/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 12:20:17,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:20:17,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:20:17,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:20:17,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:20:17,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:20:17,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:20:17,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:20:17,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:20:17,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:20:17,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:20:17,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:20:17,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:20:17,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:20:17,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:20:17,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:20:17,588 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:20:17,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:20:17,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:20:17,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:20:17,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:20:17,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:20:17,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:20:17,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:20:17,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:20:17,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:20:17,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:20:17,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:20:17,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:20:17,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:20:17,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:20:17,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:20:17,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:20:17,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:20:17,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:20:17,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:20:17,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:20:17,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:20:17,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:20:17,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:20:17,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:20:17,628 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 12:20:17,675 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:20:17,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:20:17,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:20:17,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:20:17,679 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:20:17,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:20:17,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:20:17,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:20:17,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:20:17,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:20:17,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:20:17,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:20:17,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:20:17,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:20:17,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:20:17,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:20:17,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:20:17,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:20:17,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:20:17,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:20:17,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:20:17,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:20:17,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:20:17,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:20:17,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:20:17,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:20:17,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:20:17,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:20:17,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:20:17,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:20:18,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:20:18,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:20:18,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:20:18,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:20:18,186 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:20:18,187 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 12:20:18,261 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6c62fa3/cf73c9085f564f3aac6b868470d3e4f1/FLAGcab10a933 [2020-09-25 12:20:18,895 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:20:18,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 12:20:18,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6c62fa3/cf73c9085f564f3aac6b868470d3e4f1/FLAGcab10a933 [2020-09-25 12:20:19,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c6c62fa3/cf73c9085f564f3aac6b868470d3e4f1 [2020-09-25 12:20:19,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:20:19,144 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:20:19,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:19,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:20:19,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:20:19,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecced43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19, skipping insertion in model container [2020-09-25 12:20:19,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:20:19,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:20:19,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:19,770 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:20:19,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:20:19,877 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:20:19,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19 WrapperNode [2020-09-25 12:20:19,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:20:19,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:20:19,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:20:19,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:20:19,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (1/1) ... [2020-09-25 12:20:19,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:20:19,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:20:19,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:20:19,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:20:19,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (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 12:20:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:20:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:20:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:20:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 12:20:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 12:20:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 12:20:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 12:20:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 12:20:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 12:20:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 12:20:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 12:20:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 12:20:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 12:20:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 12:20:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 12:20:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 12:20:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 12:20:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 12:20:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 12:20:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 12:20:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 12:20:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 12:20:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 12:20:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 12:20:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 12:20:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 12:20:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 12:20:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 12:20:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 12:20:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 12:20:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 12:20:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 12:20:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 12:20:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 12:20:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 12:20:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 12:20:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 12:20:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 12:20:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 12:20:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 12:20:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 12:20:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 12:20:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 12:20:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 12:20:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 12:20:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 12:20:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 12:20:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 12:20:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 12:20:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 12:20:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 12:20:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 12:20:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 12:20:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 12:20:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 12:20:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 12:20:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 12:20:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 12:20:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 12:20:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 12:20:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 12:20:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 12:20:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 12:20:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 12:20:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 12:20:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 12:20:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:20:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 12:20:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 12:20:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 12:20:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 12:20:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 12:20:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 12:20:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 12:20:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 12:20:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 12:20:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 12:20:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 12:20:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 12:20:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 12:20:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 12:20:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 12:20:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 12:20:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 12:20:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 12:20:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 12:20:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 12:20:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 12:20:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 12:20:20,057 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 12:20:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 12:20:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 12:20:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 12:20:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 12:20:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 12:20:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 12:20:20,058 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 12:20:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 12:20:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 12:20:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 12:20:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 12:20:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 12:20:20,059 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 12:20:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 12:20:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 12:20:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 12:20:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:20:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:20:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:20:20,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 12:20:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:20:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:20:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:20:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:20:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:20:20,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:20:20,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:20:20,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:20:20,728 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-25 12:20:20,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:20 BoogieIcfgContainer [2020-09-25 12:20:20,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:20:20,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:20:20,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:20:20,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:20:20,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:20:19" (1/3) ... [2020-09-25 12:20:20,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b77fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:20, skipping insertion in model container [2020-09-25 12:20:20,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:20:19" (2/3) ... [2020-09-25 12:20:20,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b77fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:20:20, skipping insertion in model container [2020-09-25 12:20:20,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:20:20" (3/3) ... [2020-09-25 12:20:20,747 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-25 12:20:20,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:20:20,773 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-25 12:20:20,798 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-25 12:20:20,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:20:20,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:20:20,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:20:20,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:20:20,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:20:20,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:20:20,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:20:20,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:20:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 12:20:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 12:20:20,878 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:20,879 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 12:20:20,880 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 12:20:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:20,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-25 12:20:20,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:20,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699433699] [2020-09-25 12:20:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:21,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:21,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:21,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:21,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:20:21,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-09-25 12:20:21,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:21,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:21,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:20:21,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:21,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:20:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:20:22,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:22,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:22,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:22,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:22,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:22,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:20:22,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:22,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:22,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:22,059 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 12:20:22,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699433699] [2020-09-25 12:20:22,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:22,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:20:22,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352612846] [2020-09-25 12:20:22,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:20:22,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:22,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:20:22,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:20:22,096 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 8 states. [2020-09-25 12:20:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:22,668 INFO L93 Difference]: Finished difference Result 281 states and 350 transitions. [2020-09-25 12:20:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:20:22,670 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-09-25 12:20:22,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:22,685 INFO L225 Difference]: With dead ends: 281 [2020-09-25 12:20:22,686 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 12:20:22,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:20:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 12:20:22,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-25 12:20:22,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 12:20:22,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 12:20:22,756 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 23 [2020-09-25 12:20:22,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:22,757 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 12:20:22,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:20:22,757 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 12:20:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 12:20:22,758 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:22,759 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 12:20:22,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:20:22,760 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 12:20:22,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:22,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-25 12:20:22,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:22,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270586754] [2020-09-25 12:20:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:23,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:23,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:20:23,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:23,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 12:20:23,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:23,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:23,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 12:20:23,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:20:23,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:23,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:23,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:23,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:23,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:20:23,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:23,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:23,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:23,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:23,147 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 12:20:23,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270586754] [2020-09-25 12:20:23,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:23,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:23,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14492354] [2020-09-25 12:20:23,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:23,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:23,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:23,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:23,153 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-25 12:20:23,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:23,453 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-25 12:20:23,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:20:23,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 12:20:23,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:23,455 INFO L225 Difference]: With dead ends: 146 [2020-09-25 12:20:23,456 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 12:20:23,457 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 12:20:23,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 12:20:23,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-25 12:20:23,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 12:20:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 12:20:23,470 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-25 12:20:23,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:23,470 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 12:20:23,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:23,471 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 12:20:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:20:23,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:23,472 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 12:20:23,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:20:23,473 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 12:20:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:23,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-25 12:20:23,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:23,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213693654] [2020-09-25 12:20:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:23,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:24,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 12:20:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-09-25 12:20:24,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:24,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:20:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:20:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:24,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:24,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:24,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:24,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:20:24,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:24,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:24,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:24,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:20:24,540 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 12:20:24,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213693654] [2020-09-25 12:20:24,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:24,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:24,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470626919] [2020-09-25 12:20:24,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:24,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:24,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:24,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:24,547 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-25 12:20:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:24,938 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-25 12:20:24,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:20:24,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 12:20:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:24,941 INFO L225 Difference]: With dead ends: 162 [2020-09-25 12:20:24,944 INFO L226 Difference]: Without dead ends: 140 [2020-09-25 12:20:24,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:20:24,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-25 12:20:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2020-09-25 12:20:24,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 12:20:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-09-25 12:20:24,968 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 38 [2020-09-25 12:20:24,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:24,969 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-09-25 12:20:24,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-09-25 12:20:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 12:20:24,972 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:24,973 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 12:20:24,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:20:24,973 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 12:20:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-25 12:20:24,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:24,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033000429] [2020-09-25 12:20:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:25,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:25,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:25,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 12:20:25,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:25,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-09-25 12:20:25,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:25,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:20:25,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 12:20:25,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 12:20:25,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:25,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:25,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:25,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:25,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:25,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:25,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:20:25,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:25,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:25,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:25,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:25,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:25,307 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 12:20:25,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2033000429] [2020-09-25 12:20:25,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:25,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:20:25,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523509092] [2020-09-25 12:20:25,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:20:25,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:25,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:20:25,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:20:25,311 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 5 states. [2020-09-25 12:20:25,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:25,566 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-09-25 12:20:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:20:25,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-25 12:20:25,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:25,569 INFO L225 Difference]: With dead ends: 117 [2020-09-25 12:20:25,569 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 12:20:25,570 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 12:20:25,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 12:20:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-09-25 12:20:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 12:20:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-09-25 12:20:25,599 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 38 [2020-09-25 12:20:25,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:25,602 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-09-25 12:20:25,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:20:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-09-25 12:20:25,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 12:20:25,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:25,604 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 12:20:25,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:20:25,605 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 12:20:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:25,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-25 12:20:25,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:25,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098984428] [2020-09-25 12:20:25,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:25,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:25,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:20:25,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:25,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-25 12:20:25,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:25,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:20:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 12:20:25,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:20:25,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:26,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:26,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:26,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:26,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:26,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:26,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:26,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:20:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:26,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:26,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:26,056 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 12:20:26,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098984428] [2020-09-25 12:20:26,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:26,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:20:26,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937323288] [2020-09-25 12:20:26,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:20:26,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:26,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:20:26,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:20:26,059 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 5 states. [2020-09-25 12:20:26,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:26,268 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-25 12:20:26,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:20:26,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-25 12:20:26,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:26,270 INFO L225 Difference]: With dead ends: 112 [2020-09-25 12:20:26,270 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 12:20:26,271 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 12:20:26,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 12:20:26,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 12:20:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 12:20:26,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 12:20:26,279 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 42 [2020-09-25 12:20:26,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:26,279 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 12:20:26,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:20:26,280 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 12:20:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 12:20:26,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:26,282 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 12:20:26,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:20:26,282 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 12:20:26,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:26,283 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-25 12:20:26,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:26,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194777839] [2020-09-25 12:20:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:28,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:28,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 12:20:28,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:20:28,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1865 [2020-09-25 12:20:28,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:28,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:20:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:28,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:20:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:28,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:28,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:28,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:28,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:28,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:28,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:28,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:28,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:28,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:28,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:28,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:28,372 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 12:20:28,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194777839] [2020-09-25 12:20:28,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:28,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 12:20:28,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126470070] [2020-09-25 12:20:28,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:20:28,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:28,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:20:28,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:20:28,377 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 10 states. [2020-09-25 12:20:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:29,144 INFO L93 Difference]: Finished difference Result 154 states and 160 transitions. [2020-09-25 12:20:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:20:29,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-09-25 12:20:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:29,146 INFO L225 Difference]: With dead ends: 154 [2020-09-25 12:20:29,147 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 12:20:29,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:20:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 12:20:29,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 115. [2020-09-25 12:20:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-25 12:20:29,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2020-09-25 12:20:29,155 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 44 [2020-09-25 12:20:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:29,156 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2020-09-25 12:20:29,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:20:29,156 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2020-09-25 12:20:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 12:20:29,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:29,158 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 12:20:29,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:20:29,158 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 12:20:29,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:29,159 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-25 12:20:29,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:29,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794950030] [2020-09-25 12:20:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:31,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:34,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:34,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 12:20:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:20:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:20:34,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:34,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:34,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 12:20:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:20:34,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:20:34,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:34,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:34,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:20:34,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:34,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:34,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:34,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:20:34,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794950030] [2020-09-25 12:20:34,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:34,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:20:34,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138464269] [2020-09-25 12:20:34,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:20:34,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:34,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:20:34,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:20:34,710 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 15 states. [2020-09-25 12:20:35,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:35,846 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2020-09-25 12:20:35,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 12:20:35,847 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-09-25 12:20:35,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:35,849 INFO L225 Difference]: With dead ends: 174 [2020-09-25 12:20:35,850 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 12:20:35,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:20:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 12:20:35,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2020-09-25 12:20:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 12:20:35,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 126 transitions. [2020-09-25 12:20:35,862 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 126 transitions. Word has length 45 [2020-09-25 12:20:35,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:35,863 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 126 transitions. [2020-09-25 12:20:35,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:20:35,863 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 126 transitions. [2020-09-25 12:20:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 12:20:35,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:35,867 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 12:20:35,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:20:35,868 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 12:20:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:35,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times [2020-09-25 12:20:35,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:35,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881923906] [2020-09-25 12:20:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:35,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:36,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 12:20:36,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:36,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-09-25 12:20:36,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:36,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:20:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 12:20:36,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:20:36,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:36,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:36,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:36,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:36,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:36,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:36,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:36,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:36,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:36,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:20:36,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881923906] [2020-09-25 12:20:36,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:36,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:20:36,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553512416] [2020-09-25 12:20:36,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:20:36,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:36,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:20:36,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:20:36,297 INFO L87 Difference]: Start difference. First operand 122 states and 126 transitions. Second operand 7 states. [2020-09-25 12:20:36,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:36,640 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2020-09-25 12:20:36,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:20:36,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 12:20:36,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:36,641 INFO L225 Difference]: With dead ends: 147 [2020-09-25 12:20:36,642 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 12:20:36,643 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 12:20:36,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 12:20:36,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2020-09-25 12:20:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-25 12:20:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 106 transitions. [2020-09-25 12:20:36,649 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 106 transitions. Word has length 52 [2020-09-25 12:20:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:36,650 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 106 transitions. [2020-09-25 12:20:36,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:20:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 106 transitions. [2020-09-25 12:20:36,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 12:20:36,652 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:36,652 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 12:20:36,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:20:36,653 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 12:20:36,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:36,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-25 12:20:36,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:36,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023503380] [2020-09-25 12:20:36,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:36,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:37,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:40,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:40,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:20:40,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:20:40,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4283 [2020-09-25 12:20:40,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:40,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:20:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:20:40,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:20:40,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:41,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:41,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:41,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:41,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:41,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:20:41,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:41,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:41,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:41,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:41,146 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 12:20:41,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023503380] [2020-09-25 12:20:41,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:41,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 12:20:41,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091907763] [2020-09-25 12:20:41,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:20:41,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:41,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:20:41,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:20:41,153 INFO L87 Difference]: Start difference. First operand 103 states and 106 transitions. Second operand 10 states. [2020-09-25 12:20:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:41,655 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2020-09-25 12:20:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:20:41,656 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-09-25 12:20:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:41,657 INFO L225 Difference]: With dead ends: 179 [2020-09-25 12:20:41,657 INFO L226 Difference]: Without dead ends: 177 [2020-09-25 12:20:41,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:20:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-25 12:20:41,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 92. [2020-09-25 12:20:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 12:20:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 12:20:41,663 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-09-25 12:20:41,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:41,663 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 12:20:41,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:20:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 12:20:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 12:20:41,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:41,665 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 12:20:41,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:20:41,665 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 12:20:41,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:41,665 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-25 12:20:41,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:41,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195775388] [2020-09-25 12:20:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:42,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:42,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 12:20:42,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-09-25 12:20:42,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:42,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:20:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:20:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 12:20:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:43,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:43,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:43,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:20:43,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:43,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:43,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:43,142 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 12:20:43,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195775388] [2020-09-25 12:20:43,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:43,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:20:43,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135490800] [2020-09-25 12:20:43,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:20:43,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:43,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:20:43,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:20:43,144 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 17 states. [2020-09-25 12:20:44,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:44,711 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2020-09-25 12:20:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:20:44,711 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-25 12:20:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:44,713 INFO L225 Difference]: With dead ends: 181 [2020-09-25 12:20:44,713 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 12:20:44,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-25 12:20:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 12:20:44,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2020-09-25 12:20:44,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 12:20:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-09-25 12:20:44,721 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 55 [2020-09-25 12:20:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:44,722 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-09-25 12:20:44,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:20:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-09-25 12:20:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 12:20:44,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:44,723 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 12:20:44,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:20:44,724 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 12:20:44,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:44,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1380187476, now seen corresponding path program 1 times [2020-09-25 12:20:44,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:44,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105690973] [2020-09-25 12:20:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:44,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:44,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:46,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:20:49,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:20:49,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 12:20:49,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:20:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:20:49,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:20:49,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:49,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:49,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:49,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:49,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:49,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:20:49,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:49,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:49,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:49,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:49,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:49,889 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 12:20:49,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105690973] [2020-09-25 12:20:49,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:20:49,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 12:20:49,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102361128] [2020-09-25 12:20:49,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:20:49,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:20:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:20:49,892 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 6 states. [2020-09-25 12:20:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:50,149 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2020-09-25 12:20:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:20:50,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-09-25 12:20:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:50,152 INFO L225 Difference]: With dead ends: 153 [2020-09-25 12:20:50,152 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 12:20:50,153 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 12:20:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 12:20:50,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-09-25 12:20:50,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 12:20:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-25 12:20:50,160 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 64 [2020-09-25 12:20:50,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:50,160 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-25 12:20:50,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:20:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-25 12:20:50,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:20:50,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:50,162 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 12:20:50,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:20:50,162 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 12:20:50,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:50,163 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-25 12:20:50,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:50,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308980476] [2020-09-25 12:20:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:52,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:52,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2253 [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:20:52,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:20:53,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:20:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:53,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:20:53,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:20:53,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:20:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:20:53,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:20:53,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:20:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:20:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:20:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:20:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:20:53,213 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 12:20:53,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308980476] [2020-09-25 12:20:53,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:20:53,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 12:20:53,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530094625] [2020-09-25 12:20:53,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 12:20:53,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:20:53,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 12:20:53,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:20:53,216 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-25 12:20:54,638 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-25 12:20:54,781 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-09-25 12:20:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:20:55,605 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-25 12:20:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 12:20:55,606 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-25 12:20:55,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:20:55,608 INFO L225 Difference]: With dead ends: 205 [2020-09-25 12:20:55,608 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 12:20:55,610 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 12:20:55,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 12:20:55,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-25 12:20:55,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 12:20:55,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-25 12:20:55,618 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-25 12:20:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:20:55,619 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-25 12:20:55,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 12:20:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-25 12:20:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:20:55,620 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:20:55,620 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 12:20:55,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:20:55,621 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 12:20:55,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:20:55,621 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-25 12:20:55,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:20:55,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705150994] [2020-09-25 12:20:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:20:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:20:55,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:58,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:20:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:00,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:00,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:21:00,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:21:00,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-09-25 12:21:00,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:00,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:21:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 12:21:00,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:21:00,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:01,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:21:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:01,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:21:01,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:21:01,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:21:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:21:01,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:21:01,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:21:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:21:01,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:21:01,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:21:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:21:01,187 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 12:21:01,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705150994] [2020-09-25 12:21:01,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:21:01,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:21:01,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078973611] [2020-09-25 12:21:01,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:21:01,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:21:01,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:21:01,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:21:01,193 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-25 12:21:02,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:21:02,372 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-25 12:21:02,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 12:21:02,379 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 12:21:02,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:21:02,381 INFO L225 Difference]: With dead ends: 229 [2020-09-25 12:21:02,381 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 12:21:02,382 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 12:21:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 12:21:02,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-25 12:21:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 12:21:02,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-25 12:21:02,390 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-25 12:21:02,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:21:02,390 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-25 12:21:02,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:21:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-25 12:21:02,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 12:21:02,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:21:02,391 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 12:21:02,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:21:02,392 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 12:21:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:21:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-25 12:21:02,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:21:02,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677125464] [2020-09-25 12:21:02,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:21:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:21:02,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:02,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:21:03,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking...