:32:23,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:32:23,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:32:23,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:32:23,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:32:23,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:32:23,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 05:32:23,231 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:32:23,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:32:23,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:32:23,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:32:23,233 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:32:23,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:32:23,234 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:32:23,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:32:23,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:32:23,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:32:23,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:32:23,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:32:23,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:32:23,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:32:23,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:32:23,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:32:23,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:32:23,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:32:23,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:32:23,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:32:23,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:32:23,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:23,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:32:23,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:32:23,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:32:23,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:32:23,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:32:23,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:32:23,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:32:23,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:32:23,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:32:23,773 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:32:23,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:32:23,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:32:23,780 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:32:23,782 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 05:32:23,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d98950bc3/c0ca5e0c9ee1438f995b7dd6d0f071d9/FLAGdeb793a2b [2020-09-25 05:32:24,528 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:32:24,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 05:32:24,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d98950bc3/c0ca5e0c9ee1438f995b7dd6d0f071d9/FLAGdeb793a2b [2020-09-25 05:32:24,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d98950bc3/c0ca5e0c9ee1438f995b7dd6d0f071d9 [2020-09-25 05:32:24,798 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:32:24,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:32:24,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:24,805 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:32:24,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:32:24,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:24" (1/1) ... [2020-09-25 05:32:24,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f0c700e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:24, skipping insertion in model container [2020-09-25 05:32:24,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:32:24" (1/1) ... [2020-09-25 05:32:24,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:32:24,895 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:32:25,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:25,493 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:32:25,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:32:25,638 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:32:25,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25 WrapperNode [2020-09-25 05:32:25,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:32:25,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:32:25,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:32:25,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:32:25,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... [2020-09-25 05:32:25,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... [2020-09-25 05:32:25,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... [2020-09-25 05:32:25,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... [2020-09-25 05:32:25,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... [2020-09-25 05:32:25,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... [2020-09-25 05:32:25,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... [2020-09-25 05:32:25,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:32:25,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:32:25,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:32:25,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:32:25,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:32:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:32:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:32:25,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:32:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 05:32:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 05:32:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 05:32:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 05:32:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 05:32:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 05:32:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 05:32:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 05:32:25,799 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 05:32:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 05:32:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 05:32:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 05:32:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 05:32:25,800 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 05:32:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 05:32:25,801 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 05:32:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 05:32:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 05:32:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 05:32:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 05:32:25,802 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 05:32:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 05:32:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 05:32:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 05:32:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 05:32:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 05:32:25,803 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 05:32:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 05:32:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 05:32:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 05:32:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 05:32:25,804 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 05:32:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 05:32:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 05:32:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 05:32:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 05:32:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 05:32:25,805 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 05:32:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 05:32:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 05:32:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 05:32:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 05:32:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 05:32:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 05:32:25,806 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 05:32:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 05:32:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 05:32:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 05:32:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 05:32:25,807 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 05:32:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 05:32:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 05:32:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 05:32:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 05:32:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 05:32:25,808 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 05:32:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 05:32:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 05:32:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 05:32:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 05:32:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 05:32:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 05:32:25,809 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 05:32:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:32:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 05:32:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 05:32:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 05:32:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 05:32:25,810 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 05:32:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 05:32:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 05:32:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 05:32:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 05:32:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 05:32:25,811 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 05:32:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 05:32:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 05:32:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 05:32:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 05:32:25,812 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 05:32:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 05:32:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 05:32:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 05:32:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 05:32:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 05:32:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 05:32:25,813 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 05:32:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 05:32:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 05:32:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 05:32:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 05:32:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 05:32:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 05:32:25,814 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 05:32:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 05:32:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 05:32:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 05:32:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 05:32:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 05:32:25,815 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 05:32:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 05:32:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 05:32:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 05:32:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:32:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:32:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:32:25,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 05:32:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 05:32:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 05:32:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 05:32:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 05:32:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 05:32:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:32:25,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:32:26,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:32:26,505 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-25 05:32:26,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:26 BoogieIcfgContainer [2020-09-25 05:32:26,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:32:26,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:32:26,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:32:26,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:32:26,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:32:24" (1/3) ... [2020-09-25 05:32:26,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4068121c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:26, skipping insertion in model container [2020-09-25 05:32:26,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:32:25" (2/3) ... [2020-09-25 05:32:26,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4068121c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:32:26, skipping insertion in model container [2020-09-25 05:32:26,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:32:26" (3/3) ... [2020-09-25 05:32:26,522 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-25 05:32:26,536 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:32:26,547 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-25 05:32:26,571 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-25 05:32:26,607 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:32:26,607 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:32:26,608 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:32:26,608 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:32:26,608 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:32:26,608 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:32:26,608 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:32:26,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:32:26,637 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 05:32:26,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 05:32:26,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:26,647 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] [2020-09-25 05:32:26,648 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-25 05:32:26,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:26,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684884976] [2020-09-25 05:32:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:27,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:27,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:27,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 05:32:27,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:27,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 750 [2020-09-25 05:32:27,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:27,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 05:32:27,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:27,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:32:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:27,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:32:27,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:27,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:27,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684884976] [2020-09-25 05:32:27,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:27,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 05:32:27,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026246998] [2020-09-25 05:32:27,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 05:32:27,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:27,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 05:32:27,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:32:27,754 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 05:32:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:28,050 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2020-09-25 05:32:28,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 05:32:28,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 05:32:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:28,068 INFO L225 Difference]: With dead ends: 228 [2020-09-25 05:32:28,068 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 05:32:28,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 05:32:28,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 05:32:28,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-25 05:32:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 05:32:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-09-25 05:32:28,138 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 23 [2020-09-25 05:32:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:28,138 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-09-25 05:32:28,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 05:32:28,139 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-09-25 05:32:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 05:32:28,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:28,140 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] [2020-09-25 05:32:28,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:32:28,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:28,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:28,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1887154194, now seen corresponding path program 1 times [2020-09-25 05:32:28,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:28,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167157901] [2020-09-25 05:32:28,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:28,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:28,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:28,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 05:32:28,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-25 05:32:28,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:28,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:32:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:28,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 05:32:28,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:28,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:28,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:28,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:28,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:28,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:28,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 05:32:28,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:28,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:28,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:28,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:28,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:28,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167157901] [2020-09-25 05:32:28,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:28,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:32:28,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445188313] [2020-09-25 05:32:28,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:32:28,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:28,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:32:28,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:32:28,600 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 8 states. [2020-09-25 05:32:29,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:29,021 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-09-25 05:32:29,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:29,022 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-25 05:32:29,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:29,024 INFO L225 Difference]: With dead ends: 121 [2020-09-25 05:32:29,025 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 05:32:29,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:32:29,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 05:32:29,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-25 05:32:29,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 05:32:29,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 05:32:29,038 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 25 [2020-09-25 05:32:29,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:29,038 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 05:32:29,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:32:29,039 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 05:32:29,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 05:32:29,040 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:29,040 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] [2020-09-25 05:32:29,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:32:29,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:29,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-25 05:32:29,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:29,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64916325] [2020-09-25 05:32:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:29,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:29,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:29,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 05:32:29,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:29,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 05:32:29,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:29,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:32:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:32:29,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:29,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:29,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:29,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:32:29,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:29,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:29,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64916325] [2020-09-25 05:32:29,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:29,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:29,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137535658] [2020-09-25 05:32:29,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:29,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:29,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:29,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:29,328 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-25 05:32:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:29,700 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-25 05:32:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:32:29,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 05:32:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:29,704 INFO L225 Difference]: With dead ends: 146 [2020-09-25 05:32:29,705 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 05:32:29,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:32:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 05:32:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-25 05:32:29,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 05:32:29,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 05:32:29,744 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-25 05:32:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:29,745 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 05:32:29,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 05:32:29,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 05:32:29,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:29,750 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:29,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:32:29,751 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:29,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-25 05:32:29,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:29,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874916213] [2020-09-25 05:32:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:29,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:29,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:30,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:30,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:32:30,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:30,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 832 [2020-09-25 05:32:30,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:30,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 05:32:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 05:32:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:30,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:30,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:30,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:30,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:30,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:30,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 05:32:30,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:30,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:30,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:30,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:30,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874916213] [2020-09-25 05:32:30,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:30,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:30,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014534060] [2020-09-25 05:32:30,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:30,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:30,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:30,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:30,795 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-25 05:32:31,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:31,042 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-25 05:32:31,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:32:31,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 05:32:31,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:31,044 INFO L225 Difference]: With dead ends: 162 [2020-09-25 05:32:31,044 INFO L226 Difference]: Without dead ends: 140 [2020-09-25 05:32:31,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:32:31,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-25 05:32:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2020-09-25 05:32:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 05:32:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-09-25 05:32:31,054 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 38 [2020-09-25 05:32:31,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:31,054 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-09-25 05:32:31,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-09-25 05:32:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 05:32:31,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:31,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:31,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:32:31,059 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:31,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-25 05:32:31,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:31,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728322903] [2020-09-25 05:32:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:31,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:31,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:31,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 05:32:31,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:31,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 05:32:31,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:31,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:32:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 05:32:31,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 05:32:31,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:31,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:31,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:31,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:31,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:31,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:31,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:31,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:31,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:31,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:31,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728322903] [2020-09-25 05:32:31,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:31,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:32:31,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257413170] [2020-09-25 05:32:31,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:32:31,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:31,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:32:31,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:31,394 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 5 states. [2020-09-25 05:32:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:31,589 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-09-25 05:32:31,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:32:31,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-25 05:32:31,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:31,591 INFO L225 Difference]: With dead ends: 117 [2020-09-25 05:32:31,591 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 05:32:31,592 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 [2020-09-25 05:32:31,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 05:32:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-09-25 05:32:31,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 05:32:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-09-25 05:32:31,601 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 38 [2020-09-25 05:32:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:31,601 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-09-25 05:32:31,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:32:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-09-25 05:32:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 05:32:31,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:31,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:31,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:32:31,603 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:31,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:31,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-25 05:32:31,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:31,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498401352] [2020-09-25 05:32:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:31,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:31,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:31,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 05:32:31,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:31,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 05:32:31,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:31,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:32:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 05:32:31,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 05:32:31,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:31,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:31,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:31,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:31,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:31,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 05:32:31,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:31,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:31,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:31,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498401352] [2020-09-25 05:32:31,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:31,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:32:31,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314375746] [2020-09-25 05:32:31,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:32:31,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:31,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:32:31,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:32:31,971 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 5 states. [2020-09-25 05:32:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:32,178 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-25 05:32:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:32:32,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-25 05:32:32,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:32,180 INFO L225 Difference]: With dead ends: 112 [2020-09-25 05:32:32,180 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 05:32:32,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 05:32:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 05:32:32,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 05:32:32,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 05:32:32,188 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 42 [2020-09-25 05:32:32,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:32,188 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 05:32:32,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:32:32,189 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 05:32:32,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 05:32:32,190 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:32,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:32,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 05:32:32,190 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:32,191 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-25 05:32:32,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:32,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857123719] [2020-09-25 05:32:32,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:32,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:32,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:34,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:34,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 05:32:34,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:32:34,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-09-25 05:32:34,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:34,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 05:32:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 05:32:34,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:34,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:34,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:34,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:34,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:34,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:34,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:34,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:34,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:34,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:34,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:34,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:34,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857123719] [2020-09-25 05:32:34,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:34,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 05:32:34,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419759673] [2020-09-25 05:32:34,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 05:32:34,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:34,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 05:32:34,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-09-25 05:32:34,233 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 13 states. [2020-09-25 05:32:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:35,044 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2020-09-25 05:32:35,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:32:35,045 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 05:32:35,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:35,046 INFO L225 Difference]: With dead ends: 156 [2020-09-25 05:32:35,046 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 05:32:35,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-09-25 05:32:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 05:32:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 132. [2020-09-25 05:32:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 05:32:35,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 138 transitions. [2020-09-25 05:32:35,070 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 138 transitions. Word has length 44 [2020-09-25 05:32:35,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:35,070 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 138 transitions. [2020-09-25 05:32:35,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 05:32:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 138 transitions. [2020-09-25 05:32:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 05:32:35,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:35,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:35,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 05:32:35,073 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:35,074 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-25 05:32:35,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:35,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551948849] [2020-09-25 05:32:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:35,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:35,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:37,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:38,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:39,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:40,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 05:32:40,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:32:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 05:32:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:40,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:40,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 05:32:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 05:32:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 05:32:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:40,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:40,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:40,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:40,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:40,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:32:40,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:40,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:40,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:40,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:40,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:40,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:40,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551948849] [2020-09-25 05:32:40,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:40,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:32:40,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517016728] [2020-09-25 05:32:40,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:32:40,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:32:40,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:32:40,274 INFO L87 Difference]: Start difference. First operand 132 states and 138 transitions. Second operand 7 states. [2020-09-25 05:32:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:40,635 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-25 05:32:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:32:40,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-09-25 05:32:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:40,636 INFO L225 Difference]: With dead ends: 162 [2020-09-25 05:32:40,637 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 05:32:40,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 05:32:40,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 05:32:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2020-09-25 05:32:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 05:32:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2020-09-25 05:32:40,644 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 45 [2020-09-25 05:32:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:40,645 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2020-09-25 05:32:40,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:32:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2020-09-25 05:32:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 05:32:40,646 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:40,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:40,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 05:32:40,647 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:40,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:40,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-25 05:32:40,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:40,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440860273] [2020-09-25 05:32:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:40,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:40,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:41,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:44,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:44,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 05:32:44,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 05:32:44,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4237 [2020-09-25 05:32:44,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:44,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:44,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:32:44,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 05:32:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 05:32:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:45,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:45,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:45,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:45,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:45,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:45,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:45,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:45,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:45,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:45,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:45,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440860273] [2020-09-25 05:32:45,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:45,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 05:32:45,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55228910] [2020-09-25 05:32:45,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 05:32:45,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:45,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 05:32:45,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:32:45,246 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand 15 states. [2020-09-25 05:32:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:46,150 INFO L93 Difference]: Finished difference Result 133 states and 138 transitions. [2020-09-25 05:32:46,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 05:32:46,151 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-09-25 05:32:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:46,152 INFO L225 Difference]: With dead ends: 133 [2020-09-25 05:32:46,152 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 05:32:46,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2020-09-25 05:32:46,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 05:32:46,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 92. [2020-09-25 05:32:46,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 05:32:46,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 05:32:46,157 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-09-25 05:32:46,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:46,158 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 05:32:46,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 05:32:46,158 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 05:32:46,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 05:32:46,159 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:46,159 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:46,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 05:32:46,160 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-25 05:32:46,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:46,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328549860] [2020-09-25 05:32:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:46,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:47,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 05:32:47,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:47,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-09-25 05:32:47,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:47,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 05:32:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:32:47,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 05:32:47,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:47,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:47,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:47,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:47,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:47,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:47,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:47,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 05:32:47,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:47,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:47,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328549860] [2020-09-25 05:32:47,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:47,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 05:32:47,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990083945] [2020-09-25 05:32:47,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 05:32:47,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:47,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 05:32:47,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:32:47,735 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 17 states. [2020-09-25 05:32:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:49,289 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2020-09-25 05:32:49,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 05:32:49,290 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-25 05:32:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:49,291 INFO L225 Difference]: With dead ends: 181 [2020-09-25 05:32:49,291 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 05:32:49,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-25 05:32:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 05:32:49,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2020-09-25 05:32:49,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 05:32:49,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-09-25 05:32:49,309 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 55 [2020-09-25 05:32:49,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:49,309 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-09-25 05:32:49,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 05:32:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-09-25 05:32:49,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 05:32:49,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:49,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:49,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 05:32:49,318 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:49,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:49,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1380187476, now seen corresponding path program 1 times [2020-09-25 05:32:49,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:49,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923775179] [2020-09-25 05:32:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:49,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:50,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:51,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:54,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:54,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 05:32:54,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 05:32:54,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:32:54,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:54,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:32:54,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 05:32:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:32:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:54,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:54,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:54,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:54,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:54,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:32:54,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:54,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:54,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:54,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 05:32:54,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 05:32:54,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923775179] [2020-09-25 05:32:54,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:32:54,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 05:32:54,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160979091] [2020-09-25 05:32:54,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:32:54,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:54,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:32:54,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:32:54,518 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 6 states. [2020-09-25 05:32:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:32:54,807 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2020-09-25 05:32:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 05:32:54,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-09-25 05:32:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:32:54,809 INFO L225 Difference]: With dead ends: 153 [2020-09-25 05:32:54,809 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 05:32:54,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:32:54,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 05:32:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-09-25 05:32:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 05:32:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-25 05:32:54,817 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 64 [2020-09-25 05:32:54,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:32:54,817 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-25 05:32:54,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:32:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-25 05:32:54,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 05:32:54,821 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:32:54,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:32:54,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 05:32:54,821 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:32:54,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:32:54,822 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-25 05:32:54,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:32:54,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311597294] [2020-09-25 05:32:54,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:32:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:57,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:57,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 05:32:57,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:57,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2332 [2020-09-25 05:32:57,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:57,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 05:32:57,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:32:57,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 05:32:57,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:32:58,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:32:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:32:58,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:32:58,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:32:58,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:32:58,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:32:58,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 05:32:58,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:32:58,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:32:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:32:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:32:58,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:32:58,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:32:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:32:58,067 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311597294] [2020-09-25 05:32:58,067 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:32:58,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 05:32:58,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546067689] [2020-09-25 05:32:58,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 05:32:58,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:32:58,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 05:32:58,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-25 05:32:58,069 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-25 05:32:59,345 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-25 05:33:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:00,242 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-25 05:33:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 05:33:00,243 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-25 05:33:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:00,245 INFO L225 Difference]: With dead ends: 205 [2020-09-25 05:33:00,245 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 05:33:00,247 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 05:33:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 05:33:00,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-25 05:33:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 05:33:00,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-25 05:33:00,254 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-25 05:33:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:00,254 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-25 05:33:00,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 05:33:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-25 05:33:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 05:33:00,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:00,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:00,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 05:33:00,256 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:00,256 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-25 05:33:00,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:00,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953144027] [2020-09-25 05:33:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:00,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:03,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:05,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:05,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 05:33:05,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:33:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:05,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:33:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 05:33:05,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:33:05,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 05:33:05,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:33:05,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:33:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:33:05,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:33:05,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:33:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:33:05,684 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:33:05,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953144027] [2020-09-25 05:33:05,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:33:05,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 05:33:05,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76664054] [2020-09-25 05:33:05,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 05:33:05,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:33:05,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 05:33:05,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 05:33:05,686 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-25 05:33:06,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:33:06,898 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-25 05:33:06,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 05:33:06,899 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 05:33:06,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:33:06,901 INFO L225 Difference]: With dead ends: 229 [2020-09-25 05:33:06,902 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 05:33:06,903 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 05:33:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 05:33:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-25 05:33:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 05:33:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-25 05:33:06,910 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-25 05:33:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:33:06,911 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-25 05:33:06,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 05:33:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-25 05:33:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 05:33:06,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:33:06,912 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:33:06,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 05:33:06,912 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:33:06,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:33:06,913 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-25 05:33:06,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:33:06,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482410450] [2020-09-25 05:33:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:33:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:33:06,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:07,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:08,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:09,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:33:11,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking...